/* Generate a session key and RC4 keys, given client and server randoms */
static void
licence_generate_keys(uint8 *client_key, uint8 *server_key, uint8 *client_rsa)
{
uint8 session_key[48];
uint8 temp_hash[48];
/* Generate session key - two rounds of sec_hash_48 */
sec_hash_48(temp_hash, client_rsa, client_key, server_key, 65);
sec_hash_48(session_key, temp_hash, server_key, client_key, 65);
/* Store first 16 bytes of session key, for generating signatures */
memcpy(licence_sign_key, session_key, 16);
/* Generate RC4 key */
sec_hash_16(licence_key, &session_key[16], client_key, server_key);
}
/* Generate a session key and RC4 keys, given client and server randoms */
static void
licence_generate_keys(RDPCLIENT * This, uint8 * client_random, uint8 * server_random, uint8 * pre_master_secret)
{
uint8 master_secret[48];
uint8 key_block[48];
/* Generate master secret and then key material */
sec_hash_48(master_secret, pre_master_secret, client_random, server_random, 'A');
sec_hash_48(key_block, master_secret, server_random, client_random, 'A');
/* Store first 16 bytes of session key as MAC secret */
memcpy(This->licence.sign_key, key_block, 16);
/* Generate RC4 key from next 16 bytes */
sec_hash_16(This->licence.key, &key_block[16], client_random, server_random);
}
