/*
Psuedo-random function. TLS uses this for key generation and hashing
*/
int32 prf2(unsigned char *sec, uint32 secLen, unsigned char *seed,
uint32 seedLen, unsigned char *out, uint32 outLen, uint32 flags)
{
unsigned char sha2out[SSL_MAX_KEY_BLOCK_SIZE];
uint32 i;
psAssert(outLen <= SSL_MAX_KEY_BLOCK_SIZE);
pSha2(sec, secLen, seed, seedLen, sha2out, outLen, flags);
for (i = 0; i < outLen; i++) {
out[i] = sha2out[i];
}
return outLen;
}
/*
Psuedo-random function. TLS uses this for key generation and hashing
*/
int32_t prf2(const unsigned char *sec, uint16_t secLen,
const unsigned char *seed, uint16_t seedLen,
unsigned char *out, uint16_t outLen, uint32_t flags)
{
unsigned char sha2out[SSL_MAX_KEY_BLOCK_SIZE];
int32_t rc;
uint16_t i;
psAssert(outLen <= SSL_MAX_KEY_BLOCK_SIZE);
if ((rc = pSha2(sec, secLen, seed, seedLen, sha2out, outLen, flags)) < 0) {
return rc;
}
/* Copy out of tmp buffer because outLen typically less than multiple of
prf block size */
for (i = 0; i < outLen; i++) {
out[i] = sha2out[i];
}
memzero_s(sha2out, SSL_MAX_KEY_BLOCK_SIZE);
return outLen;
}
