public void KeyVerify(string algorithm, HashAlgorithm hash)
{
MemoryStream cache = new MemoryStream();
NetworkByteWriter nbr_cache = new NetworkByteWriter(cache);
nbr_cache.WriteString(verify_v_c);
nbr_cache.WriteString(verify_v_s);
nbr_cache.WriteBlob(verify_i_c);
nbr_cache.WriteBlob(verify_i_s);
nbr_cache.WriteBlob(verify_k_s);
nbr_cache.WriteMPInt(verify_e);
nbr_cache.WriteMPInt(verify_f);
nbr_cache.WriteMPInt(verify_k);
nbr_cache.Flush();
if (algorithm == "ssh-rsa")
{
verify_h = hash.ComputeHash(cache.ToArray());
RSAParameters RSAKeyInfo = new RSAParameters();
{
MemoryStream ms_tmp = new MemoryStream(verify_k_s);
NetworkByteReader nbr_tmp = new NetworkByteReader(ms_tmp);
string type = nbr_tmp.ReadString();
BigInteger rsa_e = nbr_tmp.ReadMPInt();
BigInteger rsa_n = nbr_tmp.ReadMPInt();
RSAKeyInfo.Modulus = NetworkByteUtils.BigIntegerToUnsignedArray(rsa_n);
RSAKeyInfo.Exponent = NetworkByteUtils.BigIntegerToUnsignedArray(rsa_e);
}
byte[] rsa_signature_blob;
{
MemoryStream ms_tmp = new MemoryStream(verify_sig);
NetworkByteReader nbr_tmp = new NetworkByteReader(ms_tmp);
string type = nbr_tmp.ReadString();
rsa_signature_blob = nbr_tmp.ReadBlob();
}
RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
RSA.ImportParameters(RSAKeyInfo);
RSAPKCS1SignatureDeformatter RSADeformatter = new RSAPKCS1SignatureDeformatter(RSA);
RSADeformatter.SetHashAlgorithm("SHA1");
byte[] xx2 = SHA1.Create().ComputeHash(verify_h);
bool verify = RSADeformatter.VerifySignature(xx2, rsa_signature_blob);
}
}
override public void Pack()
{
MemoryStream ms = new MemoryStream();
NetworkByteWriter nbw = new NetworkByteWriter(ms);
nbw.WriteByte((byte)Message);
nbw.WriteBytes(cookie);
nbw.WriteNameList(kex_algorithms);
nbw.WriteNameList(server_host_key_algorithms);
nbw.WriteNameList(encryption_algorithms_client_to_server);
nbw.WriteNameList(encryption_algorithms_server_to_client);
nbw.WriteNameList(mac_algorithms_client_to_server);
nbw.WriteNameList(mac_algorithms_server_to_client);
nbw.WriteNameList(compression_algorithms_client_to_server);
nbw.WriteNameList(compression_algorithms_server_to_client);
nbw.WriteNameList(languages_client_to_server);
nbw.WriteNameList(languages_server_to_client);
nbw.WriteBoolean(first_kex_packet_follows);
nbw.WriteUInt32(0);
nbw.Flush();
SetPayload(ms.ToArray());
}
public void SendPacket(ICryptoTransform encryptor, Packet packet)
{
byte[] payload = packet.GetPayload();
int blocksize = 16;
if (encryptor == null)
{
uint size = (uint)payload.Length;
size += 5;
size = (uint)((size + blocksize) / blocksize * blocksize);
uint packet_length = size - 4;
byte padding_length = (byte)(size - 5 - payload.Length);
MemoryStream ms = new MemoryStream();
NetworkByteWriter nbw = new NetworkByteWriter(ms);
nbw.WriteUInt32(packet_length);
nbw.WriteByte(padding_length);
nbw.WriteBytes(payload);
for (int i = 0; i < padding_length; i++ ) nbw.WriteByte(0x0C);
nbw.Flush();
writer.WriteBytes(ms.ToArray());
writer.Flush();
}
else
{
blocksize = Math.Max(encryptor.InputBlockSize, blocksize);
uint size = (uint)payload.Length;
size += (5 + (uint)encryptor.InputBlockSize);
size = (uint)((size + blocksize) / blocksize * blocksize);
uint packet_length = size - 4;
byte padding_length = (byte)(size - 5 - payload.Length);
MemoryStream ms = new MemoryStream();
NetworkByteWriter nbw = new NetworkByteWriter(ms);
nbw.WriteUInt32(packet_length);
nbw.WriteByte(padding_length);
nbw.WriteBytes(payload);
for (int i = 0; i < padding_length; i++) nbw.WriteByte(0x0C);
nbw.Flush();
// compute mac
byte[] cache = ms.ToArray();
MemoryStream ms_mac = new MemoryStream();
NetworkByteWriter nbw_mac = new NetworkByteWriter(ms_mac);
nbw_mac.WriteUInt32((uint)sequence);
nbw_mac.WriteBytes(cache);
nbw_mac.Flush();
byte[] mac = crypto_mac_encryptor.ComputeHash(ms_mac.ToArray());
crypto_encryptor.TransformBlock(cache, 0, cache.Length, cache, 0);
writer.WriteBytes(cache);
writer.Flush();
if (crypto_mac_encryptor != null)
{
writer.WriteBytes(mac);
}
}
sequence++;
}
public void KeyVerify(string algorithm, HashAlgorithm hash)
{
MemoryStream cache = new MemoryStream();
NetworkByteWriter nbr_cache = new NetworkByteWriter(cache);
nbr_cache.WriteString(verify_v_c);
nbr_cache.WriteString(verify_v_s);
nbr_cache.WriteBlob(verify_i_c);
nbr_cache.WriteBlob(verify_i_s);
nbr_cache.WriteBlob(verify_k_s);
nbr_cache.WriteMPInt(verify_e);
nbr_cache.WriteMPInt(verify_f);
nbr_cache.WriteMPInt(verify_k);
nbr_cache.Flush();
if (algorithm == "ssh-rsa")
{
verify_h = hash.ComputeHash(cache.ToArray());
RSAParameters RSAKeyInfo = new RSAParameters();
{
MemoryStream ms_tmp = new MemoryStream(verify_k_s);
NetworkByteReader nbr_tmp = new NetworkByteReader(ms_tmp);
string type = nbr_tmp.ReadString();
BigInteger rsa_e = nbr_tmp.ReadMPInt();
BigInteger rsa_n = nbr_tmp.ReadMPInt();
RSAKeyInfo.Modulus = NetworkByteUtils.BigIntegerToUnsignedArray(rsa_n);
RSAKeyInfo.Exponent = NetworkByteUtils.BigIntegerToUnsignedArray(rsa_e);
}
byte[] rsa_signature_blob;
{
MemoryStream ms_tmp = new MemoryStream(verify_sig);
NetworkByteReader nbr_tmp = new NetworkByteReader(ms_tmp);
string type = nbr_tmp.ReadString();
rsa_signature_blob = nbr_tmp.ReadBlob();
}
RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
RSA.ImportParameters(RSAKeyInfo);
RSAPKCS1SignatureDeformatter RSADeformatter = new RSAPKCS1SignatureDeformatter(RSA);
RSADeformatter.SetHashAlgorithm("SHA1");
byte[] xx2 = SHA1.Create().ComputeHash(verify_h);
bool verify = RSADeformatter.VerifySignature(xx2, rsa_signature_blob);
}
}
override public void Pack()
{
writer.Flush();
SetPayload(cache.ToArray());
}
public override void Pack()
{
MemoryStream ms = new MemoryStream();
NetworkByteWriter nbw = new NetworkByteWriter(ms);
nbw.WriteByte((byte)Message);
nbw.WriteBytes(cookie);
nbw.WriteNameList(kex_algorithms);
nbw.WriteNameList(server_host_key_algorithms);
nbw.WriteNameList(encryption_algorithms_client_to_server);
nbw.WriteNameList(encryption_algorithms_server_to_client);
nbw.WriteNameList(mac_algorithms_client_to_server);
nbw.WriteNameList(mac_algorithms_server_to_client);
nbw.WriteNameList(compression_algorithms_client_to_server);
nbw.WriteNameList(compression_algorithms_server_to_client);
nbw.WriteNameList(languages_client_to_server);
nbw.WriteNameList(languages_server_to_client);
nbw.WriteBoolean(first_kex_packet_follows);
nbw.WriteUInt32(0);
nbw.Flush();
SetPayload(ms.ToArray());
}
public void SendPacket(ICryptoTransform encryptor, Packet packet)
{
byte[] payload = packet.GetPayload();
int blocksize = 16;
if (encryptor == null)
{
uint size = (uint)payload.Length;
size += 5;
size = (uint)((size + blocksize) / blocksize * blocksize);
uint packet_length = size - 4;
byte padding_length = (byte)(size - 5 - payload.Length);
MemoryStream ms = new MemoryStream();
NetworkByteWriter nbw = new NetworkByteWriter(ms);
nbw.WriteUInt32(packet_length);
nbw.WriteByte(padding_length);
nbw.WriteBytes(payload);
for (int i = 0; i < padding_length; i++)
{
nbw.WriteByte(0x0C);
}
nbw.Flush();
writer.WriteBytes(ms.ToArray());
writer.Flush();
}
else
{
blocksize = Math.Max(encryptor.InputBlockSize, blocksize);
uint size = (uint)payload.Length;
size += (5 + (uint)encryptor.InputBlockSize);
size = (uint)((size + blocksize) / blocksize * blocksize);
uint packet_length = size - 4;
byte padding_length = (byte)(size - 5 - payload.Length);
MemoryStream ms = new MemoryStream();
NetworkByteWriter nbw = new NetworkByteWriter(ms);
nbw.WriteUInt32(packet_length);
nbw.WriteByte(padding_length);
nbw.WriteBytes(payload);
for (int i = 0; i < padding_length; i++)
{
nbw.WriteByte(0x0C);
}
nbw.Flush();
// compute mac
byte[] cache = ms.ToArray();
MemoryStream ms_mac = new MemoryStream();
NetworkByteWriter nbw_mac = new NetworkByteWriter(ms_mac);
nbw_mac.WriteUInt32((uint)sequence);
nbw_mac.WriteBytes(cache);
nbw_mac.Flush();
byte[] mac = crypto_mac_encryptor.ComputeHash(ms_mac.ToArray());
crypto_encryptor.TransformBlock(cache, 0, cache.Length, cache, 0);
writer.WriteBytes(cache);
writer.Flush();
if (crypto_mac_encryptor != null)
{
writer.WriteBytes(mac);
}
}
sequence++;
}
