public void Test_TestVectors()
{
var client = new SrpClient(TestVectors.H, TestVectors.g, TestVectors.N);
var server = new SrpServer(TestVectors.H, TestVectors.g, TestVectors.N);
// generate password verifier to store
BigInteger v = client.GenerateVerifier(TestVectors.I, TestVectors.P, TestVectors.s);
Assert.Equal(TestVectors.expected_v, v);
var A = client.GenerateTestVectorAValues(TestVectors.a);
Assert.Equal(TestVectors.expected_A, A);
var B = server.GenerateTestVectorBValues(v, TestVectors.b);
Assert.Equal(TestVectors.expected_B, B);
var clientS = client.ComputeSessionKey(TestVectors.I, TestVectors.P, TestVectors.s, B);
var serverS = server.ComputeSessionKey(v, A);
Assert.Equal(clientS, serverS);
Assert.Equal(TestVectors.expected_S, clientS);
var M1 = client.GenerateClientProof(B, clientS);
Assert.True(server.ValidateClientProof(M1, A, serverS));
var M2 = server.GenerateServerProof(A, M1, serverS);
Assert.True(client.ValidateServerProof(M2, M1, clientS));
}
internal void Test_WithArgon2Hasher(string groupName, SRPGroupParameters gp)
{
Console.WriteLine("Testing with SRP Group [{0}]", groupName);
var salt = Sodium.PasswordHash.ArgonGenerateSalt();
var hasher = (byte[] data) => Sodium.PasswordHash.ArgonHashBinary(data, salt);
var g = gp.g; // SRPGroupParameters.Group1024bit.g; //
var N = gp.N; // SRPGroupParameters.Group1024bit.N; //
var I = "*****@*****.**";
var P = "foo bar non";
var s = Sodium.SodiumCore.GetRandomBytes(32);
var client = new SrpClient(hasher, g, N);
var server = new SrpServer(hasher, g, N);
// generate password verifier to store
BigInteger v = client.GenerateVerifier(I, P, s);
var A = client.GenerateAValues(out var clientSrpState);
Assert.True(A >= BigInteger.Zero);
//var A = client.GenerateTestVectorAValues(
// BigInteger.Negate(BigInteger.Abs(new BigInteger(Sodium.SodiumCore.GetRandomBytes(32)))));
var B = server.GenerateBValues(v, out var serverSrpState);
Assert.True(B >= BigInteger.Zero);
//var B = server.GenerateTestVectorBValues(v,
// BigInteger.Negate(BigInteger.Abs(new BigInteger(Sodium.SodiumCore.GetRandomBytes(32)))));
var clientS = client.ComputeSessionKey(I, P, s, B);
var serverS = server.ComputeSessionKey(v, A);
Assert.Equal(clientS, serverS);
// Restore state in new client and server
client = new SrpClient(hasher, g, N, A, clientSrpState);
server = new SrpServer(hasher, g, N, B, serverSrpState);
var clientS2 = client.ComputeSessionKey(I, P, s, B);
var serverS2 = server.ComputeSessionKey(v, A);
Assert.Equal(clientS2, serverS);
Assert.Equal(clientS, serverS2);
var M1 = client.GenerateClientProof(B, clientS);
Assert.True(server.ValidateClientProof(M1, A, serverS));
var M2 = server.GenerateServerProof(A, M1, serverS);
Assert.True(client.ValidateServerProof(M2, M1, clientS));
}
public void Test_WithSha256Hasher()
{
var hasher = (byte[] data) => Sodium.CryptoHash.Sha256(data);
var g = SRPGroupParameters.Group1024bit.g;
var N = SRPGroupParameters.Group1024bit.N;
var I = "*****@*****.**";
var P = "foo bar non";
var s = Sodium.SodiumCore.GetRandomBytes(32);
var client = new SrpClient(hasher, g, N);
var server = new SrpServer(hasher, g, N);
// generate password verifier to store
BigInteger v = client.GenerateVerifier(I, P, s);
var A = client.GenerateAValues(out var clientSrpState);
var B = server.GenerateBValues(v, out var serverSrpState);
var clientS = client.ComputeSessionKey(I, P, s, B);
var serverS = server.ComputeSessionKey(v, A);
Assert.Equal(clientS, serverS);
// Restore state in new client and server
client = new SrpClient(hasher, g, N, A, clientSrpState);
server = new SrpServer(hasher, g, N, B, serverSrpState);
var clientS2 = client.ComputeSessionKey(I, P, s, B);
var serverS2 = server.ComputeSessionKey(v, A);
Assert.Equal(clientS2, serverS);
Assert.Equal(clientS, serverS2);
var M1 = client.GenerateClientProof(B, clientS);
Assert.True(server.ValidateClientProof(M1, A, serverS));
var M2 = server.GenerateServerProof(A, M1, serverS);
Assert.True(client.ValidateServerProof(M2, M1, clientS));
}