private async Task ProcessEncryptRequest(NetworkMessage message)
{
ChannelEncryptRequest encryptRequest = message.Deserialize <ChannelEncryptRequest>();
await NetLog.VerboseAsync($"Encrypting channel on protocol version {encryptRequest.ProtocolVersion} in universe {encryptRequest.Universe}").ConfigureAwait(false);
byte[] challange = encryptRequest.Challenge.All(b => b == 0) ? encryptRequest.Challenge : null; // check if all the values were made 0 by the marshal
byte[] publicKey = UniverseUtils.GetPublicKey(encryptRequest.Universe);
if (publicKey == null)
{
await NetLog.ErrorAsync($"Cannot find public key for universe {encryptRequest.Universe}").ConfigureAwait(false);
throw new InvalidOperationException($"Public key does not exist for universe {encryptRequest.Universe}");
}
byte[] tempSessionKey = CryptoUtils.GenerateBytes(32);
byte[] encryptedHandshake = null;
using (RsaCrypto rsa = new RsaCrypto(publicKey))
{
if (challange != null)
{
byte[] handshakeToEncrypt = new byte[tempSessionKey.Length + challange.Length];
Array.Copy(tempSessionKey, handshakeToEncrypt, tempSessionKey.Length);
Array.Copy(challange, 0, handshakeToEncrypt, tempSessionKey.Length, challange.Length);
encryptedHandshake = rsa.Encrypt(handshakeToEncrypt);
}
else
{
encryptedHandshake = rsa.Encrypt(tempSessionKey);
}
}
Encryption = challange != null ? (IEncryptor) new HmacEncryptor(tempSessionKey) : new SimpleEncryptor(tempSessionKey);
var encryptResponse = NetworkMessage.CreateMessage(MessageType.ChannelEncryptResponse, new ChannelEncryptResponse
{
KeySize = 128,
KeyHash = CryptoUtils.CrcHash(encryptedHandshake),
EncryptedHandshake = encryptedHandshake,
ProtocolVersion = 1,
});
await SendAsync(encryptResponse).ConfigureAwait(false);
}
public void Should_Encrypt_PlainText_With_PublicKey(string publicKeyJson)
{
var rsaCrypto = new RsaCrypto();
var encrypted = rsaCrypto.Encrypt(_plainText, publicKeyJson);
encrypted.Should().NotBeNullOrWhiteSpace();
encrypted.Should().NotBe(_plainText);
}
public void CryptoTest()
{
var plainText = "TEST";
var encyptionKey = rsaCrypto.LoadPublic("MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAkdgLUK_Du7ZdGSoblJkWo5spPSV5IZVb75f8VqbSf8AwI214bhFeOLGrqInwEwscdKphlcxlmnx9ME-ABObPkExMq_CNd__WFIY--7mn6IxexMsx_ohsRscO1gZOh5SfwCOOhSCfKtouyfTSgv2c6JeT0utjIWFUawooXs983R1bqpXoMhwxMrIyFY7uR7gV47ar0JMPn74pna9tvq67cENnm4HXjA-yWMW5wc9lydVB5N7IjwU7LHFyBH0EimWxvSuRmc-nLpouqSYZAR5IQ2Lu28BEAnPL393cVI1_mt2JG6J9AkY-Q0pTh7Fr2tUcYVppRv9RwKh4YOYHabd37QIDAQAB");
var encrypted = rsaCrypto.Encrypt(plainText, encyptionKey);
var decryptionKey = rsaCrypto.LoadPrivate("MIIEvQIBADANBgkqhkiG9w0BAQEFAASCBKcwggSjAgEAAoIBAQCR2AtQr8O7tl0ZKhuUmRajmyk9JXkhlVvvl_xWptJ_wDAjbXhuEV44sauoifATCxx0qmGVzGWafH0wT4AE5s-QTEyr8I13_9YUhj77uafojF7EyzH-iGxGxw7WBk6HlJ_AI46FIJ8q2i7J9NKC_Zzol5PS62MhYVRrCihez3zdHVuqlegyHDEysjIVju5HuBXjtqvQkw-fvimdr22-rrtwQ2ebgdeMD7JYxbnBz2XJ1UHk3siPBTsscXIEfQSKZbG9K5GZz6cumi6pJhkBHkhDYu7bwEQCc8vf3dxUjX-a3Ykbon0CRj5DSlOHsWva1RxhWmlG_1HAqHhg5gdpt3ftAgMBAAECggEAVvQ6etbwmmB2TWSfoQ9NQipmggBvoihM8iLp3jgEVQqfKOBB504PoTm9IPVs383GH4DeQdPl2B_U_BLKPyHmKyByrij0D9HHL-GCd88PX0Uh069alWl9NQ3FuLF17LweKw6IELOMcp43O03unQ7cmIiXKDAToHlJPbCGtVB8H9BSE593uHJBhU0lYDYVBWHKE3ts2jU2830kgWLRLA3wAgJj6OdBTGEEjkN7x3H3hgRybd_xoi0mYYRrnFgZ_MaskegvTn4LOZqZqk9vZh7P7DQFhjMWdBPzH4V51X2PS2exLbracTd9b75gWcNh_nxPNINAgvbjteLNuZkxKcs4-QKBgQDhLxbnp0Ygqypja7LUlgKTfA0MFaaBm340hCHjhjMli_aQEBmvTriT4wC7x4aZIXnkBaeJG5OKRXKrLhKEX7B7SKoZSidWqLQMdOlPwWn3Q-dZmrt_UT0RMs5cQlzIT5Yf8l1DFjR156VHTgPdi3VIrmNBZOBbk3bwpgqsdWp-OwKBgQClzWvSuHL21i98fyV77vY6-GRsSfJTYzw_zGr-8IMN07jJr5PbAsrhggwNHno7ZONS9GohoIBZmn4e5m4gy4H7oWE29dn3B47D62bgP4T__IjsjAgAJcdKXuiFpZFLq4Q7kLv0WyWd6H5nxwaEHdQfAv9neO5lbpNmz8o8wfs39wKBgQCDIJuy69pPXb0CRg3N80iuv3cNiXH7WSOlyye8yUHxZE6A149NYYbkPzUHJAoCE9dZ690CXzeMNiKvAdYwlVQ8hjTfIypDMVwfQNk340Ykgbsvl4YFfrYT1MUMPmyvDIE8OzMJxN1ppym8mvZvRS1X1Izh4K8xRG7ndZkTkhAgTwKBgFFicN-hTEUfQ3Xfz11zIYg2rsx8y6bk2gkS5R44noul9lmBhpkFWOKyfAnggO0wi2kHsiTJbNcOv4OZZktQuX_zag2ZRiE8o3ZF0VyXsUgaBHfgEHlKEfXOemJHr_ctvJ2kYK4EI4XMPmfgSLGHFr0WMpnuwU4mpdHcgw-pxA9nAoGAQ5ss5wAnrCTb3Qlt7sErfaS16S2rC79bhIMl7I73-w_k5LsUDe7GKv4ZnJT0Fm_D27ajL1h2URJxjbxI1TRv7SKMztFfXx6YECkdWpzal02f8NJ300-0BNgBpQZ39EBbtGxS35RWS1qC-Dp8N52Qz35pK1mvP0Cff99oGTdZkjY");
var decrypted = rsaCrypto.Decrypt(encrypted, decryptionKey);
decrypted.ShouldBe(plainText);
}
public void Should_Encrypt_And_Decrypt_With_Generated_Key()
{
var rsaCrypto = new RsaCrypto();
var(privateKeyJson, publicKeyJson) = rsaCrypto.GenerateKeyPair(2048);
var encrypted = rsaCrypto.Encrypt(_plainText, publicKeyJson);
encrypted.Should().NotBeNullOrWhiteSpace();
encrypted.Should().NotBe(_plainText);
var decrypted = rsaCrypto.Decrypt(encrypted, privateKeyJson);
decrypted.Should().NotBeNullOrWhiteSpace();
decrypted.Should().Be(_plainText);
}
