diff options
| author | Eduardo Chappa <chappa@washington.edu> | 2021-11-20 12:54:47 -0700 |
|---|---|---|
| committer | Eduardo Chappa <chappa@washington.edu> | 2021-11-20 12:54:47 -0700 |
| commit | 626eccdd8d0a325842d736596348e9d1d81ca105 (patch) | |
| tree | 2eb4695b74cf88e15b030e30a751ada1017a0528 /imap | |
| parent | a9e8d3c24b2bb6d30649d4d3c66f554ae38024bb (diff) | |
| download | alpine-626eccdd8d0a325842d736596348e9d1d81ca105.tar.xz | |
* Addition of support for SHA1 to SHA512 needed for future additions to
Alpine. The code is taken and adapted from code in RFC 4634.
Diffstat (limited to 'imap')
| -rw-r--r-- | imap/src/c-client/c-client.h | 1 | ||||
| -rw-r--r-- | imap/src/c-client/hash.h | 6 | ||||
| -rw-r--r-- | imap/src/c-client/hmac.c | 228 | ||||
| -rw-r--r-- | imap/src/c-client/sha-private.h | 28 | ||||
| -rw-r--r-- | imap/src/c-client/sha.c | 65 | ||||
| -rw-r--r-- | imap/src/c-client/sha.h | 263 | ||||
| -rw-r--r-- | imap/src/c-client/sha1.c | 427 | ||||
| -rw-r--r-- | imap/src/c-client/sha224-256.c | 590 | ||||
| -rw-r--r-- | imap/src/c-client/sha384-512.c | 1033 | ||||
| -rw-r--r-- | imap/src/c-client/usha.c | 255 | ||||
| -rw-r--r-- | imap/src/osdep/nt/makefile.nt | 8 | ||||
| -rw-r--r-- | imap/src/osdep/nt/makefile.ntk | 8 | ||||
| -rw-r--r-- | imap/src/osdep/nt/makefile.w2k | 8 | ||||
| -rw-r--r-- | imap/src/osdep/unix/Makefile | 3 |
14 files changed, 2913 insertions, 10 deletions
diff --git a/imap/src/c-client/c-client.h b/imap/src/c-client/c-client.h index b190db86..5eb5c71d 100644 --- a/imap/src/c-client/c-client.h +++ b/imap/src/c-client/c-client.h @@ -47,6 +47,7 @@ extern "C" { #include "utf8.h" /* Unicode and charset routines */ #include "utf8aux.h" /* Unicode auxiliary routines */ #include "misc.h" /* miscellaneous utility routines */ +#include "hash.h" /* SHA hash and MD5 support */ #ifdef __cplusplus /* undo the C++ mischief */ #undef private diff --git a/imap/src/c-client/hash.h b/imap/src/c-client/hash.h new file mode 100644 index 00000000..4e796429 --- /dev/null +++ b/imap/src/c-client/hash.h @@ -0,0 +1,6 @@ +#ifndef HASH_H_INCLUDED +#define HASH_H_INCLUDED + +char *hash_from_sizedtext(char *, char *, size_t); + +#endif /* HASH_H_INCLUDED */ diff --git a/imap/src/c-client/hmac.c b/imap/src/c-client/hmac.c new file mode 100644 index 00000000..431026db --- /dev/null +++ b/imap/src/c-client/hmac.c @@ -0,0 +1,228 @@ +/**************************** hmac.c ****************************/ +/******************** See RFC 4634 for details ******************/ +/* + * Description: + * This file implements the HMAC algorithm (Keyed-Hashing for + * Message Authentication, RFC2104), expressed in terms of the + * various SHA algorithms. + */ + +#include "sha.h" + +/* + * hmac + * + * Description: + * This function will compute an HMAC message digest. + * + * Parameters: + * whichSha: [in] + * One of SHA1, SHA224, SHA256, SHA384, SHA512 + * key: [in] + * The secret shared key. + * key_len: [in] + * The length of the secret shared key. + * message_array: [in] + * An array of characters representing the message. + * length: [in] + * The length of the message in message_array + * digest: [out] + * Where the digest is returned. + * NOTE: The length of the digest is determined by + * the value of whichSha. + * + * Returns: + * sha Error Code. + * + */ +int hmac(SHAversion whichSha, const unsigned char *text, int text_len, + const unsigned char *key, int key_len, + uint8_t digest[USHAMaxHashSize]) +{ + HMACContext ctx; + return hmacReset(&ctx, whichSha, key, key_len) || + hmacInput(&ctx, text, text_len) || + hmacResult(&ctx, digest); +} + +/* + * hmacReset + * + * Description: + * This function will initialize the hmacContext in preparation + * for computing a new HMAC message digest. + * + * Parameters: + * context: [in/out] + * The context to reset. + * whichSha: [in] + * One of SHA1, SHA224, SHA256, SHA384, SHA512 + * key: [in] + * The secret shared key. + * key_len: [in] + * The length of the secret shared key. + * + * Returns: + * sha Error Code. + * + */ +int hmacReset(HMACContext *ctx, enum SHAversion whichSha, + const unsigned char *key, int key_len) +{ + int i, blocksize, hashsize; + + /* inner padding - key XORd with ipad */ + unsigned char k_ipad[USHA_Max_Message_Block_Size]; + + /* temporary buffer when keylen > blocksize */ + unsigned char tempkey[USHAMaxHashSize]; + + if (!ctx) return shaNull; + + blocksize = ctx->blockSize = USHABlockSize(whichSha); + hashsize = ctx->hashSize = USHAHashSize(whichSha); + + ctx->whichSha = whichSha; + + /* + * If key is longer than the hash blocksize, + * reset it to key = HASH(key). + */ + if (key_len > blocksize) { + USHAContext tctx; + int err = USHAReset(&tctx, whichSha) || + USHAInput(&tctx, key, key_len) || + USHAResult(&tctx, tempkey); + if (err != shaSuccess) return err; + + key = tempkey; + key_len = hashsize; + } + + /* + * The HMAC transform looks like: + * + * SHA(K XOR opad, SHA(K XOR ipad, text)) + * + * where K is an n byte key. + * ipad is the byte 0x36 repeated blocksize times + * opad is the byte 0x5c repeated blocksize times + * and text is the data being protected. + */ + + /* store key into the pads, XOR'd with ipad and opad values */ + for (i = 0; i < key_len; i++) { + k_ipad[i] = key[i] ^ 0x36; + ctx->k_opad[i] = key[i] ^ 0x5c; + } + /* remaining pad bytes are '\0' XOR'd with ipad and opad values */ + for ( ; i < blocksize; i++) { + k_ipad[i] = 0x36; + ctx->k_opad[i] = 0x5c; + } + + /* perform inner hash */ + /* init context for 1st pass */ + return USHAReset(&ctx->shaContext, whichSha) || + /* and start with inner pad */ + USHAInput(&ctx->shaContext, k_ipad, blocksize); +} + +/* + * hmacInput + * + * Description: + * This function accepts an array of octets as the next portion + * of the message. + * + * Parameters: + * context: [in/out] + * The HMAC context to update + * message_array: [in] + * An array of characters representing the next portion of + * the message. + * length: [in] + * The length of the message in message_array + * + * Returns: + * sha Error Code. + * + */ +int hmacInput(HMACContext *ctx, const unsigned char *text, + int text_len) +{ + if (!ctx) return shaNull; + /* then text of datagram */ + return USHAInput(&ctx->shaContext, text, text_len); +} + +/* + * HMACFinalBits + * + * Description: + * This function will add in any final bits of the message. + * + * Parameters: + * context: [in/out] + * The HMAC context to update + * message_bits: [in] + * The final bits of the message, in the upper portion of the + * byte. (Use 0b###00000 instead of 0b00000### to input the + * three bits ###.) + * length: [in] + * The number of bits in message_bits, between 1 and 7. + * + * Returns: + * sha Error Code. + */ +int hmacFinalBits(HMACContext *ctx, + const uint8_t bits, + unsigned int bitcount) +{ + if (!ctx) return shaNull; + /* then final bits of datagram */ + return USHAFinalBits(&ctx->shaContext, bits, bitcount); +} + +/* + * HMACResult + * + * Description: + * This function will return the N-byte message digest into the + * Message_Digest array provided by the caller. + * NOTE: The first octet of hash is stored in the 0th element, + * the last octet of hash in the Nth element. + * + * Parameters: + * context: [in/out] + * The context to use to calculate the HMAC hash. + * digest: [out] + * Where the digest is returned. + * NOTE 2: The length of the hash is determined by the value of + * whichSha that was passed to hmacReset(). + * + * Returns: + * sha Error Code. + * + */ +int hmacResult(HMACContext *ctx, uint8_t *digest) +{ + if (!ctx) return shaNull; + + /* finish up 1st pass */ + /* (Use digest here as a temporary buffer.) */ + return USHAResult(&ctx->shaContext, digest) || + + /* perform outer SHA */ + /* init context for 2nd pass */ + USHAReset(&ctx->shaContext, ctx->whichSha) || + + /* start with outer pad */ + USHAInput(&ctx->shaContext, ctx->k_opad, ctx->blockSize) || + + /* then results of 1st hash */ + USHAInput(&ctx->shaContext, digest, ctx->hashSize) || + + /* finish up 2nd pass */ + USHAResult(&ctx->shaContext, digest); +} diff --git a/imap/src/c-client/sha-private.h b/imap/src/c-client/sha-private.h new file mode 100644 index 00000000..5304bd0b --- /dev/null +++ b/imap/src/c-client/sha-private.h @@ -0,0 +1,28 @@ +/*************************** sha-private.h ***************************/ +/********************** See RFC 4634 for details *********************/ +#ifndef _SHA_PRIVATE__H +#define _SHA_PRIVATE__H +/* + * These definitions are defined in FIPS-180-2, section 4.1. + * Ch() and Maj() are defined identically in sections 4.1.1, + * 4.1.2 and 4.1.3. + * + * The definitions used in FIPS-180-2 are as follows: + */ + +#ifndef USE_MODIFIED_MACROS +#define SHA_Ch(x,y,z) (((x) & (y)) ^ ((~(x)) & (z))) +#define SHA_Maj(x,y,z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z))) + +#else /* USE_MODIFIED_MACROS */ +/* + * The following definitions are equivalent and potentially faster. + */ + +#define SHA_Ch(x, y, z) (((x) & ((y) ^ (z))) ^ (z)) +#define SHA_Maj(x, y, z) (((x) & ((y) | (z))) | ((y) & (z))) +#endif /* USE_MODIFIED_MACROS */ + +#define SHA_Parity(x, y, z) ((x) ^ (y) ^ (z)) + +#endif /* _SHA_PRIVATE__H */ diff --git a/imap/src/c-client/sha.c b/imap/src/c-client/sha.c new file mode 100644 index 00000000..3c4b43c3 --- /dev/null +++ b/imap/src/c-client/sha.c @@ -0,0 +1,65 @@ +/* + * Copyright 2021 Eduardo Chappa + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + */ +/* This algorithm is taken from the code in RFC 4634 */ + +#include "c-client.h" +#include "sha.h" +#include "hmac.c" +#include "sha1.c" +#include "usha.c" +#include "sha224-256.c" +#include "sha384-512.c" + +struct hash { + char *name; + SHAversion whichSha; + int hashsize; +} hashes[] = { + {"SHA1", CCSHA1, SHA1HashSize}, + {"SHA224", CCSHA224, SHA224HashSize}, + {"SHA256", CCSHA256, SHA256HashSize}, + {"SHA384", CCSHA384, SHA384HashSize}, + {"SHA512", CCSHA512, SHA512HashSize}, + {NIL, CCSHA512, SHA512HashSize} +}; +static const char hexdigits[] = "0123456789abcdef"; + +char *hash_from_sizedtext(char *hash, char *text, size_t len) +{ + char *rv = NIL; + USHAContext sha; + HMACContext hmac; + uint8_t Message_Digest[USHAMaxHashSize]; + int i, hashno; + + if(!hash || !text) return NIL; + + for(hashno = 0; hashes[hashno].name != NIL; hashno++) + if(!compare_cstring(hashes[hashno].name, hash)) + break; + + if(hashno >= 0 && hashno <= USHAMaxHashSize && hashes[hashno].name){ + memset(&sha, '\343', sizeof(USHAContext)); + memset(&hmac, '\343', sizeof(HMACContext)); + if(USHAReset(&sha, hashes[hashno].whichSha) == shaSuccess + && USHAInput(&sha, (const uint8_t *) text, len) == shaSuccess){ + if(USHAResult(&sha, (uint8_t *) Message_Digest) == shaSuccess){ + rv = fs_get(2*hashes[hashno].hashsize + 1); + for (i = 0; i < hashes[hashno].hashsize ; ++i) { + rv[2*i] = hexdigits[(Message_Digest[i] >> 4) & 0xF]; + rv[2*i+1] = hexdigits[Message_Digest[i] & 0xF]; + } + rv[2*i] = '\0'; + } + } + } + return rv; +} diff --git a/imap/src/c-client/sha.h b/imap/src/c-client/sha.h new file mode 100644 index 00000000..ffd4b7cf --- /dev/null +++ b/imap/src/c-client/sha.h @@ -0,0 +1,263 @@ +/**************************** sha.h ****************************/ +/******************* See RFC 4634 for details ******************/ +#ifndef _SHA_H_ +#define _SHA_H_ + +/* + * Description: + * This file implements the Secure Hash Signature Standard + * algorithms as defined in the National Institute of Standards + * and Technology Federal Information Processing Standards + * Publication (FIPS PUB) 180-1 published on April 17, 1995, 180-2 + * published on August 1, 2002, and the FIPS PUB 180-2 Change + * Notice published on February 28, 2004. + * + * A combined document showing all algorithms is available at + * http://csrc.nist.gov/publications/fips/ + * fips180-2/fips180-2withchangenotice.pdf + * + * The five hashes are defined in these sizes: + * SHA-1 20 byte / 160 bit + * SHA-224 28 byte / 224 bit + * SHA-256 32 byte / 256 bit + * SHA-384 48 byte / 384 bit + * SHA-512 64 byte / 512 bit + */ + +#include <stdint.h> +/* + * If you do not have the ISO standard stdint.h header file, then you + * must typedef the following: + * name meaning + * uint64_t unsigned 64 bit integer + * uint32_t unsigned 32 bit integer + * uint8_t unsigned 8 bit integer (i.e., unsigned char) + * int_least16_t integer of >= 16 bits + * + */ + +#ifndef _SHA_enum_ +#define _SHA_enum_ +/* + * All SHA functions return one of these values. + */ +enum { + shaSuccess = 0, + shaNull, /* Null pointer parameter */ + shaInputTooLong, /* input data too long */ + shaStateError, /* called Input after FinalBits or Result */ + shaBadParam /* passed a bad parameter */ +}; +#endif /* _SHA_enum_ */ + +/* + * These constants hold size information for each of the SHA + * hashing operations + */ +enum { + SHA1_Message_Block_Size = 64, SHA224_Message_Block_Size = 64, + SHA256_Message_Block_Size = 64, SHA384_Message_Block_Size = 128, + SHA512_Message_Block_Size = 128, + USHA_Max_Message_Block_Size = SHA512_Message_Block_Size, + + SHA1HashSize = 20, SHA224HashSize = 28, SHA256HashSize = 32, + SHA384HashSize = 48, SHA512HashSize = 64, + USHAMaxHashSize = SHA512HashSize, + + SHA1HashSizeBits = 160, SHA224HashSizeBits = 224, + SHA256HashSizeBits = 256, SHA384HashSizeBits = 384, + SHA512HashSizeBits = 512, USHAMaxHashSizeBits = SHA512HashSizeBits +}; + +/* + * These constants are used in the USHA (unified sha) functions. + * CC = c-client + */ +typedef enum SHAversion { + CCSHA1, CCSHA224, CCSHA256, CCSHA384, CCSHA512 +} SHAversion; + +/* + * This structure will hold context information for the SHA-1 + * hashing operation. + */ +typedef struct SHA1Context { + uint32_t Intermediate_Hash[SHA1HashSize/4]; /* Message Digest */ + + uint32_t Length_Low; /* Message length in bits */ + uint32_t Length_High; /* Message length in bits */ + + int_least16_t Message_Block_Index; /* Message_Block array index */ + /* 512-bit message blocks */ + uint8_t Message_Block[SHA1_Message_Block_Size]; + + int Computed; /* Is the digest computed? */ + int Corrupted; /* Is the digest corrupted? */ +} SHA1Context; + +/* + * This structure will hold context information for the SHA-256 + * hashing operation. + */ +typedef struct SHA256Context { + uint32_t Intermediate_Hash[SHA256HashSize/4]; /* Message Digest */ + + uint32_t Length_Low; /* Message length in bits */ + uint32_t Length_High; /* Message length in bits */ + + int_least16_t Message_Block_Index; /* Message_Block array index */ + /* 512-bit message blocks */ + uint8_t Message_Block[SHA256_Message_Block_Size]; + + int Computed; /* Is the digest computed? */ + int Corrupted; /* Is the digest corrupted? */ +} SHA256Context; + +/* + * This structure will hold context information for the SHA-512 + * hashing operation. + */ +typedef struct SHA512Context { +#ifdef USE_32BIT_ONLY + uint32_t Intermediate_Hash[SHA512HashSize/4]; /* Message Digest */ + uint32_t Length[4]; /* Message length in bits */ +#else /* !USE_32BIT_ONLY */ + uint64_t Intermediate_Hash[SHA512HashSize/8]; /* Message Digest */ + uint64_t Length_Low, Length_High; /* Message length in bits */ +#endif /* USE_32BIT_ONLY */ + + int_least16_t Message_Block_Index; /* Message_Block array index */ + /* 1024-bit message blocks */ + uint8_t Message_Block[SHA512_Message_Block_Size]; + + int Computed; /* Is the digest computed?*/ + int Corrupted; /* Is the digest corrupted? */ +} SHA512Context; + +/* + * This structure will hold context information for the SHA-224 + * hashing operation. It uses the SHA-256 structure for computation. + */ +typedef struct SHA256Context SHA224Context; + +/* + * This structure will hold context information for the SHA-384 + * hashing operation. It uses the SHA-512 structure for computation. + */ +typedef struct SHA512Context SHA384Context; + +/* + * This structure holds context information for all SHA + * hashing operations. + */ +typedef struct USHAContext { + int whichSha; /* which SHA is being used */ + union { + SHA1Context sha1Context; + SHA224Context sha224Context; SHA256Context sha256Context; + SHA384Context sha384Context; SHA512Context sha512Context; + } ctx; +} USHAContext; + +/* + * This structure will hold context information for the HMAC + * keyed hashing operation. + */ +typedef struct HMACContext { + int whichSha; /* which SHA is being used */ + int hashSize; /* hash size of SHA being used */ + int blockSize; /* block size of SHA being used */ + USHAContext shaContext; /* SHA context */ + unsigned char k_opad[USHA_Max_Message_Block_Size]; + /* outer padding - key XORd with opad */ +} HMACContext; + +/* + * Function Prototypes + */ + +/* SHA-1 */ +extern int SHA1Reset(SHA1Context *); +extern int SHA1Input(SHA1Context *, const uint8_t *bytes, + unsigned int bytecount); +extern int SHA1FinalBits(SHA1Context *, const uint8_t bits, + unsigned int bitcount); +extern int SHA1Result(SHA1Context *, + uint8_t Message_Digest[SHA1HashSize]); + +/* SHA-224 */ +extern int SHA224Reset(SHA224Context *); +extern int SHA224Input(SHA224Context *, const uint8_t *bytes, + unsigned int bytecount); +extern int SHA224FinalBits(SHA224Context *, const uint8_t bits, + unsigned int bitcount); +extern int SHA224Result(SHA224Context *, + uint8_t Message_Digest[SHA224HashSize]); + +/* SHA-256 */ +extern int SHA256Reset(SHA256Context *); +extern int SHA256Input(SHA256Context *, const uint8_t *bytes, + unsigned int bytecount); +extern int SHA256FinalBits(SHA256Context *, const uint8_t bits, + unsigned int bitcount); +extern int SHA256Result(SHA256Context *, + uint8_t Message_Digest[SHA256HashSize]); + +/* SHA-384 */ +extern int SHA384Reset(SHA384Context *); +extern int SHA384Input(SHA384Context *, const uint8_t *bytes, + unsigned int bytecount); +extern int SHA384FinalBits(SHA384Context *, const uint8_t bits, + unsigned int bitcount); +extern int SHA384Result(SHA384Context *, + uint8_t Message_Digest[SHA384HashSize]); + +/* SHA-512 */ +extern int SHA512Reset(SHA512Context *); +extern int SHA512Input(SHA512Context *, const uint8_t *bytes, + unsigned int bytecount); +extern int SHA512FinalBits(SHA512Context *, const uint8_t bits, + unsigned int bitcount); +extern int SHA512Result(SHA512Context *, + uint8_t Message_Digest[SHA512HashSize]); + +/* Unified SHA functions, chosen by whichSha */ +extern int USHAReset(USHAContext *, SHAversion whichSha); +extern int USHAInput(USHAContext *, + const uint8_t *bytes, unsigned int bytecount); +extern int USHAFinalBits(USHAContext *, + const uint8_t bits, unsigned int bitcount); +extern int USHAResult(USHAContext *, + uint8_t Message_Digest[USHAMaxHashSize]); +extern int USHABlockSize(enum SHAversion whichSha); +extern int USHAHashSize(enum SHAversion whichSha); +extern int USHAHashSizeBits(enum SHAversion whichSha); + +/* + * HMAC Keyed-Hashing for Message Authentication, RFC2104, + * for all SHAs. + * This interface allows a fixed-length text input to be used. + */ +extern int hmac(SHAversion whichSha, /* which SHA algorithm to use */ + const unsigned char *text, /* pointer to data stream */ + int text_len, /* length of data stream */ + const unsigned char *key, /* pointer to authentication key */ + int key_len, /* length of authentication key */ + uint8_t digest[USHAMaxHashSize]); /* caller digest to fill in */ + +/* + * HMAC Keyed-Hashing for Message Authentication, RFC2104, + * for all SHAs. + * This interface allows any length of text input to be used. + */ +extern int hmacReset(HMACContext *ctx, enum SHAversion whichSha, + const unsigned char *key, int key_len); +extern int hmacInput(HMACContext *ctx, const unsigned char *text, + int text_len); + +extern int hmacFinalBits(HMACContext *ctx, const uint8_t bits, + unsigned int bitcount); +extern int hmacResult(HMACContext *ctx, + uint8_t digest[USHAMaxHashSize]); + +#endif /* _SHA_H_ */ diff --git a/imap/src/c-client/sha1.c b/imap/src/c-client/sha1.c new file mode 100644 index 00000000..6ecfceff --- /dev/null +++ b/imap/src/c-client/sha1.c @@ -0,0 +1,427 @@ +/**************************** sha1.c ****************************/ +/******************** See RFC 4634 for details ******************/ +/* + * Description: + * This file implements the Secure Hash Signature Standard + * algorithms as defined in the National Institute of Standards + * and Technology Federal Information Processing Standards + * Publication (FIPS PUB) 180-1 published on April 17, 1995, 180-2 + * published on August 1, 2002, and the FIPS PUB 180-2 Change + * Notice published on February 28, 2004. + * + * A combined document showing all algorithms is available at + * http://csrc.nist.gov/publications/fips/ + * fips180-2/fips180-2withchangenotice.pdf + * + * The SHA-1 algorithm produces a 160-bit message digest for a + * given data stream. It should take about 2**n steps to find a + * message with the same digest as a given message and + * 2**(n/2) to find any two messages with the same digest, + * when n is the digest size in bits. Therefore, this + * algorithm can serve as a means of providing a + * "fingerprint" for a message. + * + * Portability Issues: + * SHA-1 is defined in terms of 32-bit "words". This code + * uses <stdint.h> (included via "sha.h") to define 32 and 8 + * bit unsigned integer types. If your C compiler does not + * support 32 bit unsigned integers, this code is not + * appropriate. + * + * Caveats: + * SHA-1 is designed to work with messages less than 2^64 bits + * long. This implementation uses SHA1Input() to hash the bits + * that are a multiple of the size of an 8-bit character, and then + * uses SHA1FinalBits() to hash the final few bits of the input. + */ + +#include "sha.h" +#include "sha-private.h" + +/* + * Define the SHA1 circular left shift macro + */ +#define SHA1_ROTL(bits,word) \ + (((word) << (bits)) | ((word) >> (32-(bits)))) + +/* + * add "length" to the length + */ +static uint32_t addTemp; +#define SHA1AddLength(context, length) \ + (addTemp = (context)->Length_Low, \ + (context)->Corrupted = \ + (((context)->Length_Low += (length)) < addTemp) && \ + (++(context)->Length_High == 0) ? 1 : 0) + +/* Local Function Prototypes */ +static void SHA1Finalize(SHA1Context *context, uint8_t Pad_Byte); +static void SHA1PadMessage(SHA1Context *, uint8_t Pad_Byte); +static void SHA1ProcessMessageBlock(SHA1Context *); + +/* + * SHA1Reset + * + * Description: + * This function will initialize the SHA1Context in preparation + * for computing a new SHA1 message digest. + * + * Parameters: + * context: [in/out] + * The context to reset. + * + * Returns: + * sha Error Code. + * + */ +int SHA1Reset(SHA1Context *context) +{ + if (!context) + return shaNull; + + context->Length_Low = 0; + context->Length_High = 0; + context->Message_Block_Index = 0; + /* Initial Hash Values: FIPS-180-2 section 5.3.1 */ + context->Intermediate_Hash[0] = 0x67452301; + context->Intermediate_Hash[1] = 0xEFCDAB89; + context->Intermediate_Hash[2] = 0x98BADCFE; + context->Intermediate_Hash[3] = 0x10325476; + context->Intermediate_Hash[4] = 0xC3D2E1F0; + + context->Computed = 0; + context->Corrupted = 0; + + return shaSuccess; +} + +/* + * SHA1Input + * + * Description: + * This function accepts an array of octets as the next portion + * of the message. + * + * Parameters: + * context: [in/out] + * The SHA context to update + * message_array: [in] + * An array of characters representing the next portion of + * the message. + * length: [in] + * The length of the message in message_array + * + * Returns: + * sha Error Code. + * + */ +int SHA1Input(SHA1Context *context, + const uint8_t *message_array, unsigned length) +{ + if (!length) + return shaSuccess; + + if (!context || !message_array) + return shaNull; + + if (context->Computed) { + context->Corrupted = shaStateError; + return shaStateError; + } + + if (context->Corrupted) + return context->Corrupted; + + while (length-- && !context->Corrupted) { + context->Message_Block[context->Message_Block_Index++] = + (*message_array & 0xFF); + + if (!SHA1AddLength(context, 8) && + (context->Message_Block_Index == SHA1_Message_Block_Size)) + SHA1ProcessMessageBlock(context); + + message_array++; + } + + return shaSuccess; +} + +/* + * SHA1FinalBits + * + * Description: + * This function will add in any final bits of the message. + * + * Parameters: + * context: [in/out] + * The SHA context to update + * message_bits: [in] + * The final bits of the message, in the upper portion of the + * byte. (Use 0b###00000 instead of 0b00000### to input the + * three bits ###.) + * length: [in] + * The number of bits in message_bits, between 1 and 7. + * + * Returns: + * sha Error Code. + */ +int SHA1FinalBits(SHA1Context *context, const uint8_t message_bits, + unsigned int length) +{ + uint8_t masks[8] = { + /* 0 0b00000000 */ 0x00, /* 1 0b10000000 */ 0x80, + /* 2 0b11000000 */ 0xC0, /* 3 0b11100000 */ 0xE0, + /* 4 0b11110000 */ 0xF0, /* 5 0b11111000 */ 0xF8, + /* 6 0b11111100 */ 0xFC, /* 7 0b11111110 */ 0xFE + }; + uint8_t markbit[8] = { + /* 0 0b10000000 */ 0x80, /* 1 0b01000000 */ 0x40, + /* 2 0b00100000 */ 0x20, /* 3 0b00010000 */ 0x10, + /* 4 0b00001000 */ 0x08, /* 5 0b00000100 */ 0x04, + /* 6 0b00000010 */ 0x02, /* 7 0b00000001 */ 0x01 + }; + + if (!length) + return shaSuccess; + + if (!context) + return shaNull; + + if (context->Computed || (length >= 8) || (length == 0)) { + context->Corrupted = shaStateError; + return shaStateError; + } + + if (context->Corrupted) + return context->Corrupted; + + SHA1AddLength(context, length); + SHA1Finalize(context, + (uint8_t) ((message_bits & masks[length]) | markbit[length])); + + return shaSuccess; +} + +/* + * SHA1Result + * + * Description: + * This function will return the 160-bit message digest into the + * Message_Digest array provided by the caller. + * NOTE: The first octet of hash is stored in the 0th element, + * the last octet of hash in the 19th element. + * + * Parameters: + * context: [in/out] + * The context to use to calculate the SHA-1 hash. + * Message_Digest: [out] + * Where the digest is returned. + * + * Returns: + * sha Error Code. + * + */ +int SHA1Result(SHA1Context *context, + uint8_t Message_Digest[SHA1HashSize]) +{ + int i; + + if (!context || !Message_Digest) + return shaNull; + + if (context->Corrupted) + return context->Corrupted; + + if (!context->Computed) + SHA1Finalize(context, 0x80); + + for (i = 0; i < SHA1HashSize; ++i) + Message_Digest[i] = (uint8_t) (context->Intermediate_Hash[i>>2] + >> 8 * ( 3 - ( i & 0x03 ) )); + + return shaSuccess; +} + +/* + * SHA1Finalize + * + * Description: + * This helper function finishes off the digest calculations. + * + * Parameters: + * context: [in/out] + * The SHA context to update + * Pad_Byte: [in] + * The last byte to add to the digest before the 0-padding + * and length. This will contain the last bits of the message + * followed by another single bit. If the message was an + * exact multiple of 8-bits long, Pad_Byte will be 0x80. + * + * Returns: + * sha Error Code. + * + */ +static void SHA1Finalize(SHA1Context *context, uint8_t Pad_Byte) +{ + int i; + SHA1PadMessage(context, Pad_Byte); + /* message may be sensitive, clear it out */ + for (i = 0; i < SHA1_Message_Block_Size; ++i) + context->Message_Block[i] = 0; + context->Length_Low = 0; /* and clear length */ + context->Length_High = 0; + context->Computed = 1; +} + +/* + * SHA1PadMessage + * + * Description: + * According to the standard, the message must be padded to an + * even 512 bits. The first padding bit must be a '1'. The last + * 64 bits represent the length of the original message. All bits + * in between should be 0. This helper function will pad the + * message according to those rules by filling the Message_Block + * array accordingly. When it returns, it can be assumed that the + * message digest has been computed. + * + * Parameters: + * context: [in/out] + * The context to pad + * Pad_Byte: [in] + * The last byte to add to the digest before the 0-padding + * and length. This will contain the last bits of the message + * followed by another single bit. If the message was an + * exact multiple of 8-bits long, Pad_Byte will be 0x80. + * + * Returns: + * Nothing. + */ +static void SHA1PadMessage(SHA1Context *context, uint8_t Pad_Byte) +{ + /* + * Check to see if the current message block is too small to hold + * the initial padding bits and length. If so, we will pad the + * block, process it, and then continue padding into a second + * block. + */ + if (context->Message_Block_Index >= (SHA1_Message_Block_Size - 8)) { + context->Message_Block[context->Message_Block_Index++] = Pad_Byte; + while (context->Message_Block_Index < SHA1_Message_Block_Size) + context->Message_Block[context->Message_Block_Index++] = 0; + + SHA1ProcessMessageBlock(context); + } else + context->Message_Block[context->Message_Block_Index++] = Pad_Byte; + + while (context->Message_Block_Index < (SHA1_Message_Block_Size - 8)) + context->Message_Block[context->Message_Block_Index++] = 0; + + /* + * Store the message length as the last 8 octets + */ + context->Message_Block[56] = (uint8_t) (context->Length_High >> 24); + context->Message_Block[57] = (uint8_t) (context->Length_High >> 16); + context->Message_Block[58] = (uint8_t) (context->Length_High >> 8); + context->Message_Block[59] = (uint8_t) (context->Length_High); + context->Message_Block[60] = (uint8_t) (context->Length_Low >> 24); + context->Message_Block[61] = (uint8_t) (context->Length_Low >> 16); + context->Message_Block[62] = (uint8_t) (context->Length_Low >> 8); + context->Message_Block[63] = (uint8_t) (context->Length_Low); + + SHA1ProcessMessageBlock(context); +} + +/* + * SHA1ProcessMessageBlock + * + * Description: + * This helper function will process the next 512 bits of the + * message stored in the Message_Block array. + * + * Parameters: + * None. + * + * Returns: + * Nothing. + * + * Comments: + * Many of the variable names in this code, especially the + * single character names, were used because those were the + * names used in the publication. + */ +static void SHA1ProcessMessageBlock(SHA1Context *context) +{ + /* Constants defined in FIPS-180-2, section 4.2.1 */ + const uint32_t K[4] = { + 0x5A827999, 0x6ED9EBA1, 0x8F1BBCDC, 0xCA62C1D6 + }; + int t; /* Loop counter */ + uint32_t temp; /* Temporary word value */ + uint32_t W[80]; /* Word sequence */ + uint32_t A, B, C, D, E; /* Word buffers */ + + /* + * Initialize the first 16 words in the array W + */ + for (t = 0; t < 16; t++) { + W[t] = ((uint32_t)context->Message_Block[t * 4]) << 24; + W[t] |= ((uint32_t)context->Message_Block[t * 4 + 1]) << 16; + W[t] |= ((uint32_t)context->Message_Block[t * 4 + 2]) << 8; + W[t] |= ((uint32_t)context->Message_Block[t * 4 + 3]); + } + + for (t = 16; t < 80; t++) + W[t] = SHA1_ROTL(1, W[t-3] ^ W[t-8] ^ W[t-14] ^ W[t-16]); + + A = context->Intermediate_Hash[0]; + B = context->Intermediate_Hash[1]; + C = context->Intermediate_Hash[2]; + D = context->Intermediate_Hash[3]; + E = context->Intermediate_Hash[4]; + + for (t = 0; t < 20; t++) { + temp = SHA1_ROTL(5,A) + SHA_Ch(B, C, D) + E + W[t] + K[0]; + E = D; + D = C; + C = SHA1_ROTL(30,B); + B = A; + A = temp; + } + + for (t = 20; t < 40; t++) { + temp = SHA1_ROTL(5,A) + SHA_Parity(B, C, D) + E + W[t] + K[1]; + E = D; + D = C; + C = SHA1_ROTL(30,B); + B = A; + A = temp; + } + + for (t = 40; t < 60; t++) { + temp = SHA1_ROTL(5,A) + SHA_Maj(B, C, D) + E + W[t] + K[2]; + E = D; + D = C; + C = SHA1_ROTL(30,B); + B = A; + A = temp; + } + + for (t = 60; t < 80; t++) { + temp = SHA1_ROTL(5,A) + SHA_Parity(B, C, D) + E + W[t] + K[3]; + E = D; + D = C; + C = SHA1_ROTL(30,B); + B = A; + A = temp; + } + + context->Intermediate_Hash[0] += A; + context->Intermediate_Hash[1] += B; + context->Intermediate_Hash[2] += C; + context->Intermediate_Hash[3] += D; + context->Intermediate_Hash[4] += E; + + context->Message_Block_Index = 0; +} + diff --git a/imap/src/c-client/sha224-256.c b/imap/src/c-client/sha224-256.c new file mode 100644 index 00000000..42afcf10 --- /dev/null +++ b/imap/src/c-client/sha224-256.c @@ -0,0 +1,590 @@ +/*************************** sha224-256.c ***************************/ +/********************* See RFC 4634 for details *********************/ +/* + * Description: + * This file implements the Secure Hash Signature Standard + * algorithms as defined in the National Institute of Standards + * and Technology Federal Information Processing Standards + * Publication (FIPS PUB) 180-1 published on April 17, 1995, 180-2 + * published on August 1, 2002, and the FIPS PUB 180-2 Change + * Notice published on February 28, 2004. + * + * A combined document showing all algorithms is available at + * http://csrc.nist.gov/publications/fips/ + * fips180-2/fips180-2withchangenotice.pdf + * + * The SHA-224 and SHA-256 algorithms produce 224-bit and 256-bit + * message digests for a given data stream. It should take about + * 2**n steps to find a message with the same digest as a given + * message and 2**(n/2) to find any two messages with the same + * digest, when n is the digest size in bits. Therefore, this + * algorithm can serve as a means of providing a + * "fingerprint" for a message. + * + * Portability Issues: + * SHA-224 and SHA-256 are defined in terms of 32-bit "words". + * This code uses <stdint.h> (included via "sha.h") to define 32 + * and 8 bit unsigned integer types. If your C compiler does not + * support 32 bit unsigned integers, this code is not + * appropriate. + * + * Caveats: + * SHA-224 and SHA-256 are designed to work with messages less + * than 2^64 bits long. This implementation uses SHA224/256Input() + * to hash the bits that are a multiple of the size of an 8-bit + * character, and then uses SHA224/256FinalBits() to hash the + * final few bits of the input. + */ + +#include "sha.h" +#include "sha-private.h" + +/* Define the SHA shift, rotate left and rotate right macro */ +#define SHA256_SHR(bits,word) ((word) >> (bits)) +#define SHA256_ROTL(bits,word) \ + (((word) << (bits)) | ((word) >> (32-(bits)))) +#define SHA256_ROTR(bits,word) \ + (((word) >> (bits)) | ((word) << (32-(bits)))) + +/* Define the SHA SIGMA and sigma macros */ +#define SHA256_SIGMA0(word) \ + (SHA256_ROTR( 2,word) ^ SHA256_ROTR(13,word) ^ SHA256_ROTR(22,word)) +#define SHA256_SIGMA1(word) \ + (SHA256_ROTR( 6,word) ^ SHA256_ROTR(11,word) ^ SHA256_ROTR(25,word)) +#define SHA256_sigma0(word) \ + (SHA256_ROTR( 7,word) ^ SHA256_ROTR(18,word) ^ SHA256_SHR( 3,word)) +#define SHA256_sigma1(word) \ + (SHA256_ROTR(17,word) ^ SHA256_ROTR(19,word) ^ SHA256_SHR(10,word)) + +/* + * add "length" to the length + */ +static uint32_t addTemp32; +#define SHA224_256AddLength(context, length) \ + (addTemp32 = (context)->Length_Low, (context)->Corrupted = \ + (((context)->Length_Low += (length)) < addTemp32) && \ + (++(context)->Length_High == 0) ? 1 : 0) + +/* Local Function Prototypes */ +static void SHA224_256Finalize(SHA256Context *context, + uint8_t Pad_Byte); +static void SHA224_256PadMessage(SHA256Context *context, + uint8_t Pad_Byte); +static void SHA224_256ProcessMessageBlock(SHA256Context *context); +static int SHA224_256Reset(SHA256Context *context, uint32_t *H0); +static int SHA224_256ResultN(SHA256Context *context, + uint8_t Message_Digest[], int HashSize); + +/* Initial Hash Values: FIPS-180-2 Change Notice 1 */ +static uint32_t SHA224_H0[SHA256HashSize/4] = { + 0xC1059ED8, 0x367CD507, 0x3070DD17, 0xF70E5939, + 0xFFC00B31, 0x68581511, 0x64F98FA7, 0xBEFA4FA4 +}; + +/* Initial Hash Values: FIPS-180-2 section 5.3.2 */ +static uint32_t SHA256_H0[SHA256HashSize/4] = { + 0x6A09E667, 0xBB67AE85, 0x3C6EF372, 0xA54FF53A, + 0x510E527F, 0x9B05688C, 0x1F83D9AB, 0x5BE0CD19 +}; + +/* + * SHA224Reset + * + * Description: + * This function will initialize the SHA384Context in preparation + * for computing a new SHA224 message digest. + * + * Parameters: + * context: [in/out] + * The context to reset. + * + * Returns: + * sha Error Code. + */ +int SHA224Reset(SHA224Context *context) +{ + return SHA224_256Reset(context, SHA224_H0); +} + +/* + * SHA224Input + * + * Description: + * This function accepts an array of octets as the next portion + * of the message. + * + * Parameters: + * context: [in/out] + * The SHA context to update + * message_array: [in] + * An array of characters representing the next portion of + * the message. + * length: [in] + * The length of the message in message_array + * + * Returns: + * sha Error Code. + * + */ +int SHA224Input(SHA224Context *context, const uint8_t *message_array, + unsigned int length) +{ + return SHA256Input(context, message_array, length); +} + +/* + * SHA224FinalBits + * + * Description: + * This function will add in any final bits of the message. + * + * Parameters: + * context: [in/out] + * The SHA context to update + * message_bits: [in] + * The final bits of the message, in the upper portion of the + * byte. (Use 0b###00000 instead of 0b00000### to input the + * three bits ###.) + * length: [in] + * The number of bits in message_bits, between 1 and 7. + * + * Returns: + * sha Error Code. + */ +int SHA224FinalBits( SHA224Context *context, + const uint8_t message_bits, unsigned int length) +{ + return SHA256FinalBits(context, message_bits, length); +} + +/* + * SHA224Result + * + * Description: + * This function will return the 224-bit message + * digest into the Message_Digest array provided by the caller. + * NOTE: The first octet of hash is stored in the 0th element, + * the last octet of hash in the 28th element. + * + * Parameters: + * context: [in/out] + * The context to use to calculate the SHA hash. + * Message_Digest: [out] + * Where the digest is returned. + * + * Returns: + * sha Error Code. + */ +int SHA224Result(SHA224Context *context, + uint8_t Message_Digest[SHA224HashSize]) +{ + return SHA224_256ResultN(context, Message_Digest, SHA224HashSize); +} + +/* + * SHA256Reset + * + * Description: + * This function will initialize the SHA256Context in preparation + * for computing a new SHA256 message digest. + * + * Parameters: + * context: [in/out] + * The context to reset. + * + * Returns: + * sha Error Code. + */ +int SHA256Reset(SHA256Context *context) +{ + return SHA224_256Reset(context, SHA256_H0); +} + +/* + * SHA256Input + * + * Description: + * This function accepts an array of octets as the next portion + * of the message. + * + * Parameters: + * context: [in/out] + * The SHA context to update + * message_array: [in] + * An array of characters representing the next portion of + * the message. + * length: [in] + * The length of the message in message_array + * + * Returns: + * sha Error Code. + */ +int SHA256Input(SHA256Context *context, const uint8_t *message_array, + unsigned int length) +{ + if (!length) + return shaSuccess; + + if (!context || !message_array) + return shaNull; + + if (context->Computed) { + context->Corrupted = shaStateError; + return shaStateError; + } + + if (context->Corrupted) + return context->Corrupted; + + while (length-- && !context->Corrupted) { + context->Message_Block[context->Message_Block_Index++] = + (*message_array & 0xFF); + + if (!SHA224_256AddLength(context, 8) && + (context->Message_Block_Index == SHA256_Message_Block_Size)) + SHA224_256ProcessMessageBlock(context); + + message_array++; + } + + return shaSuccess; + +} + +/* + * SHA256FinalBits + * + * Description: + * This function will add in any final bits of the message. + * + * Parameters: + * context: [in/out] + * The SHA context to update + * message_bits: [in] + * The final bits of the message, in the upper portion of the + * byte. (Use 0b###00000 instead of 0b00000### to input the + * three bits ###.) + * length: [in] + * The number of bits in message_bits, between 1 and 7. + * + * Returns: + * sha Error Code. + */ +int SHA256FinalBits(SHA256Context *context, + const uint8_t message_bits, unsigned int length) +{ + uint8_t masks[8] = { + /* 0 0b00000000 */ 0x00, /* 1 0b10000000 */ 0x80, + /* 2 0b11000000 */ 0xC0, /* 3 0b11100000 */ 0xE0, + /* 4 0b11110000 */ 0xF0, /* 5 0b11111000 */ 0xF8, + /* 6 0b11111100 */ 0xFC, /* 7 0b11111110 */ 0xFE + }; + uint8_t markbit[8] = { + /* 0 0b10000000 */ 0x80, /* 1 0b01000000 */ 0x40, + /* 2 0b00100000 */ 0x20, /* 3 0b00010000 */ 0x10, + /* 4 0b00001000 */ 0x08, /* 5 0b00000100 */ 0x04, + /* 6 0b00000010 */ 0x02, /* 7 0b00000001 */ 0x01 + }; + + if (!length) + return shaSuccess; + + if (!context) + return shaNull; + + if ((context->Computed) || (length >= 8) || (length == 0)) { + context->Corrupted = shaStateError; + return shaStateError; + } + + if (context->Corrupted) + return context->Corrupted; + + SHA224_256AddLength(context, length); + SHA224_256Finalize(context, (uint8_t) + ((message_bits & masks[length]) | markbit[length])); + + return shaSuccess; +} + +/* + * SHA256Result + * + * Description: + * This function will return the 256-bit message + * digest into the Message_Digest array provided by the caller. + * NOTE: The first octet of hash is stored in the 0th element, + * the last octet of hash in the 32nd element. + * + * Parameters: + * context: [in/out] + * The context to use to calculate the SHA hash. + * Message_Digest: [out] + * Where the digest is returned. + * + * Returns: + * sha Error Code. + */ +int SHA256Result(SHA256Context *context, uint8_t Message_Digest[]) +{ + return SHA224_256ResultN(context, Message_Digest, SHA256HashSize); +} + +/* + * SHA224_256Finalize + * + * Description: + * This helper function finishes off the digest calculations. + * + * Parameters: + * context: [in/out] + * The SHA context to update + * Pad_Byte: [in] + * The last byte to add to the digest before the 0-padding + * and length. This will contain the last bits of the message + * followed by another single bit. If the message was an + * exact multiple of 8-bits long, Pad_Byte will be 0x80. + * + * Returns: + * sha Error Code. + */ +static void SHA224_256Finalize(SHA256Context *context, + uint8_t Pad_Byte) +{ + int i; + SHA224_256PadMessage(context, Pad_Byte); + /* message may be sensitive, so clear it out */ + for (i = 0; i < SHA256_Message_Block_Size; ++i) + context->Message_Block[i] = 0; + context->Length_Low = 0; /* and clear length */ + context->Length_High = 0; + context->Computed = 1; +} + +/* + * SHA224_256PadMessage + * + * Description: + * According to the standard, the message must be padded to an + * even 512 bits. The first padding bit must be a '1'. The + * last 64 bits represent the length of the original message. + * All bits in between should be 0. This helper function will pad + * the message according to those rules by filling the + * Message_Block array accordingly. When it returns, it can be + * assumed that the message digest has been computed. + * + * Parameters: + * context: [in/out] + * The context to pad + * Pad_Byte: [in] + * The last byte to add to the digest before the 0-padding + * and length. This will contain the last bits of the message + * followed by another single bit. If the message was an + * exact multiple of 8-bits long, Pad_Byte will be 0x80. + * + * Returns: + * Nothing. + */ +static void SHA224_256PadMessage(SHA256Context *context, + uint8_t Pad_Byte) +{ + /* + * Check to see if the current message block is too small to hold + * the initial padding bits and length. If so, we will pad the + * block, process it, and then continue padding into a second + * block. + */ + if (context->Message_Block_Index >= (SHA256_Message_Block_Size-8)) { + context->Message_Block[context->Message_Block_Index++] = Pad_Byte; + while (context->Message_Block_Index < SHA256_Message_Block_Size) + context->Message_Block[context->Message_Block_Index++] = 0; + SHA224_256ProcessMessageBlock(context); + } else + context->Message_Block[context->Message_Block_Index++] = Pad_Byte; + + while (context->Message_Block_Index < (SHA256_Message_Block_Size-8)) + context->Message_Block[context->Message_Block_Index++] = 0; + + /* + * Store the message length as the last 8 octets + */ + context->Message_Block[56] = (uint8_t)(context->Length_High >> 24); + context->Message_Block[57] = (uint8_t)(context->Length_High >> 16); + context->Message_Block[58] = (uint8_t)(context->Length_High >> 8); + context->Message_Block[59] = (uint8_t)(context->Length_High); + context->Message_Block[60] = (uint8_t)(context->Length_Low >> 24); + context->Message_Block[61] = (uint8_t)(context->Length_Low >> 16); + context->Message_Block[62] = (uint8_t)(context->Length_Low >> 8); + context->Message_Block[63] = (uint8_t)(context->Length_Low); + + SHA224_256ProcessMessageBlock(context); +} + +/* + * SHA224_256ProcessMessageBlock + * + * Description: + * This function will process the next 512 bits of the message + * stored in the Message_Block array. + * + * Parameters: + * context: [in/out] + * The SHA context to update + * + * Returns: + * Nothing. + * + * Comments: + * Many of the variable names in this code, especially the + * single character names, were used because those were the + * names used in the publication. + */ +static void SHA224_256ProcessMessageBlock(SHA256Context *context) +{ + /* Constants defined in FIPS-180-2, section 4.2.2 */ + static const uint32_t K[64] = { + 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, + 0x59f111f1, 0x923f82a4, 0xab1c5ed5, 0xd807aa98, 0x12835b01, + 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, + 0xc19bf174, 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, + 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da, 0x983e5152, + 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, + 0x06ca6351, 0x14292967, 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, + 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, + 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, + 0xd6990624, 0xf40e3585, 0x106aa070, 0x19a4c116, 0x1e376c08, + 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, + 0x682e6ff3, 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, + 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2 + }; + int t, t4; /* Loop counter */ + uint32_t temp1, temp2; /* Temporary word value */ + uint32_t W[64]; /* Word sequence */ + uint32_t A, B, C, D, E, F, G, H; /* Word buffers */ + + /* + * Initialize the first 16 words in the array W + */ + for (t = t4 = 0; t < 16; t++, t4 += 4) + W[t] = (((uint32_t)context->Message_Block[t4]) << 24) | + (((uint32_t)context->Message_Block[t4 + 1]) << 16) | + (((uint32_t)context->Message_Block[t4 + 2]) << 8) | + (((uint32_t)context->Message_Block[t4 + 3])); + for (t = 16; t < 64; t++) + W[t] = SHA256_sigma1(W[t-2]) + W[t-7] + + SHA256_sigma0(W[t-15]) + W[t-16]; + + A = context->Intermediate_Hash[0]; + B = context->Intermediate_Hash[1]; + C = context->Intermediate_Hash[2]; + D = context->Intermediate_Hash[3]; + E = context->Intermediate_Hash[4]; + F = context->Intermediate_Hash[5]; + G = context->Intermediate_Hash[6]; + H = context->Intermediate_Hash[7]; + + for (t = 0; t < 64; t++) { + temp1 = H + SHA256_SIGMA1(E) + SHA_Ch(E,F,G) + K[t] + W[t]; + temp2 = SHA256_SIGMA0(A) + SHA_Maj(A,B,C); + H = G; + G = F; + F = E; + E = D + temp1; + D = C; + C = B; + B = A; + A = temp1 + temp2; + } + + context->Intermediate_Hash[0] += A; + context->Intermediate_Hash[1] += B; + context->Intermediate_Hash[2] += C; + context->Intermediate_Hash[3] += D; + context->Intermediate_Hash[4] += E; + context->Intermediate_Hash[5] += F; + context->Intermediate_Hash[6] += G; + context->Intermediate_Hash[7] += H; + + context->Message_Block_Index = 0; +} + +/* + * SHA224_256Reset + * + * Description: + * This helper function will initialize the SHA256Context in + * preparation for computing a new SHA256 message digest. + * + * Parameters: + * context: [in/out] + * The context to reset. + * H0 + * The initial hash value to use. + * + * Returns: + * sha Error Code. + */ +static int SHA224_256Reset(SHA256Context *context, uint32_t *H0) +{ + if (!context) + return shaNull; + + context->Length_Low = 0; + context->Length_High = 0; + context->Message_Block_Index = 0; + + context->Intermediate_Hash[0] = H0[0]; + context->Intermediate_Hash[1] = H0[1]; + context->Intermediate_Hash[2] = H0[2]; + context->Intermediate_Hash[3] = H0[3]; + context->Intermediate_Hash[4] = H0[4]; + context->Intermediate_Hash[5] = H0[5]; + context->Intermediate_Hash[6] = H0[6]; + context->Intermediate_Hash[7] = H0[7]; + + context->Computed = 0; + context->Corrupted = 0; + + return shaSuccess; +} + +/* + * SHA224_256ResultN + * + * Description: + * This helper function will return the 224-bit or 256-bit message + * digest into the Message_Digest array provided by the caller. + * NOTE: The first octet of hash is stored in the 0th element, + * the last octet of hash in the 28th/32nd element. + * + * Parameters: + * context: [in/out] + * The context to use to calculate the SHA hash. + * Message_Digest: [out] + * Where the digest is returned. + * HashSize: [in] + * The size of the hash, either 28 or 32. + * + * Returns: + * sha Error Code. + */ +static int SHA224_256ResultN(SHA256Context *context, + uint8_t Message_Digest[], int HashSize) +{ + int i; + + if (!context || !Message_Digest) + return shaNull; + + if (context->Corrupted) + return context->Corrupted; + + if (!context->Computed) + SHA224_256Finalize(context, 0x80); + + for (i = 0; i < HashSize; ++i) + Message_Digest[i] = (uint8_t) + (context->Intermediate_Hash[i>>2] >> 8 * ( 3 - ( i & 0x03 ) )); + + return shaSuccess; +} diff --git a/imap/src/c-client/sha384-512.c b/imap/src/c-client/sha384-512.c new file mode 100644 index 00000000..4d35ccda --- /dev/null +++ b/imap/src/c-client/sha384-512.c @@ -0,0 +1,1033 @@ +/*************************** sha384-512.c ***************************/ +/********************* See RFC 4634 for details *********************/ +/* + * Description: + * This file implements the Secure Hash Signature Standard + * algorithms as defined in the National Institute of Standards + * and Technology Federal Information Processing Standards + * Publication (FIPS PUB) 180-1 published on April 17, 1995, 180-2 + * published on August 1, 2002, and the FIPS PUB 180-2 Change + * Notice published on February 28, 2004. + * + * A combined document showing all algorithms is available at + * http://csrc.nist.gov/publications/fips/ + * fips180-2/fips180-2withchangenotice.pdf + * + * The SHA-384 and SHA-512 algorithms produce 384-bit and 512-bit + * message digests for a given data stream. It should take about + * 2**n steps to find a message with the same digest as a given + * message and 2**(n/2) to find any two messages with the same + * digest, when n is the digest size in bits. Therefore, this + * algorithm can serve as a means of providing a + * "fingerprint" for a message. + * + * Portability Issues: + * SHA-384 and SHA-512 are defined in terms of 64-bit "words", + * but if USE_32BIT_ONLY is #defined, this code is implemented in + * terms of 32-bit "words". This code uses <stdint.h> (included + * via "sha.h") to define the 64, 32 and 8 bit unsigned integer + * types. If your C compiler does not support 64 bit unsigned + * integers, and you do not #define USE_32BIT_ONLY, this code is + * not appropriate. + * + * Caveats: + * SHA-384 and SHA-512 are designed to work with messages less + * than 2^128 bits long. This implementation uses + * SHA384/512Input() to hash the bits that are a multiple of the + * size of an 8-bit character, and then uses SHA384/256FinalBits() + * to hash the final few bits of the input. + * + */ + +#include "sha.h" +#include "sha-private.h" + +#ifdef USE_32BIT_ONLY +/* + * Define 64-bit arithmetic in terms of 32-bit arithmetic. + * Each 64-bit number is represented in a 2-word array. + * All macros are defined such that the result is the last parameter. + */ + +/* + * Define shift, rotate left and rotate right functions + */ +#define SHA512_SHR(bits, word, ret) ( \ + /* (((uint64_t)((word))) >> (bits)) */ \ + (ret)[0] = (((bits) < 32) && ((bits) >= 0)) ? \ + ((word)[0] >> (bits)) : 0, \ + (ret)[1] = ((bits) > 32) ? ((word)[0] >> ((bits) - 32)) : \ + ((bits) == 32) ? (word)[0] : \ + ((bits) >= 0) ? \ + (((word)[0] << (32 - (bits))) | \ + ((word)[1] >> (bits))) : 0 ) + +#define SHA512_SHL(bits, word, ret) ( \ + /* (((uint64_t)(word)) << (bits)) */ \ + (ret)[0] = ((bits) > 32) ? ((word)[1] << ((bits) - 32)) : \ + ((bits) == 32) ? (word)[1] : \ + ((bits) >= 0) ? \ + (((word)[0] << (bits)) | \ + ((word)[1] >> (32 - (bits)))) : \ + 0, \ + (ret)[1] = (((bits) < 32) && ((bits) >= 0)) ? \ + ((word)[1] << (bits)) : 0 ) + +/* + * Define 64-bit OR + */ +#define SHA512_OR(word1, word2, ret) ( \ + (ret)[0] = (word1)[0] | (word2)[0], \ + (ret)[1] = (word1)[1] | (word2)[1] ) + +/* + * Define 64-bit XOR + */ +#define SHA512_XOR(word1, word2, ret) ( \ + (ret)[0] = (word1)[0] ^ (word2)[0], \ + (ret)[1] = (word1)[1] ^ (word2)[1] ) + +/* + * Define 64-bit AND + */ +#define SHA512_AND(word1, word2, ret) ( \ + (ret)[0] = (word1)[0] & (word2)[0], \ + (ret)[1] = (word1)[1] & (word2)[1] ) + +/* + * Define 64-bit TILDA + */ +#define SHA512_TILDA(word, ret) \ + ( (ret)[0] = ~(word)[0], (ret)[1] = ~(word)[1] ) + +/* + * Define 64-bit ADD + */ +#define SHA512_ADD(word1, word2, ret) ( \ + (ret)[1] = (word1)[1], (ret)[1] += (word2)[1], \ + (ret)[0] = (word1)[0] + (word2)[0] + ((ret)[1] < (word1)[1]) ) + +/* + * Add the 4word value in word2 to word1. + */ +static uint32_t ADDTO4_temp, ADDTO4_temp2; +#define SHA512_ADDTO4(word1, word2) ( \ + ADDTO4_temp = (word1)[3], \ + (word1)[3] += (word2)[3], \ + ADDTO4_temp2 = (word1)[2], \ + (word1)[2] += (word2)[2] + ((word1)[3] < ADDTO4_temp), \ + ADDTO4_temp = (word1)[1], \ + (word1)[1] += (word2)[1] + ((word1)[2] < ADDTO4_temp2), \ + (word1)[0] += (word2)[0] + ((word1)[1] < ADDTO4_temp) ) + +/* + * Add the 2word value in word2 to word1. + */ +static uint32_t ADDTO2_temp; +#define SHA512_ADDTO2(word1, word2) ( \ + ADDTO2_temp = (word1)[1], \ + (word1)[1] += (word2)[1], \ + (word1)[0] += (word2)[0] + ((word1)[1] < ADDTO2_temp) ) + +/* + * SHA rotate ((word >> bits) | (word << (64-bits))) + */ +static uint32_t ROTR_temp1[2], ROTR_temp2[2]; +#define SHA512_ROTR(bits, word, ret) ( \ + SHA512_SHR((bits), (word), ROTR_temp1), \ + SHA512_SHL(64-(bits), (word), ROTR_temp2), \ + SHA512_OR(ROTR_temp1, ROTR_temp2, (ret)) ) + +/* + * Define the SHA SIGMA and sigma macros + * SHA512_ROTR(28,word) ^ SHA512_ROTR(34,word) ^ SHA512_ROTR(39,word) + */ +static uint32_t SIGMA0_temp1[2], SIGMA0_temp2[2], + SIGMA0_temp3[2], SIGMA0_temp4[2]; +#define SHA512_SIGMA0(word, ret) ( \ + SHA512_ROTR(28, (word), SIGMA0_temp1), \ + SHA512_ROTR(34, (word), SIGMA0_temp2), \ + SHA512_ROTR(39, (word), SIGMA0_temp3), \ + SHA512_XOR(SIGMA0_temp2, SIGMA0_temp3, SIGMA0_temp4), \ + SHA512_XOR(SIGMA0_temp1, SIGMA0_temp4, (ret)) ) + +/* + * SHA512_ROTR(14,word) ^ SHA512_ROTR(18,word) ^ SHA512_ROTR(41,word) + */ +static uint32_t SIGMA1_temp1[2], SIGMA1_temp2[2], + SIGMA1_temp3[2], SIGMA1_temp4[2]; +#define SHA512_SIGMA1(word, ret) ( \ + SHA512_ROTR(14, (word), SIGMA1_temp1), \ + SHA512_ROTR(18, (word), SIGMA1_temp2), \ + SHA512_ROTR(41, (word), SIGMA1_temp3), \ + SHA512_XOR(SIGMA1_temp2, SIGMA1_temp3, SIGMA1_temp4), \ + SHA512_XOR(SIGMA1_temp1, SIGMA1_temp4, (ret)) ) + +/* + * (SHA512_ROTR( 1,word) ^ SHA512_ROTR( 8,word) ^ SHA512_SHR( 7,word)) + */ +static uint32_t sigma0_temp1[2], sigma0_temp2[2], + sigma0_temp3[2], sigma0_temp4[2]; +#define SHA512_sigma0(word, ret) ( \ + SHA512_ROTR( 1, (word), sigma0_temp1), \ + SHA512_ROTR( 8, (word), sigma0_temp2), \ + SHA512_SHR( 7, (word), sigma0_temp3), \ + SHA512_XOR(sigma0_temp2, sigma0_temp3, sigma0_temp4), \ + SHA512_XOR(sigma0_temp1, sigma0_temp4, (ret)) ) + +/* + * (SHA512_ROTR(19,word) ^ SHA512_ROTR(61,word) ^ SHA512_SHR( 6,word)) + */ +static uint32_t sigma1_temp1[2], sigma1_temp2[2], + sigma1_temp3[2], sigma1_temp4[2]; +#define SHA512_sigma1(word, ret) ( \ + SHA512_ROTR(19, (word), sigma1_temp1), \ + SHA512_ROTR(61, (word), sigma1_temp2), \ + SHA512_SHR( 6, (word), sigma1_temp3), \ + SHA512_XOR(sigma1_temp2, sigma1_temp3, sigma1_temp4), \ + SHA512_XOR(sigma1_temp1, sigma1_temp4, (ret)) ) + +#undef SHA_Ch +#undef SHA_Maj + +#ifndef USE_MODIFIED_MACROS +/* + * These definitions are the ones used in FIPS-180-2, section 4.1.3 + * Ch(x,y,z) ((x & y) ^ (~x & z)) + */ +static uint32_t Ch_temp1[2], Ch_temp2[2], Ch_temp3[2]; +#define SHA_Ch(x, y, z, ret) ( \ + SHA512_AND(x, y, Ch_temp1), \ + SHA512_TILDA(x, Ch_temp2), \ + SHA512_AND(Ch_temp2, z, Ch_temp3), \ + SHA512_XOR(Ch_temp1, Ch_temp3, (ret)) ) +/* + * Maj(x,y,z) (((x)&(y)) ^ ((x)&(z)) ^ ((y)&(z))) + */ +static uint32_t Maj_temp1[2], Maj_temp2[2], + Maj_temp3[2], Maj_temp4[2]; +#define SHA_Maj(x, y, z, ret) ( \ + SHA512_AND(x, y, Maj_temp1), \ + SHA512_AND(x, z, Maj_temp2), \ + SHA512_AND(y, z, Maj_temp3), \ + SHA512_XOR(Maj_temp2, Maj_temp3, Maj_temp4), \ + SHA512_XOR(Maj_temp1, Maj_temp4, (ret)) ) +#else /* !USE_32BIT_ONLY */ +/* + * These definitions are potentially faster equivalents for the ones + * used in FIPS-180-2, section 4.1.3. + * ((x & y) ^ (~x & z)) becomes + * ((x & (y ^ z)) ^ z) + */ +#define SHA_Ch(x, y, z, ret) ( \ + (ret)[0] = (((x)[0] & ((y)[0] ^ (z)[0])) ^ (z)[0]), \ + (ret)[1] = (((x)[1] & ((y)[1] ^ (z)[1])) ^ (z)[1]) ) + +/* + * ((x & y) ^ (x & z) ^ (y & z)) becomes + * ((x & (y | z)) | (y & z)) + */ +#define SHA_Maj(x, y, z, ret) ( \ + ret[0] = (((x)[0] & ((y)[0] | (z)[0])) | ((y)[0] & (z)[0])), \ + ret[1] = (((x)[1] & ((y)[1] | (z)[1])) | ((y)[1] & (z)[1])) ) +#endif /* USE_MODIFIED_MACROS */ + +/* + * add "length" to the length + */ +static uint32_t addTemp32[4] = { 0, 0, 0, 0 }; +#define SHA384_512AddLength(context, length) ( \ + addTemp32[3] = (length), SHA512_ADDTO4((context)->Length, addTemp32), \ + (context)->Corrupted = (((context)->Length[3] == 0) && \ + ((context)->Length[2] == 0) && ((context)->Length[1] == 0) && \ + ((context)->Length[0] < 8)) ? 1 : 0 ) + +/* Local Function Prototypes */ +static void SHA384_512Finalize(SHA512Context *context, + uint8_t Pad_Byte); +static void SHA384_512PadMessage(SHA512Context *context, + uint8_t Pad_Byte); +static void SHA384_512ProcessMessageBlock(SHA512Context *context); +static int SHA384_512Reset(SHA512Context *context, uint32_t H0[]); +static int SHA384_512ResultN( SHA512Context *context, + uint8_t Message_Digest[], int HashSize); + +/* Initial Hash Values: FIPS-180-2 sections 5.3.3 and 5.3.4 */ +static uint32_t SHA384_H0[SHA512HashSize/4] = { + 0xCBBB9D5D, 0xC1059ED8, 0x629A292A, 0x367CD507, 0x9159015A, + 0x3070DD17, 0x152FECD8, 0xF70E5939, 0x67332667, 0xFFC00B31, + 0x8EB44A87, 0x68581511, 0xDB0C2E0D, 0x64F98FA7, 0x47B5481D, + 0xBEFA4FA4 +}; + +static uint32_t SHA512_H0[SHA512HashSize/4] = { + 0x6A09E667, 0xF3BCC908, 0xBB67AE85, 0x84CAA73B, 0x3C6EF372, + 0xFE94F82B, 0xA54FF53A, 0x5F1D36F1, 0x510E527F, 0xADE682D1, + 0x9B05688C, 0x2B3E6C1F, 0x1F83D9AB, 0xFB41BD6B, 0x5BE0CD19, + 0x137E2179 +}; + +#else /* !USE_32BIT_ONLY */ + +/* Define the SHA shift, rotate left and rotate right macro */ +#define SHA512_SHR(bits,word) (((uint64_t)(word)) >> (bits)) +#define SHA512_ROTR(bits,word) ((((uint64_t)(word)) >> (bits)) | \ + (((uint64_t)(word)) << (64-(bits)))) + +/* Define the SHA SIGMA and sigma macros */ +#define SHA512_SIGMA0(word) \ + (SHA512_ROTR(28,word) ^ SHA512_ROTR(34,word) ^ SHA512_ROTR(39,word)) +#define SHA512_SIGMA1(word) \ + (SHA512_ROTR(14,word) ^ SHA512_ROTR(18,word) ^ SHA512_ROTR(41,word)) +#define SHA512_sigma0(word) \ + (SHA512_ROTR( 1,word) ^ SHA512_ROTR( 8,word) ^ SHA512_SHR( 7,word)) +#define SHA512_sigma1(word) \ + (SHA512_ROTR(19,word) ^ SHA512_ROTR(61,word) ^ SHA512_SHR( 6,word)) + +/* + * add "length" to the length + */ +static uint64_t addTemp64; +#define SHA384_512AddLength(context, length) \ + (addTemp64 = context->Length_Low, context->Corrupted = \ + ((context->Length_Low += length) < addTemp64) && \ + (++context->Length_High == 0) ? 1 : 0) + +/* Local Function Prototypes */ +static void SHA384_512Finalize(SHA512Context *context, + uint8_t Pad_Byte); +static void SHA384_512PadMessage(SHA512Context *context, + uint8_t Pad_Byte); +static void SHA384_512ProcessMessageBlock(SHA512Context *context); +static int SHA384_512Reset(SHA512Context *context, uint64_t H0[]); +static int SHA384_512ResultN(SHA512Context *context, + uint8_t Message_Digest[], int HashSize); + +/* Initial Hash Values: FIPS-180-2 sections 5.3.3 and 5.3.4 */ +static uint64_t SHA384_H0[] = { + 0xCBBB9D5DC1059ED8ll, 0x629A292A367CD507ll, 0x9159015A3070DD17ll, + 0x152FECD8F70E5939ll, 0x67332667FFC00B31ll, 0x8EB44A8768581511ll, + 0xDB0C2E0D64F98FA7ll, 0x47B5481DBEFA4FA4ll +}; +static uint64_t SHA512_H0[] = { + 0x6A09E667F3BCC908ll, 0xBB67AE8584CAA73Bll, 0x3C6EF372FE94F82Bll, + 0xA54FF53A5F1D36F1ll, 0x510E527FADE682D1ll, 0x9B05688C2B3E6C1Fll, + 0x1F83D9ABFB41BD6Bll, 0x5BE0CD19137E2179ll +}; + +#endif /* USE_32BIT_ONLY */ + +/* + * SHA384Reset + * + * Description: + * This function will initialize the SHA384Context in preparation + * for computing a new SHA384 message digest. + * + * Parameters: + * context: [in/out] + * The context to reset. + * + * Returns: + * sha Error Code. + * + */ +int SHA384Reset(SHA384Context *context) +{ + return SHA384_512Reset(context, SHA384_H0); +} + +/* + * SHA384Input + * + * Description: + * This function accepts an array of octets as the next portion + * of the message. + * + * Parameters: + * context: [in/out] + * The SHA context to update + * message_array: [in] + * An array of characters representing the next portion of + * the message. + * length: [in] + * The length of the message in message_array + * + * Returns: + * sha Error Code. + * + */ +int SHA384Input(SHA384Context *context, + const uint8_t *message_array, unsigned int length) +{ + return SHA512Input(context, message_array, length); +} + +/* + * SHA384FinalBits + * + * Description: + * This function will add in any final bits of the message. + * + * Parameters: + * context: [in/out] + * The SHA context to update + * message_bits: [in] + * The final bits of the message, in the upper portion of the + * byte. (Use 0b###00000 instead of 0b00000### to input the + * three bits ###.) + * length: [in] + * The number of bits in message_bits, between 1 and 7. + * + * Returns: + * sha Error Code. + * + */ +int SHA384FinalBits(SHA384Context *context, + const uint8_t message_bits, unsigned int length) +{ + return SHA512FinalBits(context, message_bits, length); +} + +/* + * SHA384Result + * + * Description: + * This function will return the 384-bit message + * digest into the Message_Digest array provided by the caller. + * NOTE: The first octet of hash is stored in the 0th element, + * the last octet of hash in the 48th element. + * + * Parameters: + * context: [in/out] + * The context to use to calculate the SHA hash. + * Message_Digest: [out] + * Where the digest is returned. + * + * Returns: + * sha Error Code. + * + */ +int SHA384Result(SHA384Context *context, + uint8_t Message_Digest[SHA384HashSize]) +{ + return SHA384_512ResultN(context, Message_Digest, SHA384HashSize); +} + +/* + * SHA512Reset + * + * Description: + * This function will initialize the SHA512Context in preparation + * for computing a new SHA512 message digest. + * + * Parameters: + * context: [in/out] + * The context to reset. + * + * Returns: + * sha Error Code. + * + */ +int SHA512Reset(SHA512Context *context) +{ + return SHA384_512Reset(context, SHA512_H0); +} + +/* + * SHA512Input + * + * Description: + * This function accepts an array of octets as the next portion + * of the message. + * + * Parameters: + * context: [in/out] + * The SHA context to update + * message_array: [in] + * An array of characters representing the next portion of + * the message. + * length: [in] + * The length of the message in message_array + * + * Returns: + * sha Error Code. + * + */ +int SHA512Input(SHA512Context *context, + const uint8_t *message_array, + unsigned int length) +{ + if (!length) + return shaSuccess; + + if (!context || !message_array) + return shaNull; + + if (context->Computed) { + context->Corrupted = shaStateError; + return shaStateError; + } + + if (context->Corrupted) + return context->Corrupted; + + while (length-- && !context->Corrupted) { + context->Message_Block[context->Message_Block_Index++] = + (*message_array & 0xFF); + + if (!SHA384_512AddLength(context, 8) && + (context->Message_Block_Index == SHA512_Message_Block_Size)) + SHA384_512ProcessMessageBlock(context); + + message_array++; + } + + return shaSuccess; +} + +/* + * SHA512FinalBits + * + * Description: + * This function will add in any final bits of the message. + * + * Parameters: + * context: [in/out] + * The SHA context to update + * message_bits: [in] + * The final bits of the message, in the upper portion of the + * byte. (Use 0b###00000 instead of 0b00000### to input the + * three bits ###.) + * length: [in] + * The number of bits in message_bits, between 1 and 7. + * + * Returns: + * sha Error Code. + * + */ +int SHA512FinalBits(SHA512Context *context, + const uint8_t message_bits, unsigned int length) +{ + uint8_t masks[8] = { + /* 0 0b00000000 */ 0x00, /* 1 0b10000000 */ 0x80, + /* 2 0b11000000 */ 0xC0, /* 3 0b11100000 */ 0xE0, + /* 4 0b11110000 */ 0xF0, /* 5 0b11111000 */ 0xF8, + /* 6 0b11111100 */ 0xFC, /* 7 0b11111110 */ 0xFE + }; + uint8_t markbit[8] = { + /* 0 0b10000000 */ 0x80, /* 1 0b01000000 */ 0x40, + /* 2 0b00100000 */ 0x20, /* 3 0b00010000 */ 0x10, + /* 4 0b00001000 */ 0x08, /* 5 0b00000100 */ 0x04, + /* 6 0b00000010 */ 0x02, /* 7 0b00000001 */ 0x01 + }; + + if (!length) + return shaSuccess; + + if (!context) + return shaNull; + + if ((context->Computed) || (length >= 8) || (length == 0)) { + context->Corrupted = shaStateError; + return shaStateError; + } + + if (context->Corrupted) + return context->Corrupted; + + SHA384_512AddLength(context, length); + SHA384_512Finalize(context, (uint8_t) + ((message_bits & masks[length]) | markbit[length])); + + return shaSuccess; +} + +/* + * SHA384_512Finalize + * + * Description: + * This helper function finishes off the digest calculations. + * + * Parameters: + * context: [in/out] + * The SHA context to update + * Pad_Byte: [in] + * The last byte to add to the digest before the 0-padding + * and length. This will contain the last bits of the message + * followed by another single bit. If the message was an + * exact multiple of 8-bits long, Pad_Byte will be 0x80. + * + * Returns: + * sha Error Code. + * + */ +static void SHA384_512Finalize(SHA512Context *context, + uint8_t Pad_Byte) +{ + int_least16_t i; + SHA384_512PadMessage(context, Pad_Byte); + /* message may be sensitive, clear it out */ + for (i = 0; i < SHA512_Message_Block_Size; ++i) + context->Message_Block[i] = 0; +#ifdef USE_32BIT_ONLY /* and clear length */ + context->Length[0] = context->Length[1] = 0; + context->Length[2] = context->Length[3] = 0; +#else /* !USE_32BIT_ONLY */ + context->Length_Low = 0; + context->Length_High = 0; +#endif /* USE_32BIT_ONLY */ + context->Computed = 1; +} + +/* + * SHA512Result + * + * Description: + * This function will return the 512-bit message + * digest into the Message_Digest array provided by the caller. + * NOTE: The first octet of hash is stored in the 0th element, + * the last octet of hash in the 64th element. + * + * Parameters: + * context: [in/out] + * The context to use to calculate the SHA hash. + * Message_Digest: [out] + * Where the digest is returned. + * + * Returns: + * sha Error Code. + * + */ +int SHA512Result(SHA512Context *context, + uint8_t Message_Digest[SHA512HashSize]) +{ + return SHA384_512ResultN(context, Message_Digest, SHA512HashSize); +} + +/* + * SHA384_512PadMessage + * + * Description: + * According to the standard, the message must be padded to an + * even 1024 bits. The first padding bit must be a '1'. The + * last 128 bits represent the length of the original message. + * All bits in between should be 0. This helper function will + * pad the message according to those rules by filling the + * Message_Block array accordingly. When it returns, it can be + * assumed that the message digest has been computed. + * + * Parameters: + * context: [in/out] + * The context to pad + * Pad_Byte: [in] + * The last byte to add to the digest before the 0-padding + * and length. This will contain the last bits of the message + * followed by another single bit. If the message was an + * exact multiple of 8-bits long, Pad_Byte will be 0x80. + * + * Returns: + * Nothing. + * + */ +static void SHA384_512PadMessage(SHA512Context *context, + uint8_t Pad_Byte) +{ + /* + * Check to see if the current message block is too small to hold + * the initial padding bits and length. If so, we will pad the + * block, process it, and then continue padding into a second + * block. + */ + if (context->Message_Block_Index >= (SHA512_Message_Block_Size-16)) { + context->Message_Block[context->Message_Block_Index++] = Pad_Byte; + while (context->Message_Block_Index < SHA512_Message_Block_Size) + context->Message_Block[context->Message_Block_Index++] = 0; + SHA384_512ProcessMessageBlock(context); + } else + context->Message_Block[context->Message_Block_Index++] = Pad_Byte; + + while (context->Message_Block_Index < (SHA512_Message_Block_Size-16)) + context->Message_Block[context->Message_Block_Index++] = 0; + + /* + * Store the message length as the last 16 octets + */ +#ifdef USE_32BIT_ONLY + context->Message_Block[112] = (uint8_t)(context->Length[0] >> 24); + context->Message_Block[113] = (uint8_t)(context->Length[0] >> 16); + context->Message_Block[114] = (uint8_t)(context->Length[0] >> 8); + context->Message_Block[115] = (uint8_t)(context->Length[0]); + context->Message_Block[116] = (uint8_t)(context->Length[1] >> 24); + context->Message_Block[117] = (uint8_t)(context->Length[1] >> 16); + context->Message_Block[118] = (uint8_t)(context->Length[1] >> 8); + context->Message_Block[119] = (uint8_t)(context->Length[1]); + + context->Message_Block[120] = (uint8_t)(context->Length[2] >> 24); + context->Message_Block[121] = (uint8_t)(context->Length[2] >> 16); + context->Message_Block[122] = (uint8_t)(context->Length[2] >> 8); + context->Message_Block[123] = (uint8_t)(context->Length[2]); + context->Message_Block[124] = (uint8_t)(context->Length[3] >> 24); + context->Message_Block[125] = (uint8_t)(context->Length[3] >> 16); + context->Message_Block[126] = (uint8_t)(context->Length[3] >> 8); + context->Message_Block[127] = (uint8_t)(context->Length[3]); +#else /* !USE_32BIT_ONLY */ + context->Message_Block[112] = (uint8_t)(context->Length_High >> 56); + context->Message_Block[113] = (uint8_t)(context->Length_High >> 48); + context->Message_Block[114] = (uint8_t)(context->Length_High >> 40); + context->Message_Block[115] = (uint8_t)(context->Length_High >> 32); + context->Message_Block[116] = (uint8_t)(context->Length_High >> 24); + context->Message_Block[117] = (uint8_t)(context->Length_High >> 16); + context->Message_Block[118] = (uint8_t)(context->Length_High >> 8); + context->Message_Block[119] = (uint8_t)(context->Length_High); + + context->Message_Block[120] = (uint8_t)(context->Length_Low >> 56); + context->Message_Block[121] = (uint8_t)(context->Length_Low >> 48); + context->Message_Block[122] = (uint8_t)(context->Length_Low >> 40); + context->Message_Block[123] = (uint8_t)(context->Length_Low >> 32); + context->Message_Block[124] = (uint8_t)(context->Length_Low >> 24); + context->Message_Block[125] = (uint8_t)(context->Length_Low >> 16); + context->Message_Block[126] = (uint8_t)(context->Length_Low >> 8); + context->Message_Block[127] = (uint8_t)(context->Length_Low); +#endif /* USE_32BIT_ONLY */ + SHA384_512ProcessMessageBlock(context); +} + +/* + * SHA384_512ProcessMessageBlock + * + * Description: + * This helper function will process the next 1024 bits of the + * message stored in the Message_Block array. + * + * Parameters: + * context: [in/out] + * The SHA context to update + * + * Returns: + * Nothing. + * + * Comments: + * Many of the variable names in this code, especially the + * single character names, were used because those were the + * names used in the publication. + * + * + */ +static void SHA384_512ProcessMessageBlock(SHA512Context *context) +{ + /* Constants defined in FIPS-180-2, section 4.2.3 */ +#ifdef USE_32BIT_ONLY + static const uint32_t K[80*2] = { + 0x428A2F98, 0xD728AE22, 0x71374491, 0x23EF65CD, 0xB5C0FBCF, + 0xEC4D3B2F, 0xE9B5DBA5, 0x8189DBBC, 0x3956C25B, 0xF348B538, + 0x59F111F1, 0xB605D019, 0x923F82A4, 0xAF194F9B, 0xAB1C5ED5, + 0xDA6D8118, 0xD807AA98, 0xA3030242, 0x12835B01, 0x45706FBE, + 0x243185BE, 0x4EE4B28C, 0x550C7DC3, 0xD5FFB4E2, 0x72BE5D74, + 0xF27B896F, 0x80DEB1FE, 0x3B1696B1, 0x9BDC06A7, 0x25C71235, + 0xC19BF174, 0xCF692694, 0xE49B69C1, 0x9EF14AD2, 0xEFBE4786, + 0x384F25E3, 0x0FC19DC6, 0x8B8CD5B5, 0x240CA1CC, 0x77AC9C65, + 0x2DE92C6F, 0x592B0275, 0x4A7484AA, 0x6EA6E483, 0x5CB0A9DC, + 0xBD41FBD4, 0x76F988DA, 0x831153B5, 0x983E5152, 0xEE66DFAB, + 0xA831C66D, 0x2DB43210, 0xB00327C8, 0x98FB213F, 0xBF597FC7, + 0xBEEF0EE4, 0xC6E00BF3, 0x3DA88FC2, 0xD5A79147, 0x930AA725, + 0x06CA6351, 0xE003826F, 0x14292967, 0x0A0E6E70, 0x27B70A85, + 0x46D22FFC, 0x2E1B2138, 0x5C26C926, 0x4D2C6DFC, 0x5AC42AED, + 0x53380D13, 0x9D95B3DF, 0x650A7354, 0x8BAF63DE, 0x766A0ABB, + 0x3C77B2A8, 0x81C2C92E, 0x47EDAEE6, 0x92722C85, 0x1482353B, + 0xA2BFE8A1, 0x4CF10364, 0xA81A664B, 0xBC423001, 0xC24B8B70, + 0xD0F89791, 0xC76C51A3, 0x0654BE30, 0xD192E819, 0xD6EF5218, + 0xD6990624, 0x5565A910, 0xF40E3585, 0x5771202A, 0x106AA070, + 0x32BBD1B8, 0x19A4C116, 0xB8D2D0C8, 0x1E376C08, 0x5141AB53, + 0x2748774C, 0xDF8EEB99, 0x34B0BCB5, 0xE19B48A8, 0x391C0CB3, + 0xC5C95A63, 0x4ED8AA4A, 0xE3418ACB, 0x5B9CCA4F, 0x7763E373, + 0x682E6FF3, 0xD6B2B8A3, 0x748F82EE, 0x5DEFB2FC, 0x78A5636F, + 0x43172F60, 0x84C87814, 0xA1F0AB72, 0x8CC70208, 0x1A6439EC, + 0x90BEFFFA, 0x23631E28, 0xA4506CEB, 0xDE82BDE9, 0xBEF9A3F7, + 0xB2C67915, 0xC67178F2, 0xE372532B, 0xCA273ECE, 0xEA26619C, + 0xD186B8C7, 0x21C0C207, 0xEADA7DD6, 0xCDE0EB1E, 0xF57D4F7F, + 0xEE6ED178, 0x06F067AA, 0x72176FBA, 0x0A637DC5, 0xA2C898A6, + 0x113F9804, 0xBEF90DAE, 0x1B710B35, 0x131C471B, 0x28DB77F5, + 0x23047D84, 0x32CAAB7B, 0x40C72493, 0x3C9EBE0A, 0x15C9BEBC, + 0x431D67C4, 0x9C100D4C, 0x4CC5D4BE, 0xCB3E42B6, 0x597F299C, + 0xFC657E2A, 0x5FCB6FAB, 0x3AD6FAEC, 0x6C44198C, 0x4A475817 + }; + int t, t2, t8; /* Loop counter */ + uint32_t temp1[2], temp2[2], /* Temporary word values */ + temp3[2], temp4[2], temp5[2]; + uint32_t W[2*80]; /* Word sequence */ + uint32_t A[2], B[2], C[2], D[2], /* Word buffers */ + E[2], F[2], G[2], H[2]; + + /* Initialize the first 16 words in the array W */ + for (t = t2 = t8 = 0; t < 16; t++, t8 += 8) { + W[t2++] = ((((uint32_t)context->Message_Block[t8 ])) << 24) | + ((((uint32_t)context->Message_Block[t8 + 1])) << 16) | + ((((uint32_t)context->Message_Block[t8 + 2])) << 8) | + ((((uint32_t)context->Message_Block[t8 + 3]))); + W[t2++] = ((((uint32_t)context->Message_Block[t8 + 4])) << 24) | + ((((uint32_t)context->Message_Block[t8 + 5])) << 16) | + ((((uint32_t)context->Message_Block[t8 + 6])) << 8) | + ((((uint32_t)context->Message_Block[t8 + 7]))); + } + + for (t = 16; t < 80; t++, t2 += 2) { + /* W[t] = SHA512_sigma1(W[t-2]) + W[t-7] + + SHA512_sigma0(W[t-15]) + W[t-16]; */ + uint32_t *Wt2 = &W[t2-2*2]; + uint32_t *Wt7 = &W[t2-7*2]; + uint32_t *Wt15 = &W[t2-15*2]; + uint32_t *Wt16 = &W[t2-16*2]; + SHA512_sigma1(Wt2, temp1); + SHA512_ADD(temp1, Wt7, temp2); + SHA512_sigma0(Wt15, temp1); + SHA512_ADD(temp1, Wt16, temp3); + SHA512_ADD(temp2, temp3, &W[t2]); + } + + A[0] = context->Intermediate_Hash[0]; + A[1] = context->Intermediate_Hash[1]; + B[0] = context->Intermediate_Hash[2]; + B[1] = context->Intermediate_Hash[3]; + C[0] = context->Intermediate_Hash[4]; + C[1] = context->Intermediate_Hash[5]; + D[0] = context->Intermediate_Hash[6]; + D[1] = context->Intermediate_Hash[7]; + E[0] = context->Intermediate_Hash[8]; + E[1] = context->Intermediate_Hash[9]; + F[0] = context->Intermediate_Hash[10]; + F[1] = context->Intermediate_Hash[11]; + G[0] = context->Intermediate_Hash[12]; + G[1] = context->Intermediate_Hash[13]; + H[0] = context->Intermediate_Hash[14]; + H[1] = context->Intermediate_Hash[15]; + + for (t = t2 = 0; t < 80; t++, t2 += 2) { + /* + * temp1 = H + SHA512_SIGMA1(E) + SHA_Ch(E,F,G) + K[t] + W[t]; + */ + SHA512_SIGMA1(E,temp1); + SHA512_ADD(H, temp1, temp2); + SHA_Ch(E,F,G,temp3); + SHA512_ADD(temp2, temp3, temp4); + SHA512_ADD(&K[t2], &W[t2], temp5); + SHA512_ADD(temp4, temp5, temp1); + /* + * temp2 = SHA512_SIGMA0(A) + SHA_Maj(A,B,C); + */ + SHA512_SIGMA0(A,temp3); + SHA_Maj(A,B,C,temp4); + SHA512_ADD(temp3, temp4, temp2); + H[0] = G[0]; H[1] = G[1]; + G[0] = F[0]; G[1] = F[1]; + F[0] = E[0]; F[1] = E[1]; + SHA512_ADD(D, temp1, E); + D[0] = C[0]; D[1] = C[1]; + C[0] = B[0]; C[1] = B[1]; + B[0] = A[0]; B[1] = A[1]; + SHA512_ADD(temp1, temp2, A); + } + + SHA512_ADDTO2(&context->Intermediate_Hash[0], A); + SHA512_ADDTO2(&context->Intermediate_Hash[2], B); + SHA512_ADDTO2(&context->Intermediate_Hash[4], C); + SHA512_ADDTO2(&context->Intermediate_Hash[6], D); + SHA512_ADDTO2(&context->Intermediate_Hash[8], E); + SHA512_ADDTO2(&context->Intermediate_Hash[10], F); + SHA512_ADDTO2(&context->Intermediate_Hash[12], G); + SHA512_ADDTO2(&context->Intermediate_Hash[14], H); + +#else /* !USE_32BIT_ONLY */ + static const uint64_t K[80] = { + 0x428A2F98D728AE22ll, 0x7137449123EF65CDll, 0xB5C0FBCFEC4D3B2Fll, + 0xE9B5DBA58189DBBCll, 0x3956C25BF348B538ll, 0x59F111F1B605D019ll, + 0x923F82A4AF194F9Bll, 0xAB1C5ED5DA6D8118ll, 0xD807AA98A3030242ll, + 0x12835B0145706FBEll, 0x243185BE4EE4B28Cll, 0x550C7DC3D5FFB4E2ll, + 0x72BE5D74F27B896Fll, 0x80DEB1FE3B1696B1ll, 0x9BDC06A725C71235ll, + 0xC19BF174CF692694ll, 0xE49B69C19EF14AD2ll, 0xEFBE4786384F25E3ll, + 0x0FC19DC68B8CD5B5ll, 0x240CA1CC77AC9C65ll, 0x2DE92C6F592B0275ll, + 0x4A7484AA6EA6E483ll, 0x5CB0A9DCBD41FBD4ll, 0x76F988DA831153B5ll, + 0x983E5152EE66DFABll, 0xA831C66D2DB43210ll, 0xB00327C898FB213Fll, + 0xBF597FC7BEEF0EE4ll, 0xC6E00BF33DA88FC2ll, 0xD5A79147930AA725ll, + 0x06CA6351E003826Fll, 0x142929670A0E6E70ll, 0x27B70A8546D22FFCll, + 0x2E1B21385C26C926ll, 0x4D2C6DFC5AC42AEDll, 0x53380D139D95B3DFll, + 0x650A73548BAF63DEll, 0x766A0ABB3C77B2A8ll, 0x81C2C92E47EDAEE6ll, + 0x92722C851482353Bll, 0xA2BFE8A14CF10364ll, 0xA81A664BBC423001ll, + 0xC24B8B70D0F89791ll, 0xC76C51A30654BE30ll, 0xD192E819D6EF5218ll, + 0xD69906245565A910ll, 0xF40E35855771202All, 0x106AA07032BBD1B8ll, + 0x19A4C116B8D2D0C8ll, 0x1E376C085141AB53ll, 0x2748774CDF8EEB99ll, + 0x34B0BCB5E19B48A8ll, 0x391C0CB3C5C95A63ll, 0x4ED8AA4AE3418ACBll, + 0x5B9CCA4F7763E373ll, 0x682E6FF3D6B2B8A3ll, 0x748F82EE5DEFB2FCll, + 0x78A5636F43172F60ll, 0x84C87814A1F0AB72ll, 0x8CC702081A6439ECll, + 0x90BEFFFA23631E28ll, 0xA4506CEBDE82BDE9ll, 0xBEF9A3F7B2C67915ll, + 0xC67178F2E372532Bll, 0xCA273ECEEA26619Cll, 0xD186B8C721C0C207ll, + 0xEADA7DD6CDE0EB1Ell, 0xF57D4F7FEE6ED178ll, 0x06F067AA72176FBAll, + 0x0A637DC5A2C898A6ll, 0x113F9804BEF90DAEll, 0x1B710B35131C471Bll, + 0x28DB77F523047D84ll, 0x32CAAB7B40C72493ll, 0x3C9EBE0A15C9BEBCll, + 0x431D67C49C100D4Cll, 0x4CC5D4BECB3E42B6ll, 0x597F299CFC657E2All, + 0x5FCB6FAB3AD6FAECll, 0x6C44198C4A475817ll + }; + int t, t8; /* Loop counter */ + uint64_t temp1, temp2; /* Temporary word value */ + uint64_t W[80]; /* Word sequence */ + uint64_t A, B, C, D, E, F, G, H; /* Word buffers */ + + /* + * Initialize the first 16 words in the array W + */ + for (t = t8 = 0; t < 16; t++, t8 += 8) + W[t] = ((uint64_t)(context->Message_Block[t8 ]) << 56) | + ((uint64_t)(context->Message_Block[t8 + 1]) << 48) | + ((uint64_t)(context->Message_Block[t8 + 2]) << 40) | + ((uint64_t)(context->Message_Block[t8 + 3]) << 32) | + ((uint64_t)(context->Message_Block[t8 + 4]) << 24) | + ((uint64_t)(context->Message_Block[t8 + 5]) << 16) | + ((uint64_t)(context->Message_Block[t8 + 6]) << 8) | + ((uint64_t)(context->Message_Block[t8 + 7])); + + for (t = 16; t < 80; t++) + W[t] = SHA512_sigma1(W[t-2]) + W[t-7] + + SHA512_sigma0(W[t-15]) + W[t-16]; + + A = context->Intermediate_Hash[0]; + B = context->Intermediate_Hash[1]; + C = context->Intermediate_Hash[2]; + D = context->Intermediate_Hash[3]; + E = context->Intermediate_Hash[4]; + F = context->Intermediate_Hash[5]; + G = context->Intermediate_Hash[6]; + H = context->Intermediate_Hash[7]; + + for (t = 0; t < 80; t++) { + temp1 = H + SHA512_SIGMA1(E) + SHA_Ch(E,F,G) + K[t] + W[t]; + temp2 = SHA512_SIGMA0(A) + SHA_Maj(A,B,C); + H = G; + G = F; + F = E; + E = D + temp1; + D = C; + C = B; + B = A; + A = temp1 + temp2; + } + + context->Intermediate_Hash[0] += A; + context->Intermediate_Hash[1] += B; + context->Intermediate_Hash[2] += C; + context->Intermediate_Hash[3] += D; + context->Intermediate_Hash[4] += E; + context->Intermediate_Hash[5] += F; + context->Intermediate_Hash[6] += G; + context->Intermediate_Hash[7] += H; +#endif /* USE_32BIT_ONLY */ + + context->Message_Block_Index = 0; +} + +/* + * SHA384_512Reset + * + * Description: + * This helper function will initialize the SHA512Context in + * preparation for computing a new SHA384 or SHA512 message + * digest. + * + * Parameters: + * context: [in/out] + * The context to reset. + * H0 + * The initial hash value to use. + * + * Returns: + * sha Error Code. + * + */ +#ifdef USE_32BIT_ONLY +static int SHA384_512Reset(SHA512Context *context, uint32_t H0[]) +#else /* !USE_32BIT_ONLY */ +static int SHA384_512Reset(SHA512Context *context, uint64_t H0[]) +#endif /* USE_32BIT_ONLY */ +{ + int i; + if (!context) + return shaNull; + + context->Message_Block_Index = 0; + +#ifdef USE_32BIT_ONLY + context->Length[0] = context->Length[1] = 0; + context->Length[2] = context->Length[3] = 0; + + for (i = 0; i < SHA512HashSize/4; i++) + context->Intermediate_Hash[i] = H0[i]; +#else /* !USE_32BIT_ONLY */ + context->Length_High = context->Length_Low = 0; + + for (i = 0; i < SHA512HashSize/8; i++) + context->Intermediate_Hash[i] = H0[i]; +#endif /* USE_32BIT_ONLY */ + + context->Computed = 0; + context->Corrupted = 0; + + return shaSuccess; +} + +/* + * SHA384_512ResultN + * + * Description: + * This helper function will return the 384-bit or 512-bit message + * digest into the Message_Digest array provided by the caller. + * NOTE: The first octet of hash is stored in the 0th element, + * the last octet of hash in the 48th/64th element. + * + * Parameters: + * context: [in/out] + * The context to use to calculate the SHA hash. + * Message_Digest: [out] + * Where the digest is returned. + * HashSize: [in] + * The size of the hash, either 48 or 64. + * + * Returns: + * sha Error Code. + * + */ +static int SHA384_512ResultN(SHA512Context *context, + uint8_t Message_Digest[], int HashSize) +{ + int i; + +#ifdef USE_32BIT_ONLY + int i2; +#endif /* USE_32BIT_ONLY */ + + if (!context || !Message_Digest) + return shaNull; + + if (context->Corrupted) + return context->Corrupted; + + if (!context->Computed) + SHA384_512Finalize(context, 0x80); + +#ifdef USE_32BIT_ONLY + for (i = i2 = 0; i < HashSize; ) { + Message_Digest[i++]=(uint8_t)(context->Intermediate_Hash[i2]>>24); + Message_Digest[i++]=(uint8_t)(context->Intermediate_Hash[i2]>>16); + Message_Digest[i++]=(uint8_t)(context->Intermediate_Hash[i2]>>8); + Message_Digest[i++]=(uint8_t)(context->Intermediate_Hash[i2++]); + Message_Digest[i++]=(uint8_t)(context->Intermediate_Hash[i2]>>24); + Message_Digest[i++]=(uint8_t)(context->Intermediate_Hash[i2]>>16); + Message_Digest[i++]=(uint8_t)(context->Intermediate_Hash[i2]>>8); + Message_Digest[i++]=(uint8_t)(context->Intermediate_Hash[i2++]); + } +#else /* !USE_32BIT_ONLY */ + for (i = 0; i < HashSize; ++i) + Message_Digest[i] = (uint8_t) + (context->Intermediate_Hash[i>>3] >> 8 * ( 7 - ( i % 8 ) )); +#endif /* USE_32BIT_ONLY */ + + return shaSuccess; +} diff --git a/imap/src/c-client/usha.c b/imap/src/c-client/usha.c new file mode 100644 index 00000000..3f49f45e --- /dev/null +++ b/imap/src/c-client/usha.c @@ -0,0 +1,255 @@ +/**************************** usha.c ****************************/ +/******************** See RFC 4634 for details ******************/ +/* + * Description: + * This file implements a unified interface to the SHA algorithms. + */ + +#include "sha.h" + +/* + * USHAReset + * + * Description: + * This function will initialize the SHA Context in preparation + * for computing a new SHA message digest. + * + * Parameters: + * context: [in/out] + * The context to reset. + * whichSha: [in] + * Selects which SHA reset to call + * + * Returns: + * sha Error Code. + * + */ +int USHAReset(USHAContext *ctx, enum SHAversion whichSha) +{ + if (ctx) { + ctx->whichSha = whichSha; + switch (whichSha) { + case CCSHA1: return SHA1Reset((SHA1Context*)&ctx->ctx); + case CCSHA224: return SHA224Reset((SHA224Context*)&ctx->ctx); + case CCSHA256: return SHA256Reset((SHA256Context*)&ctx->ctx); + case CCSHA384: return SHA384Reset((SHA384Context*)&ctx->ctx); + case CCSHA512: return SHA512Reset((SHA512Context*)&ctx->ctx); + default: return shaBadParam; + } + } else { + return shaNull; + } +} + +/* + * USHAInput + * + * Description: + * This function accepts an array of octets as the next portion + * of the message. + * + * Parameters: + * context: [in/out] + * The SHA context to update + * message_array: [in] + * An array of characters representing the next portion of + * the message. + * length: [in] + * The length of the message in message_array + * + * Returns: + * sha Error Code. + * + */ +int USHAInput(USHAContext *ctx, + const uint8_t *bytes, unsigned int bytecount) +{ + if (ctx) { + switch (ctx->whichSha) { + case CCSHA1: + return SHA1Input((SHA1Context*)&ctx->ctx, bytes, bytecount); + case CCSHA224: + return SHA224Input((SHA224Context*)&ctx->ctx, bytes, + bytecount); + case CCSHA256: + return SHA256Input((SHA256Context*)&ctx->ctx, bytes, + bytecount); + case CCSHA384: + return SHA384Input((SHA384Context*)&ctx->ctx, bytes, + bytecount); + case CCSHA512: + return SHA512Input((SHA512Context*)&ctx->ctx, bytes, + bytecount); + default: return shaBadParam; + } + } else { + return shaNull; + } +} + +/* + * USHAFinalBits + * + * Description: + * This function will add in any final bits of the message. + * + * Parameters: + * context: [in/out] + * The SHA context to update + * message_bits: [in] + * The final bits of the message, in the upper portion of the + * byte. (Use 0b###00000 instead of 0b00000### to input the + * three bits ###.) + * length: [in] + * The number of bits in message_bits, between 1 and 7. + * + * Returns: + * sha Error Code. + */ +int USHAFinalBits(USHAContext *ctx, + const uint8_t bits, unsigned int bitcount) +{ + if (ctx) { + switch (ctx->whichSha) { + case CCSHA1: + return SHA1FinalBits((SHA1Context*)&ctx->ctx, bits, bitcount); + case CCSHA224: + return SHA224FinalBits((SHA224Context*)&ctx->ctx, bits, + bitcount); + case CCSHA256: + return SHA256FinalBits((SHA256Context*)&ctx->ctx, bits, + bitcount); + case CCSHA384: + return SHA384FinalBits((SHA384Context*)&ctx->ctx, bits, + bitcount); + case CCSHA512: + return SHA512FinalBits((SHA512Context*)&ctx->ctx, bits, + bitcount); + default: return shaBadParam; + } + } else { + return shaNull; + } +} + +/* + * USHAResult + * + * Description: + * This function will return the 160-bit message digest into the + * Message_Digest array provided by the caller. + * NOTE: The first octet of hash is stored in the 0th element, + * the last octet of hash in the 19th element. + * + * Parameters: + * context: [in/out] + * The context to use to calculate the SHA-1 hash. + * Message_Digest: [out] + * Where the digest is returned. + * + * Returns: + * sha Error Code. + * + */ +int USHAResult(USHAContext *ctx, + uint8_t Message_Digest[USHAMaxHashSize]) +{ + if (ctx) { + switch (ctx->whichSha) { + case CCSHA1: + return SHA1Result((SHA1Context*)&ctx->ctx, Message_Digest); + case CCSHA224: + return SHA224Result((SHA224Context*)&ctx->ctx, Message_Digest); + case CCSHA256: + return SHA256Result((SHA256Context*)&ctx->ctx, Message_Digest); + case CCSHA384: + return SHA384Result((SHA384Context*)&ctx->ctx, Message_Digest); + case CCSHA512: + return SHA512Result((SHA512Context*)&ctx->ctx, Message_Digest); + default: return shaBadParam; + } + } else { + return shaNull; + } +} + +/* + * USHABlockSize + * + * Description: + * This function will return the blocksize for the given SHA + * algorithm. + * + * Parameters: + * whichSha: + * which SHA algorithm to query + * + * Returns: + * block size + * + */ +int USHABlockSize(enum SHAversion whichSha) +{ + switch (whichSha) { + case CCSHA1: return SHA1_Message_Block_Size; + case CCSHA224: return SHA224_Message_Block_Size; + case CCSHA256: return SHA256_Message_Block_Size; + case CCSHA384: return SHA384_Message_Block_Size; + default: + case CCSHA512: return SHA512_Message_Block_Size; + } +} + +/* + * USHAHashSize + * + * Description: + * This function will return the hashsize for the given SHA + * algorithm. + * + * Parameters: + * whichSha: + * which SHA algorithm to query + * + * Returns: + * hash size + * + */ +int USHAHashSize(enum SHAversion whichSha) +{ + switch (whichSha) { + case CCSHA1: return SHA1HashSize; + case CCSHA224: return SHA224HashSize; + case CCSHA256: return SHA256HashSize; + case CCSHA384: return SHA384HashSize; + default: + case CCSHA512: return SHA512HashSize; + } +} + +/* + * USHAHashSizeBits + * + * Description: + * This function will return the hashsize for the given SHA + * algorithm, expressed in bits. + * + * Parameters: + * whichSha: + * which SHA algorithm to query + * + * Returns: + * hash size in bits + * + */ +int USHAHashSizeBits(enum SHAversion whichSha) +{ + switch (whichSha) { + case CCSHA1: return SHA1HashSizeBits; + case CCSHA224: return SHA224HashSizeBits; + case CCSHA256: return SHA256HashSizeBits; + case CCSHA384: return SHA384HashSizeBits; + default: + case CCSHA512: return SHA512HashSizeBits; + } +} diff --git a/imap/src/osdep/nt/makefile.nt b/imap/src/osdep/nt/makefile.nt index 283d86a7..381fb82a 100644 --- a/imap/src/osdep/nt/makefile.nt +++ b/imap/src/osdep/nt/makefile.nt @@ -94,7 +94,7 @@ os_nt.obj: mail.h osdep.h env_nt.h fs.h ftl.h nl.h tcp.h tcp_nt.h yunchan.h \ os_nt.c fs_nt.c ftl_nt.c nl_nt.c env_nt.c ssl_nt.c ssl_none.c \ ip_nt.c tcp_nt.c yunchan.c pmatch.c write.c \ mailfile.h auth_md5.c auth_ntl.c auth_pla.c auth_bea.c auth_oa2.c \ - auth_log.c + auth_log.c sha.c mbxnt.obj: mail.h misc.h osdep.h mbxnt.c @@ -112,18 +112,20 @@ http.obj: mail.h misc.h http.h json.obj: mail.h misc.h json.h +sha.obj: mail.h misc.h osdep.h sha.h sha-private.h hash.h hmac.c sha1.c sha224-256.c sha384-512.c usha.c + $(CCLIENTLIB): mail.obj misc.obj fdstring.obj flstring.obj netmsg.obj \ newsrc.obj rfc822.obj smanager.obj utf8.obj utf8aux.obj \ imap4r1.obj nntp.obj pop3.obj smtp.obj os_nt.obj http.obj json.obj \ mbxnt.obj mtxnt.obj tenexnt.obj unixnt.obj dummynt.obj pseudo.obj \ - http.obj json.obj + http.obj json.obj sha.obj if exist $(CCLIENTLIB) del $(CCLIENTLIB) LIB /NOLOGO /OUT:cclient.lib \ mail.obj misc.obj fdstring.obj flstring.obj netmsg.obj \ newsrc.obj rfc822.obj smanager.obj utf8.obj utf8aux.obj \ imap4r1.obj nntp.obj pop3.obj smtp.obj os_nt.obj \ mbxnt.obj mtxnt.obj tenexnt.obj unixnt.obj dummynt.obj pseudo.obj \ - http.obj json.obj + http.obj json.obj sha.obj clean: del *.lib *.obj linkage.* osdep.* ip_nt.c auths.c *.exe *.exp || rem diff --git a/imap/src/osdep/nt/makefile.ntk b/imap/src/osdep/nt/makefile.ntk index 52b68d9f..4796d6f5 100644 --- a/imap/src/osdep/nt/makefile.ntk +++ b/imap/src/osdep/nt/makefile.ntk @@ -91,7 +91,7 @@ os_ntk.obj: mail.h osdep.h env_nt.h fs.h ftl.h nl.h tcp.h tcp_nt.h yunchan.h \ os_ntk.c fs_nt.c ftl_nt.c nl_nt.c env_nt.c ssl_nt.c ssl_none.c \ ip_nt.c tcp_nt.c yunchan.c pmatch.c write.c \ mailfile.h auth_gss.c auth_md5.c auth_ntl.c auth_pla.c auth_bea.c \ - auth_oa2 auth_log.c kerb_mit.c + auth_oa2 auth_log.c kerb_mit.c sha.c mbxnt.obj: mail.h misc.h osdep.h mbxnt.c @@ -109,18 +109,20 @@ http.obj: mail.h misc.h http.h json.obj: mail.h misc.h json.h +sha.obj: mail.h misc.h osdep.h sha.h sha-private.h hash.h hmac.c sha1.c sha224-256.c sha384-512.c usha.c + $(CCLIENTLIB): mail.obj misc.obj fdstring.obj flstring.obj netmsg.obj \ newsrc.obj rfc822.obj smanager.obj utf8.obj utf8aux.obj \ imap4r1.obj nntp.obj pop3.obj smtp.obj os_ntk.obj \ mbxnt.obj mtxnt.obj tenexnt.obj unixnt.obj dummynt.obj pseudo.obj \ - http.obj json.obj + http.obj json.obj sha.obj if exist $(CCLIENTLIB) del $(CCLIENTLIB) LIB /NOLOGO /OUT:cclient.lib \ mail.obj misc.obj fdstring.obj flstring.obj netmsg.obj \ newsrc.obj rfc822.obj smanager.obj utf8.obj utf8aux.obj \ imap4r1.obj nntp.obj pop3.obj smtp.obj os_ntk.obj \ mbxnt.obj mtxnt.obj tenexnt.obj unixnt.obj dummynt.obj pseudo.obj \ - http.obj json.obj + http.obj json.obj sha.obj clean: del *.lib *.obj linkage.* osdep.* ip_nt.c auths.c *.exe *.exp || rem diff --git a/imap/src/osdep/nt/makefile.w2k b/imap/src/osdep/nt/makefile.w2k index 9da6b452..214ee2dc 100644 --- a/imap/src/osdep/nt/makefile.w2k +++ b/imap/src/osdep/nt/makefile.w2k @@ -91,7 +91,7 @@ os_w2k.obj: mail.h osdep.h env_nt.h fs.h ftl.h nl.h tcp.h tcp_nt.h yunchan.h \ os_w2k.c fs_nt.c ftl_nt.c nl_nt.c env_nt.c ssl_w2k.c ssl_none.c \ ip_nt.c tcp_nt.c yunchan.c pmatch.c write.c \ mailfile.h auth_gss.c auth_md5.c auth_ntl.c auth_pla.c auth_bea.c \ - auth_oa2.c auth_log.c kerb_w2k.c + auth_oa2.c auth_log.c kerb_w2k.c sha.c mbxnt.obj: mail.h misc.h osdep.h mbxnt.c @@ -109,18 +109,20 @@ http.obj: mail.h misc.h http.h json.obj: mail.h misc.h json.h +sha.obj: mail.h misc.h osdep.h sha.h sha-private.h hash.h hmac.c sha1.c sha224-256.c sha384-512.c usha.c + $(CCLIENTLIB): mail.obj misc.obj fdstring.obj flstring.obj netmsg.obj \ newsrc.obj rfc822.obj smanager.obj utf8.obj utf8aux.obj \ imap4r1.obj nntp.obj pop3.obj smtp.obj os_w2k.obj \ mbxnt.obj mtxnt.obj tenexnt.obj unixnt.obj dummynt.obj pseudo.obj \ - http.obj json.obj + http.obj json.obj sha.obj if exist $(CCLIENTLIB) del $(CCLIENTLIB) LIB /NOLOGO /OUT:cclient.lib \ mail.obj misc.obj fdstring.obj flstring.obj netmsg.obj \ newsrc.obj rfc822.obj smanager.obj utf8.obj utf8aux.obj \ imap4r1.obj nntp.obj pop3.obj smtp.obj os_w2k.obj \ mbxnt.obj mtxnt.obj tenexnt.obj unixnt.obj dummynt.obj pseudo.obj \ - http.obj json.obj + http.obj json.obj sha.obj clean: del *.lib *.obj linkage.* osdep.* ip_nt.c auths.c *.exe *.exp || rem diff --git a/imap/src/osdep/unix/Makefile b/imap/src/osdep/unix/Makefile index b940d4ad..249d324c 100644 --- a/imap/src/osdep/unix/Makefile +++ b/imap/src/osdep/unix/Makefile @@ -155,7 +155,7 @@ ARCHIVE=c-client.a BINARIES=osdep.o mail.o misc.o newsrc.o smanager.o utf8.o utf8aux.o siglocal.o \ dummy.o pseudo.o netmsg.o flstring.o fdstring.o \ rfc822.o nntp.o smtp.o imap4r1.o http.o json.o pop3.o \ - unix.o mbx.o mmdf.o tenex.o mtx.o news.o phile.o mh.o mx.o mix.o + unix.o mbx.o mmdf.o tenex.o mtx.o news.o phile.o mh.o mx.o mix.o sha.o CFLAGS=-g CAT=cat @@ -921,6 +921,7 @@ utf8.o: mail.h misc.h osdep.h utf8.h tmap.c widths.c utf8aux.o: mail.h misc.h osdep.h utf8.h json.o: mail.h misc.h osdep.h utf8.h json.h http.o: mail.h misc.h osdep.h utf8.h http.h json.h +sha.o: mail.h misc.h osdep.h sha.h sha-private.h hash.h hmac.c sha1.c sha224-256.c sha384-512.c usha.c # OS-dependent |