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| author | Paul R. Eggert <eggert@cs.ucla.edu> | 2010-07-20 09:50:37 -0700 |
|---|---|---|
| committer | Paul Eggert <eggert@cs.ucla.edu> | 2010-07-20 09:51:12 -0700 |
| commit | c1d8e6e458c2f9deb3013538d6db8da8f7f4e9f1 (patch) | |
| tree | 8b541824476fa9f641b11ab89d89a3ebf3743aac /gl/lib/rand-isaac.h | |
| parent | e5444fa2a7a2ad4246e7a5e961d5c4aad2aecbe9 (diff) | |
| download | coreutils-c1d8e6e458c2f9deb3013538d6db8da8f7f4e9f1.tar.xz | |
randread: use /dev/urandom to seed, not just getpid etc
* gl/lib/rand-isaac.c (isaac_seed_start): New arg SEEDED.
(isaac_seed): New args FD and BYTES_BOUND. Read from FD if possible.
Don't bother with low-quality sources if FD has enough bytes.
* gl/lib/rand-isaac.h: New size_t arg for isaac_seed.
* gl/lib/randread.c: Include fcntl.h, unistd.h.
(NAME_OF_NONCE_DEVICE): New #define.
(nonce_device): New static var.
(randread_new): Use nonce device if available.
Diffstat (limited to 'gl/lib/rand-isaac.h')
| -rw-r--r-- | gl/lib/rand-isaac.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/gl/lib/rand-isaac.h b/gl/lib/rand-isaac.h index 6559dc8fe..052dc9f3a 100644 --- a/gl/lib/rand-isaac.h +++ b/gl/lib/rand-isaac.h @@ -21,6 +21,7 @@ #ifndef RAND_ISAAC_H # define RAND_ISAAC_H +# include <stddef.h> # include <stdint.h> /* Size of the state tables to use. ISAAC_LOG should be at least 3, @@ -37,7 +38,7 @@ struct isaac_state uint32_t a, b, c; /* Extra index variables */ }; -void isaac_seed (struct isaac_state *); +void isaac_seed (struct isaac_state *, int, size_t); void isaac_refill (struct isaac_state *, uint32_t[ISAAC_WORDS]); #endif |