public void TestSignatureFactoryStringInput() { SignatureFactory f = new SignatureFactory(); string buffer = "abcdefghijklmnopqrstuvwxyz"; string signature1 = f.Sign(buffer); Assert.IsTrue(f.Verify(buffer, signature1), "(1) correct signature verification"); Assert.IsFalse(f.Verify(new string(buffer.Reverse().ToArray()), signature1), "(2) incorrect signature verification"); // Test new Encryption instance based on existing Key and IV. f = new SignatureFactory(f.ExportPrivateKey()); string signature2 = f.Sign(buffer); Assert.IsTrue(f.Verify(buffer, signature1), "(3) correct signature verification "); Assert.IsTrue(f.Verify(buffer, signature2), "(4) correct signature verification "); Assert.IsFalse(f.Verify(new string(buffer.Reverse().ToArray()), signature2), "(5) incorrect signature verification"); Assert.AreNotEqual(buffer, signature1, "(6) signature should not be the same as original data"); }
public void TestSignatureFactoryByteArrayInput() { SignatureFactory f = new SignatureFactory(); byte[] buffer = new byte[300]; new Random().NextBytes(buffer); byte[] signature1 = f.Sign(buffer); Assert.AreNotEqual(string.Join(",", buffer), string.Join(",", signature1), "signature should not be the same as original data"); Assert.IsTrue(f.Verify(buffer, signature1), "(1) correct signature verification"); Assert.IsFalse(f.Verify(buffer.Reverse().ToArray(), signature1), "(2) incorrect signature verification"); Assert.IsFalse(f.Verify(buffer, signature1.Reverse().ToArray()), "(3) incorrect signature verification"); // Test new Encryption instance based on existing Key and IV. f = new SignatureFactory(f.ExportPrivateKey()); byte[] signature2 = f.Sign(buffer); Assert.IsTrue(f.Verify(buffer, signature1), "(4) correct signature verification "); Assert.IsTrue(f.Verify(buffer, signature2), "(5) correct signature verification "); Assert.IsFalse(f.Verify(buffer.Reverse().ToArray(), signature2), "(6) incorrect signature verification"); Assert.IsFalse(f.Verify(buffer, signature2.Reverse().ToArray()), "(7) incorrect signature verification"); Assert.AreNotEqual(buffer, signature1, "(8) signature should not be the same as original data"); }