/// <summary>
/// Starts key exchange algorithm
/// </summary>
/// <param name="session">The session.</param>
/// <param name="message">Key exchange init message.</param>
public override void Start(Session session, KeyExchangeInitMessage message)
{
base.Start(session, message);
#if true //old TUNING
_serverPayload = message.GetBytes();
_clientPayload = Session.ClientInitMessage.GetBytes();
#else
this._serverPayload = message.GetBytes().ToArray();
this._clientPayload = this.Session.ClientInitMessage.GetBytes().ToArray();
#endif
}
/// <summary>
/// Starts key exchange algorithm
/// </summary>
/// <param name="session">The session.</param>
/// <param name="message">Key exchange init message.</param>
public override void Start(Session session, KeyExchangeInitMessage message)
{
base.Start(session, message);
_serverPayload = message.GetBytes();
_clientPayload = Session.ClientInitMessage.GetBytes();
}
/// <summary>
/// Starts key exchange algorithm
/// </summary>
/// <param name="session">The session.</param>
/// <param name="message">Key exchange init message.</param>
public override void Start(Session session, KeyExchangeInitMessage message)
{
base.Start(session, message);
this._serverPayload = message.GetBytes().ToArray();
this._clientPayload = this.Session.ClientInitMessage.GetBytes().ToArray();
this.Session.RegisterMessage("SSH_MSG_KEXECDH_REPLY");
this.Session.MessageReceived += Session_MessageReceived;
//3.2.1 Elliptic Curve Key Pair Generation Primitive
//Elliptic curve key pairs should be generated as follows:
//Input: Valid elliptic curve domain parameters T = (p, a, b, G, n, h) or (m, f(x), a, b,G, n, h).
//Output: An elliptic curve key pair (d,Q) associated with T.
//Actions: Generate an elliptic curve key pair as follows:
//1. Randomly or pseudorandomly select an integer d in the interval [1, n − 1].
//2. Compute Q = dG.
//3. Output (d,Q).
BigInteger p;
BigInteger.TryParse("00FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFF", NumberStyles.AllowHexSpecifier, CultureInfo.CurrentCulture, out p);
BigInteger n;
BigInteger.TryParse("00FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFC7634D81F4372DDF581A0DB248B0A77AECEC196ACCC52973", NumberStyles.AllowHexSpecifier, CultureInfo.CurrentCulture, out n);
BigInteger G;
BigInteger.TryParse("00036B17D1F2E12C4247F8BCE6E563A440F277037D812DEB33A0F4A13945D898C296", NumberStyles.AllowHexSpecifier, CultureInfo.CurrentCulture, out G);
BigInteger d;
do
{
d = BigInteger.Random(n.BitLength);
} while (d < 1 || d > n);
var Q = d * G;
this.SendMessage(new KeyExchangeEcdhInitMessage(d, Q));
}
public void Test_KeyExchangeInitMessage_GetBytes()
{
var m = new KeyExchangeInitMessage()
{
KeyExchangeAlgorithms = new string[] { "diffie-hellman-group-exchange-sha256", "diffie-hellman-group-exchange-sha1", "diffie-hellman-group14-sha1", "diffie-hellman-group1-sha1" },
ServerHostKeyAlgorithms = new string[] { "ssh-rsa", "ssh-dss" },
EncryptionAlgorithmsClientToServer = new string[] { "aes256-ctr", "3des-cbc", "aes128-cbc", "aes192-cbc", "aes256-cbc", "blowfish-cbc", "cast128-cbc", "aes128-ctr", "aes192-ctr" },
EncryptionAlgorithmsServerToClient = new string[] { "aes256-ctr", "3des-cbc", "aes128-cbc", "aes192-cbc", "aes256-cbc", "blowfish-cbc", "cast128-cbc", "aes128-ctr", "aes192-ctr" },
MacAlgorithmsClientToServer = new string[] { "hmac-md5", "hmac-sha1", },
MacAlgorithmsServerToClient = new string[] { "hmac-md5", "hmac-sha1", },
CompressionAlgorithmsClientToServer = new string[] { "none" },
CompressionAlgorithmsServerToClient = new string[] { "none" },
LanguagesClientToServer = new string[] { string.Empty },
LanguagesServerToClient = new string[] { string.Empty },
FirstKexPacketFollows = false,
Reserved = 0,
};
var input = new byte[] { 0x14, 0xf3, 0x3b, 0xf9, 0x5e, 0x70, 0x18, 0x6a, 0x43, 0x3d, 0x93, 0x9e, 0x1c, 0x50, 0x4a, 0x8a, 0x33, 0x00, 0x00, 0x00, 0x7e, 0x64, 0x69, 0x66, 0x66, 0x69, 0x65, 0x2d, 0x68, 0x65, 0x6c, 0x6c, 0x6d, 0x61, 0x6e, 0x2d, 0x67, 0x72, 0x6f, 0x75, 0x70, 0x2d, 0x65, 0x78, 0x63, 0x68, 0x61, 0x6e, 0x67, 0x65, 0x2d, 0x73, 0x68, 0x61, 0x32, 0x35, 0x36, 0x2c, 0x64, 0x69, 0x66, 0x66, 0x69, 0x65, 0x2d, 0x68, 0x65, 0x6c, 0x6c, 0x6d, 0x61, 0x6e, 0x2d, 0x67, 0x72, 0x6f, 0x75, 0x70, 0x2d, 0x65, 0x78, 0x63, 0x68, 0x61, 0x6e, 0x67, 0x65, 0x2d, 0x73, 0x68, 0x61, 0x31, 0x2c, 0x64, 0x69, 0x66, 0x66, 0x69, 0x65, 0x2d, 0x68, 0x65, 0x6c, 0x6c, 0x6d, 0x61, 0x6e, 0x2d, 0x67, 0x72, 0x6f, 0x75, 0x70, 0x31, 0x34, 0x2d, 0x73, 0x68, 0x61, 0x31, 0x2c, 0x64, 0x69, 0x66, 0x66, 0x69, 0x65, 0x2d, 0x68, 0x65, 0x6c, 0x6c, 0x6d, 0x61, 0x6e, 0x2d, 0x67, 0x72, 0x6f, 0x75, 0x70, 0x31, 0x2d, 0x73, 0x68, 0x61, 0x31, 0x00, 0x00, 0x00, 0x0f, 0x73, 0x73, 0x68, 0x2d, 0x72, 0x73, 0x61, 0x2c, 0x73, 0x73, 0x68, 0x2d, 0x64, 0x73, 0x73, 0x00, 0x00, 0x00, 0x63, 0x61, 0x65, 0x73, 0x32, 0x35, 0x36, 0x2d, 0x63, 0x74, 0x72, 0x2c, 0x33, 0x64, 0x65, 0x73, 0x2d, 0x63, 0x62, 0x63, 0x2c, 0x61, 0x65, 0x73, 0x31, 0x32, 0x38, 0x2d, 0x63, 0x62, 0x63, 0x2c, 0x61, 0x65, 0x73, 0x31, 0x39, 0x32, 0x2d, 0x63, 0x62, 0x63, 0x2c, 0x61, 0x65, 0x73, 0x32, 0x35, 0x36, 0x2d, 0x63, 0x62, 0x63, 0x2c, 0x62, 0x6c, 0x6f, 0x77, 0x66, 0x69, 0x73, 0x68, 0x2d, 0x63, 0x62, 0x63, 0x2c, 0x63, 0x61, 0x73, 0x74, 0x31, 0x32, 0x38, 0x2d, 0x63, 0x62, 0x63, 0x2c, 0x61, 0x65, 0x73, 0x31, 0x32, 0x38, 0x2d, 0x63, 0x74, 0x72, 0x2c, 0x61, 0x65, 0x73, 0x31, 0x39, 0x32, 0x2d, 0x63, 0x74, 0x72, 0x00, 0x00, 0x00, 0x63, 0x61, 0x65, 0x73, 0x32, 0x35, 0x36, 0x2d, 0x63, 0x74, 0x72, 0x2c, 0x33, 0x64, 0x65, 0x73, 0x2d, 0x63, 0x62, 0x63, 0x2c, 0x61, 0x65, 0x73, 0x31, 0x32, 0x38, 0x2d, 0x63, 0x62, 0x63, 0x2c, 0x61, 0x65, 0x73, 0x31, 0x39, 0x32, 0x2d, 0x63, 0x62, 0x63, 0x2c, 0x61, 0x65, 0x73, 0x32, 0x35, 0x36, 0x2d, 0x63, 0x62, 0x63, 0x2c, 0x62, 0x6c, 0x6f, 0x77, 0x66, 0x69, 0x73, 0x68, 0x2d, 0x63, 0x62, 0x63, 0x2c, 0x63, 0x61, 0x73, 0x74, 0x31, 0x32, 0x38, 0x2d, 0x63, 0x62, 0x63, 0x2c, 0x61, 0x65, 0x73, 0x31, 0x32, 0x38, 0x2d, 0x63, 0x74, 0x72, 0x2c, 0x61, 0x65, 0x73, 0x31, 0x39, 0x32, 0x2d, 0x63, 0x74, 0x72, 0x00, 0x00, 0x00, 0x12, 0x68, 0x6d, 0x61, 0x63, 0x2d, 0x6d, 0x64, 0x35, 0x2c, 0x68, 0x6d, 0x61, 0x63, 0x2d, 0x73, 0x68, 0x61, 0x31, 0x00, 0x00, 0x00, 0x12, 0x68, 0x6d, 0x61, 0x63, 0x2d, 0x6d, 0x64, 0x35, 0x2c, 0x68, 0x6d, 0x61, 0x63, 0x2d, 0x73, 0x68, 0x61, 0x31, 0x00, 0x00, 0x00, 0x04, 0x6e, 0x6f, 0x6e, 0x65, 0x00, 0x00, 0x00, 0x04, 0x6e, 0x6f, 0x6e, 0x65, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
var output = m.GetBytes();
// Skip first 17 bytes since 16 bytes are randomly generated
Assert.IsTrue(input.Skip(17).SequenceEqual(output.Skip(17)));
}