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Fix tls_prf bug introduced with bc474883

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This commit is contained in:
Martin Willi
2012-07-17 11:33:05 +02:00
parent 964de0abde
commit 2df12b4c57
1 changed files with 7 additions and 4 deletions
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src/libtls/tls_prf.c
+7 -4
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@@ -55,11 +55,14 @@ static bool p_hash(prf_t *prf, char *label, chunk_t seed, size_t block_size,
while (TRUE)
{
/* A(i) = HMAC_hash(secret, A(i-1)) */
if (!prf->get_bytes(prf, a, abuf))
{
return FALSE;
}
a = chunk_from_thing(abuf);
/* A(i) = HMAC_hash(secret, A(i-1))
* HMAC_hash(secret, A(i) + seed) */
if (!prf->get_bytes(prf, a, abuf) ||
!prf->get_bytes(prf, a, NULL) ||
/* HMAC_hash(secret, A(i) + seed) */
if (!prf->get_bytes(prf, a, NULL) ||
!prf->get_bytes(prf, seed, buf))
{
return FALSE;