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Diffstat (limited to 'libressl/libressl/include/openssl/dsa.h')
| -rw-r--r-- | libressl/libressl/include/openssl/dsa.h | 339 |
1 files changed, 339 insertions, 0 deletions
diff --git a/libressl/libressl/include/openssl/dsa.h b/libressl/libressl/include/openssl/dsa.h new file mode 100644 index 0000000..61bfc2b --- /dev/null +++ b/libressl/libressl/include/openssl/dsa.h @@ -0,0 +1,339 @@ +/* $OpenBSD: dsa.h,v 1.30 2018/03/17 15:19:12 tb Exp $ */ +/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) + * All rights reserved. + * + * This package is an SSL implementation written + * by Eric Young (eay@cryptsoft.com). + * The implementation was written so as to conform with Netscapes SSL. + * + * This library is free for commercial and non-commercial use as long as + * the following conditions are aheared to. The following conditions + * apply to all code found in this distribution, be it the RC4, RSA, + * lhash, DES, etc., code; not just the SSL code. The SSL documentation + * included with this distribution is covered by the same copyright terms + * except that the holder is Tim Hudson (tjh@cryptsoft.com). + * + * Copyright remains Eric Young's, and as such any Copyright notices in + * the code are not to be removed. + * If this package is used in a product, Eric Young should be given attribution + * as the author of the parts of the library used. + * This can be in the form of a textual message at program startup or + * in documentation (online or textual) provided with the package. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * "This product includes cryptographic software written by + * Eric Young (eay@cryptsoft.com)" + * The word 'cryptographic' can be left out if the rouines from the library + * being used are not cryptographic related :-). + * 4. If you include any Windows specific code (or a derivative thereof) from + * the apps directory (application code) you must include an acknowledgement: + * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" + * + * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * The licence and distribution terms for any publically available version or + * derivative of this code cannot be changed. i.e. this code cannot simply be + * copied and put under another distribution licence + * [including the GNU Public Licence.] + */ + +/* + * The DSS routines are based on patches supplied by + * Steven Schoch <schoch@sheba.arc.nasa.gov>. He basically did the + * work and I have just tweaked them a little to fit into my + * stylistic vision for SSLeay :-) */ + +#ifndef HEADER_DSA_H +#define HEADER_DSA_H + +#include <openssl/opensslconf.h> + +#ifdef OPENSSL_NO_DSA +#error DSA is disabled. +#endif + +#ifndef OPENSSL_NO_BIO +#include <openssl/bio.h> +#endif +#include <openssl/crypto.h> +#include <openssl/ossl_typ.h> + +#ifndef OPENSSL_NO_DEPRECATED +#include <openssl/bn.h> +#ifndef OPENSSL_NO_DH +# include <openssl/dh.h> +#endif +#endif + +#ifndef OPENSSL_DSA_MAX_MODULUS_BITS +# define OPENSSL_DSA_MAX_MODULUS_BITS 10000 +#endif + +#define DSA_FLAG_CACHE_MONT_P 0x01 + +/* If this flag is set the DSA method is FIPS compliant and can be used + * in FIPS mode. This is set in the validated module method. If an + * application sets this flag in its own methods it is its reposibility + * to ensure the result is compliant. + */ + +#define DSA_FLAG_FIPS_METHOD 0x0400 + +/* If this flag is set the operations normally disabled in FIPS mode are + * permitted it is then the applications responsibility to ensure that the + * usage is compliant. + */ + +#define DSA_FLAG_NON_FIPS_ALLOW 0x0400 + +#ifdef __cplusplus +extern "C" { +#endif + +/* Already defined in ossl_typ.h */ +/* typedef struct dsa_st DSA; */ +/* typedef struct dsa_method DSA_METHOD; */ + +typedef struct DSA_SIG_st + { + BIGNUM *r; + BIGNUM *s; + } DSA_SIG; + +struct dsa_method + { + const char *name; + DSA_SIG * (*dsa_do_sign)(const unsigned char *dgst, int dlen, DSA *dsa); + int (*dsa_sign_setup)(DSA *dsa, BN_CTX *ctx_in, BIGNUM **kinvp, + BIGNUM **rp); + int (*dsa_do_verify)(const unsigned char *dgst, int dgst_len, + DSA_SIG *sig, DSA *dsa); + int (*dsa_mod_exp)(DSA *dsa, BIGNUM *rr, BIGNUM *a1, BIGNUM *p1, + BIGNUM *a2, BIGNUM *p2, BIGNUM *m, BN_CTX *ctx, + BN_MONT_CTX *in_mont); + int (*bn_mod_exp)(DSA *dsa, BIGNUM *r, BIGNUM *a, const BIGNUM *p, + const BIGNUM *m, BN_CTX *ctx, + BN_MONT_CTX *m_ctx); /* Can be null */ + int (*init)(DSA *dsa); + int (*finish)(DSA *dsa); + int flags; + char *app_data; + /* If this is non-NULL, it is used to generate DSA parameters */ + int (*dsa_paramgen)(DSA *dsa, int bits, + const unsigned char *seed, int seed_len, + int *counter_ret, unsigned long *h_ret, + BN_GENCB *cb); + /* If this is non-NULL, it is used to generate DSA keys */ + int (*dsa_keygen)(DSA *dsa); + }; + +struct dsa_st + { + /* This first variable is used to pick up errors where + * a DSA is passed instead of of a EVP_PKEY */ + int pad; + long version; + int write_params; + BIGNUM *p; + BIGNUM *q; /* == 20 */ + BIGNUM *g; + + BIGNUM *pub_key; /* y public key */ + BIGNUM *priv_key; /* x private key */ + + BIGNUM *kinv; /* Signing pre-calc */ + BIGNUM *r; /* Signing pre-calc */ + + int flags; + /* Normally used to cache montgomery values */ + BN_MONT_CTX *method_mont_p; + int references; + CRYPTO_EX_DATA ex_data; + const DSA_METHOD *meth; + /* functional reference if 'meth' is ENGINE-provided */ + ENGINE *engine; + }; + +DSA *d2i_DSAparams_bio(BIO *bp, DSA **a); +int i2d_DSAparams_bio(BIO *bp, DSA *a); +DSA *d2i_DSAparams_fp(FILE *fp, DSA **a); +int i2d_DSAparams_fp(FILE *fp, DSA *a); + +DSA *DSAparams_dup(DSA *x); +DSA_SIG * DSA_SIG_new(void); +void DSA_SIG_free(DSA_SIG *a); +int i2d_DSA_SIG(const DSA_SIG *a, unsigned char **pp); +DSA_SIG * d2i_DSA_SIG(DSA_SIG **v, const unsigned char **pp, long length); +void DSA_SIG_get0(const DSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps); +int DSA_SIG_set0(DSA_SIG *sig, BIGNUM *r, BIGNUM *s); + +DSA_SIG * DSA_do_sign(const unsigned char *dgst,int dlen,DSA *dsa); +int DSA_do_verify(const unsigned char *dgst,int dgst_len, + DSA_SIG *sig,DSA *dsa); + +const DSA_METHOD *DSA_OpenSSL(void); + +void DSA_set_default_method(const DSA_METHOD *); +const DSA_METHOD *DSA_get_default_method(void); +int DSA_set_method(DSA *dsa, const DSA_METHOD *); + +DSA * DSA_new(void); +DSA * DSA_new_method(ENGINE *engine); +void DSA_free(DSA *r); +/* "up" the DSA object's reference count */ +int DSA_up_ref(DSA *r); +int DSA_size(const DSA *); + /* next 4 return -1 on error */ +int DSA_sign_setup( DSA *dsa,BN_CTX *ctx_in,BIGNUM **kinvp,BIGNUM **rp); +int DSA_sign(int type,const unsigned char *dgst,int dlen, + unsigned char *sig, unsigned int *siglen, DSA *dsa); +int DSA_verify(int type,const unsigned char *dgst,int dgst_len, + const unsigned char *sigbuf, int siglen, DSA *dsa); +int DSA_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, + CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func); +int DSA_set_ex_data(DSA *d, int idx, void *arg); +void *DSA_get_ex_data(DSA *d, int idx); + +DSA *d2i_DSAPublicKey(DSA **a, const unsigned char **pp, long length); +int i2d_DSAPublicKey(const DSA *a, unsigned char **pp); +extern const ASN1_ITEM DSAPublicKey_it; + +DSA *d2i_DSAPrivateKey(DSA **a, const unsigned char **pp, long length); +int i2d_DSAPrivateKey(const DSA *a, unsigned char **pp); +extern const ASN1_ITEM DSAPrivateKey_it; + +DSA *d2i_DSAparams(DSA **a, const unsigned char **pp, long length); +int i2d_DSAparams(const DSA *a,unsigned char **pp); +extern const ASN1_ITEM DSAparams_it; + +/* Deprecated version */ +#ifndef OPENSSL_NO_DEPRECATED +DSA * DSA_generate_parameters(int bits, + unsigned char *seed,int seed_len, + int *counter_ret, unsigned long *h_ret,void + (*callback)(int, int, void *),void *cb_arg); +#endif /* !defined(OPENSSL_NO_DEPRECATED) */ + +/* New version */ +int DSA_generate_parameters_ex(DSA *dsa, int bits, + const unsigned char *seed,int seed_len, + int *counter_ret, unsigned long *h_ret, BN_GENCB *cb); + +int DSA_generate_key(DSA *a); + +#ifndef OPENSSL_NO_BIO +int DSAparams_print(BIO *bp, const DSA *x); +int DSA_print(BIO *bp, const DSA *x, int off); +#endif +int DSAparams_print_fp(FILE *fp, const DSA *x); +int DSA_print_fp(FILE *bp, const DSA *x, int off); + +#define DSS_prime_checks 50 +/* Primality test according to FIPS PUB 186[-1], Appendix 2.1: + * 50 rounds of Rabin-Miller */ +#define DSA_is_prime(n, callback, cb_arg) \ + BN_is_prime(n, DSS_prime_checks, callback, NULL, cb_arg) + +#ifndef OPENSSL_NO_DH +/* Convert DSA structure (key or just parameters) into DH structure + * (be careful to avoid small subgroup attacks when using this!) */ +DH *DSA_dup_DH(const DSA *r); +#endif + +void DSA_get0_pqg(const DSA *d, const BIGNUM **p, const BIGNUM **q, + const BIGNUM **g); +int DSA_set0_pqg(DSA *d, BIGNUM *p, BIGNUM *q, BIGNUM *g); +void DSA_get0_key(const DSA *d, const BIGNUM **pub_key, const BIGNUM **priv_key); +int DSA_set0_key(DSA *d, BIGNUM *pub_key, BIGNUM *priv_key); +void DSA_clear_flags(DSA *d, int flags); +int DSA_test_flags(const DSA *d, int flags); +void DSA_set_flags(DSA *d, int flags); +ENGINE *DSA_get0_engine(DSA *d); + +DSA_METHOD *DSA_meth_new(const char *name, int flags); +void DSA_meth_free(DSA_METHOD *meth); +DSA_METHOD *DSA_meth_dup(const DSA_METHOD *meth); +int DSA_meth_set_sign(DSA_METHOD *meth, + DSA_SIG *(*sign)(const unsigned char *, int, DSA *)); +int DSA_meth_set_finish(DSA_METHOD *meth, int (*finish)(DSA *)); + +#define EVP_PKEY_CTX_set_dsa_paramgen_bits(ctx, nbits) \ + EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DSA, EVP_PKEY_OP_PARAMGEN, \ + EVP_PKEY_CTRL_DSA_PARAMGEN_BITS, nbits, NULL) + +#define EVP_PKEY_CTRL_DSA_PARAMGEN_BITS (EVP_PKEY_ALG_CTRL + 1) +#define EVP_PKEY_CTRL_DSA_PARAMGEN_Q_BITS (EVP_PKEY_ALG_CTRL + 2) +#define EVP_PKEY_CTRL_DSA_PARAMGEN_MD (EVP_PKEY_ALG_CTRL + 3) + +/* BEGIN ERROR CODES */ +/* The following lines are auto generated by the script mkerr.pl. Any changes + * made after this point may be overwritten when the script is next run. + */ +void ERR_load_DSA_strings(void); + +/* Error codes for the DSA functions. */ + +/* Function codes. */ +#define DSA_F_D2I_DSA_SIG 110 +#define DSA_F_DO_DSA_PRINT 104 +#define DSA_F_DSAPARAMS_PRINT 100 +#define DSA_F_DSAPARAMS_PRINT_FP 101 +#define DSA_F_DSA_DO_SIGN 112 +#define DSA_F_DSA_DO_VERIFY 113 +#define DSA_F_DSA_GENERATE_KEY 124 +#define DSA_F_DSA_GENERATE_PARAMETERS_EX 123 +#define DSA_F_DSA_NEW_METHOD 103 +#define DSA_F_DSA_PARAM_DECODE 119 +#define DSA_F_DSA_PRINT_FP 105 +#define DSA_F_DSA_PRIV_DECODE 115 +#define DSA_F_DSA_PRIV_ENCODE 116 +#define DSA_F_DSA_PUB_DECODE 117 +#define DSA_F_DSA_PUB_ENCODE 118 +#define DSA_F_DSA_SIGN 106 +#define DSA_F_DSA_SIGN_SETUP 107 +#define DSA_F_DSA_SIG_NEW 109 +#define DSA_F_DSA_SIG_PRINT 125 +#define DSA_F_DSA_VERIFY 108 +#define DSA_F_I2D_DSA_SIG 111 +#define DSA_F_OLD_DSA_PRIV_DECODE 122 +#define DSA_F_PKEY_DSA_CTRL 120 +#define DSA_F_PKEY_DSA_KEYGEN 121 +#define DSA_F_SIG_CB 114 + +/* Reason codes. */ +#define DSA_R_BAD_Q_VALUE 102 +#define DSA_R_BN_DECODE_ERROR 108 +#define DSA_R_BN_ERROR 109 +#define DSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE 100 +#define DSA_R_DECODE_ERROR 104 +#define DSA_R_INVALID_DIGEST_TYPE 106 +#define DSA_R_MISSING_PARAMETERS 101 +#define DSA_R_MODULUS_TOO_LARGE 103 +#define DSA_R_NEED_NEW_SETUP_VALUES 110 +#define DSA_R_NON_FIPS_DSA_METHOD 111 +#define DSA_R_NO_PARAMETERS_SET 107 +#define DSA_R_PARAMETER_ENCODING_ERROR 105 + +#ifdef __cplusplus +} +#endif +#endif |