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Big thanks to Solar Designer who pointed out a bug in bcrypt

Browse Source 
salt generation code.  He also urged using better random source
and making possible to choose using bcrypt and xdes rounds more
easily.  So, here's patch:

* For all salt generation, use Solar Designer's own code.  This
  is mostly due fact that his code is more fit for get_random_bytes()
  style interface.
* New function: gen_salt(type, rounds).  This lets specify iteration
  count for algorithm.
* random.c: px_get_random_bytes() function.
  Supported randomness soure: /dev/urandom, OpenSSL PRNG, libc random()
  Default: /dev/urandom.
* Draft description of C API for pgcrypto functions.

New files: API, crypt-gensalt.c, random.c

Marko Kreen
This commit is contained in:
Bruce Momjian
2001-09-23 04:12:44 +00:00
parent b75814aee3
commit ab56022864
13 changed files with 627 additions and 134 deletions
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25
contrib/pgcrypto/crypt-blowfish.c
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@ -705,28 +705,3 @@ char *_crypt_blowfish_rn(__CONST char *key, __CONST char *setting,
return output;
}
char *_crypt_gensalt_blowfish_rn(unsigned long count,
__CONST char *input, int size, char *output, int output_size)
{
if (size < 16 || output_size < 7 + 22 + 1 ||
(count && (count < 4 || count > 31))) {
if (output_size > 0) output[0] = '\0';
__set_errno((output_size < 7 + 22 + 1) ? ERANGE : EINVAL);
return NULL;
}
if (!count) count = 5;
output[0] = '$';
output[1] = '2';
output[2] = 'a';
output[3] = '$';
output[4] = '0' + count / 10;
output[5] = '0' + count % 10;
output[6] = '$';
BF_encode(&output[7], (BF_word *)input, 16);
output[7 + 22] = '\0';
return output;
}