Method read

extra/yassl/src/yassl_imp.cpp:221–255

read PreMaster secret and decrypt, server side

// read PreMaster secret and decrypt, server side
void EncryptedPreMasterSecret::read(SSL& ssl, input_buffer& input)
{
    if (input.get_error()) {
        ssl.SetError(bad_input);
        return;
    }

    const CertManager& cert = ssl.getCrypto().get_certManager();
    RSA rsa(cert.get_privateKey(), cert.get_privateKeyLength(), false);
    uint16 cipherLen = rsa.get_cipherLength();
    if (ssl.isTLS()) {
        byte len[2];
        len[0] = input[AUTO];
        len[1] = input[AUTO];
        ato16(len, cipherLen);
    }
    alloc(cipherLen);
    input.read(secret_, length_);
    if (input.get_error()) {
        ssl.SetError(bad_input);
        return;
    }

    opaque preMasterSecret[SECRET_LEN];
    memset(preMasterSecret, 0, sizeof(preMasterSecret));
    rsa.decrypt(preMasterSecret, secret_, length_, 
                ssl.getCrypto().get_random());

    ProtocolVersion pv = ssl.getSecurity().get_connection().chVersion_;
    if (pv.major_ != preMasterSecret[0] || pv.minor_ != preMasterSecret[1])
        ssl.SetError(pms_version_error); // continue deriving for timing attack

    ssl.set_preMaster(preMasterSecret, SECRET_LEN);
    ssl.makeMasterSecret();
}


EncryptedPreMasterSecret::EncryptedPreMasterSecret()