Method makeMasterSecret

extra/yassl/src/yassl_int.cpp:977–1017

Create and store the master secret see page 32, 6.1

// Create and store the master secret see page 32, 6.1
void SSL::makeMasterSecret()
{
    if (isTLS())
        makeTLSMasterSecret();
    else {
        opaque sha_output[SHA_LEN];

        const uint& preSz = secure_.get_connection().pre_secret_len_;
        output_buffer md5_input(preSz + SHA_LEN);
        output_buffer sha_input(PREFIX + preSz + 2 * RAN_LEN);

        MD5 md5;
        SHA sha;

        md5_input.write(secure_.get_connection().pre_master_secret_, preSz);

        for (int i = 0; i < MASTER_ROUNDS; ++i) {
            opaque prefix[PREFIX];
            if (!setPrefix(prefix, i)) {
                SetError(prefix_error);
                return;
            }

            sha_input.set_current(0);
            sha_input.write(prefix, i + 1);

            sha_input.write(secure_.get_connection().pre_master_secret_,preSz);
            sha_input.write(secure_.get_connection().client_random_, RAN_LEN);
            sha_input.write(secure_.get_connection().server_random_, RAN_LEN);
            sha.get_digest(sha_output, sha_input.get_buffer(),
                           sha_input.get_size());

            md5_input.set_current(preSz);
            md5_input.write(sha_output, SHA_LEN);
            md5.get_digest(&secure_.use_connection().master_secret_[i*MD5_LEN],
                           md5_input.get_buffer(), md5_input.get_size());
        }
        deriveKeys();
    }
    secure_.use_connection().CleanPreMaster();
}


// create TLSv1 master secret