diff options
author | Bodo Möller <bodo@openssl.org> | 2000-01-22 23:11:13 +0000 |
---|---|---|
committer | Bodo Möller <bodo@openssl.org> | 2000-01-22 23:11:13 +0000 |
commit | c88a900fa1348a47d69a13da7bb1205178a3472d (patch) | |
tree | e7a200dcecb30705d754235f4b21e2535599b0ff /crypto/rand/md_rand.c | |
parent | 2a99e8b9df536df9f87fb3a6997ac42383787cf1 (diff) |
update PRNG documentation/comments
Diffstat (limited to 'crypto/rand/md_rand.c')
-rw-r--r-- | crypto/rand/md_rand.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/crypto/rand/md_rand.c b/crypto/rand/md_rand.c index 2836a4d409..88095b109d 100644 --- a/crypto/rand/md_rand.c +++ b/crypto/rand/md_rand.c @@ -186,7 +186,7 @@ static void ssleay_rand_add(const void *buf, int num, int add) /* * (Based on the rand(3) manpage) * - * The input is chopped up into units of 16 bytes (or less for + * The input is chopped up into units of 20 bytes (or less for * the last block). Each of these blocks is run through the hash * function as follows: The data passed to the hash function * is the current 'md', the same number of bytes from the 'state' @@ -324,13 +324,15 @@ static int ssleay_rand_bytes(unsigned char *buf, int num) /* * (Based on the rand(3) manpage:) * - * For each group of 8 bytes (or less), we do the following: + * For each group of 10 bytes (or less), we do the following: * - * Input into the hash function the top 8 bytes from 'md', the bytes - * that are to be overwritten by the random bytes, and bytes from the + * Input into the hash function the top 10 bytes from the + * local 'md' (which is initialized from the global 'md' + * before any bytes are generated), the bytes that are + * to be overwritten by the random bytes, and bytes from the * 'state' (incrementing looping index). From this digest output - * (which is kept in 'md'), the top (upto) 8 bytes are - * returned to the caller and the bottom (upto) 8 bytes are xored + * (which is kept in 'md'), the top (up to) 10 bytes are + * returned to the caller and the bottom (up to) 10 bytes are xored * into the 'state'. * Finally, after we have finished 'num' random bytes for the * caller, 'count' (which is incremented) and the local and global 'md' |