diff options
Diffstat (limited to 'libar2_hash_buf_size.c')
| -rw-r--r-- | libar2_hash_buf_size.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/libar2_hash_buf_size.c b/libar2_hash_buf_size.c index b165d4b..109969f 100644 --- a/libar2_hash_buf_size.c +++ b/libar2_hash_buf_size.c @@ -5,5 +5,11 @@ size_t libar2_hash_buf_size(struct libar2_argon2_parameters *params) { - return (params->hashlen > 64 && (params->hashlen & 127)) ? (params->hashlen | 127) + 1 : params->hashlen; + if (params->hashlen <= 64) + return params->hashlen; + if (params->hashlen > SIZE_MAX / 128 * 64 - 31) { + errno = EOVERFLOW; + return 0; + } + return (params->hashlen + 31) / 64 * 128; } |