Function ComputeResponse

src/torcontrol.cpp:598–607

Compute Tor SAFECOOKIE response. * * ServerHash is computed as: * HMAC-SHA256("Tor safe cookie authentication server-to-controller hash", * CookieString | ClientNonce | ServerNonce) * (with the HMAC key as its first argument) * * After a controller sends a successful AUTHCHALLENGE command, the * next command sent on the connection must be an AUTHENTICATE c

 *
 */
static std::vector<uint8_t> ComputeResponse(std::string_view key, std::span<const uint8_t> cookie, std::span<const uint8_t> client_nonce, std::span<const uint8_t> server_nonce)
{
    CHMAC_SHA256 computeHash((const uint8_t*)key.data(), key.size());
    std::vector<uint8_t> computedHash(CHMAC_SHA256::OUTPUT_SIZE, 0);
    computeHash.Write(cookie.data(), cookie.size());
    computeHash.Write(client_nonce.data(), client_nonce.size());
    computeHash.Write(server_nonce.data(), server_nonce.size());
    computeHash.Finalize(computedHash.data());
    return computedHash;
}

void TorController::authchallenge_cb(TorControlConnection& _conn, const TorControlReply& reply)
{