int c1s1::calc_c1_digest(char*& digest)
{
int ret = ERROR_SUCCESS;
srs_assert(schema == srs_schema0 || schema == srs_schema1);
char* c1s1_joined_bytes = NULL;
if (schema == srs_schema0) {
c1s1_joined_bytes = srs_bytes_join_schema0(time, version, &block0.key, &block1.digest);
} else {
c1s1_joined_bytes = srs_bytes_join_schema1(time, version, &block0.digest, &block1.key);
}
srs_assert(c1s1_joined_bytes != NULL);
SrsAutoFree(char, c1s1_joined_bytes);
digest = new char[__SRS_OpensslHashSize];
if ((ret = openssl_HMACsha256(c1s1_joined_bytes, 1536 - 32, SrsGenuineFPKey, 30, digest)) != ERROR_SUCCESS) {
srs_error("calc digest for c1 failed. ret=%d", ret);
return ret;
}
srs_verbose("digest calculated for c1");
return ret;
}
int c2s2::s2_create(c1s1* c1)
{
int ret = ERROR_SUCCESS;
char temp_key[__SRS_OpensslHashSize];
if ((ret = openssl_HMACsha256(c1->get_digest(), 32, SrsGenuineFMSKey, 68, temp_key)) != ERROR_SUCCESS) {
srs_error("create s2 temp key failed. ret=%d", ret);
return ret;
}
srs_verbose("generate s2 temp key success.");
char _digest[__SRS_OpensslHashSize];
if ((ret = openssl_HMACsha256(random, 1504, temp_key, 32, _digest)) != ERROR_SUCCESS) {
srs_error("create s2 digest failed. ret=%d", ret);
return ret;
}
srs_verbose("generate s2 digest success.");
memcpy(digest, _digest, 32);
return ret;
}
int c2s2::c2_create(c1s1 *s1)
{
int ret = ERROR_SUCCESS;
char temp_key[OpensslHashSize];
if ((ret = openssl_HMACsha256(s1->get_digest(), 32, SrsGenuineFPKey, 62, temp_key)) != ERROR_SUCCESS) {
log_error("create c2 temp key failed. ret=%d", ret);
return ret;
}
log_verbose("generate c2 temp key success.");
char _digest[OpensslHashSize];
if ((ret = openssl_HMACsha256(random, 1504, temp_key, 32, _digest)) != ERROR_SUCCESS) {
log_error("create c2 digest failed. ret=%d", ret);
return ret;
}
log_verbose("generate c2 digest success.");
memcpy(digest, _digest, 32);
return ret;
}
int c2s2::c2_validate(c1s1* s1, bool& is_valid)
{
is_valid = false;
int ret = ERROR_SUCCESS;
char temp_key[__SRS_OpensslHashSize];
if ((ret = openssl_HMACsha256(s1->get_digest(), 32, SrsGenuineFPKey, 62, temp_key)) != ERROR_SUCCESS) {
srs_error("create c2 temp key failed. ret=%d", ret);
return ret;
}
srs_verbose("generate c2 temp key success.");
char _digest[__SRS_OpensslHashSize];
if ((ret = openssl_HMACsha256(random, 1504, temp_key, 32, _digest)) != ERROR_SUCCESS) {
srs_error("create c2 digest failed. ret=%d", ret);
return ret;
}
srs_verbose("generate c2 digest success.");
is_valid = srs_bytes_equals(digest, _digest, 32);
return ret;
}
int Init_RC4_Encryption(u_int8_t *secretKey,u_int8_t *pubKeyIn,u_int8_t *pubKeyOut, RC4_handle *rc4keyIn, RC4_handle *rc4keyOut)
{
int ret = ERROR_SUCCESS;
u_int8_t digest[32];
RC4_alloc(rc4keyIn);
RC4_alloc(rc4keyOut);
if((ret = openssl_HMACsha256(pubKeyIn,128,secretKey,128,digest)) != ERROR_SUCCESS){
return ret;
}
RC4_setkey(*rc4keyOut, 16, digest);
if((ret = openssl_HMACsha256(pubKeyOut,128,secretKey,128,digest)) != ERROR_SUCCESS){
return ret;
}
RC4_setkey(*rc4keyIn, 16, digest);
return ret;
}
