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Convert sha1b64s_parse_hash() to make use of input_tokenizer()

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This commit is contained in:
jsteube 2018-06-30 10:51:21 +02:00
parent 384fe1ba15
commit 06a34bd026
2 changed files with 44 additions and 21 deletions
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2
include/interface.h
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@ -1295,8 +1295,6 @@ typedef enum display_len
DISPLAY_LEN_MAX_12 = 32 + 1 + 32,
DISPLAY_LEN_MIN_23 = 32 + 1 + 0,
DISPLAY_LEN_MAX_23 = 32 + 1 + SALT_MAX,
DISPLAY_LEN_MIN_111 = 6 + 28 + 1,
DISPLAY_LEN_MAX_111 = 6 + 28 + SALT_MAX,
DISPLAY_LEN_MIN_112 = 40 + 1 + 20,
DISPLAY_LEN_MAX_112 = 40 + 1 + 20,
DISPLAY_LEN_MIN_122 = 8 + 40,

63
src/interface.c
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@ -5432,34 +5432,43 @@ int sha1b64_parse_hash (u8 *input_buf, u32 input_len, hash_t *hash_buf, MAYBE_UN
int sha1b64s_parse_hash (u8 *input_buf, u32 input_len, hash_t *hash_buf, MAYBE_UNUSED hashconfig_t *hashconfig)
{
if ((input_len < DISPLAY_LEN_MIN_111) || (input_len > DISPLAY_LEN_MAX_111)) return (PARSER_GLOBAL_LENGTH);
if ((memcmp (SIGNATURE_SSHA1B64_lower, input_buf, 6) != 0) && (memcmp (SIGNATURE_SSHA1B64_upper, input_buf, 6) != 0)) return (PARSER_SIGNATURE_UNMATCHED);
u32 *digest = (u32 *) hash_buf->digest;
salt_t *salt = hash_buf->salt;
u8 tmp_buf[100] = { 0 };
token_t token;
const int tmp_len = base64_decode (base64_to_int, (const u8 *) input_buf + 6, input_len - 6, tmp_buf);
token.token_cnt = 2;
token.signatures_cnt = 2;
token.signatures_buf[0] = SIGNATURE_SSHA1B64_lower;
token.signatures_buf[0] = SIGNATURE_SSHA1B64_upper;
token.len[0] = 6;
token.attr[0] = TOKEN_ATTR_FIXED_LENGTH
| TOKEN_ATTR_VERIFY_SIGNATURE;
token.len_min[1] = 28;
token.len_max[1] = 368; // 368 = 20 + 256 where 20 is digest length and 256 is SALT_MAX
token.attr[1] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_BASE64A;
const int rc_tokenizer = input_tokenizer (input_buf, input_len, &token);
if (rc_tokenizer != PARSER_OK) return (rc_tokenizer);
u8 *hashsalt_pos = token.buf[1];
int hashsalt_len = token.len[1];
u8 tmp_buf[512] = { 0 };
const int tmp_len = base64_decode (base64_to_int, hashsalt_pos, hashsalt_len, tmp_buf);
if (tmp_len < 20) return (PARSER_HASH_LENGTH);
memcpy (digest, tmp_buf, 20);
u8 *hash_pos = tmp_buf;
const int salt_len = tmp_len - 20;
salt->salt_len = salt_len;
memcpy (salt->salt_buf, tmp_buf + 20, salt->salt_len);
if (hashconfig->opts_type & OPTS_TYPE_ST_ADD80)
{
u8 *ptr = (u8 *) salt->salt_buf;
ptr[salt->salt_len] = 0x80;
}
memcpy (digest, hash_pos, 20);
digest[0] = byte_swap_32 (digest[0]);
digest[1] = byte_swap_32 (digest[1]);
@ -5476,6 +5485,22 @@ int sha1b64s_parse_hash (u8 *input_buf, u32 input_len, hash_t *hash_buf, MAYBE_U
digest[4] -= SHA1M_E;
}
// salt
u8 *salt_pos = tmp_buf + 20;
int salt_len = tmp_len - 20;
salt->salt_len = salt_len;
memcpy (salt->salt_buf, salt_pos, salt_len);
if (hashconfig->opts_type & OPTS_TYPE_ST_ADD80)
{
u8 *ptr = (u8 *) salt->salt_buf;
ptr[salt_len] = 0x80;
}
return (PARSER_OK);
}