public void PersionalMessages()
        {
            string message = "test";
            string messageSignatureAsHex = "20f779383f3ce0ab7781b7c8ff848e6d80f7f22d5cdc266763cd74d89c5ee0716758e75f56391711957f506d4993ae7dea62bec0f2806e6de66227f52836160a";

            byte[] messageSignature = Hex.Decode(messageSignatureAsHex);
            string messageNonASCII  = "tæst";
            string messageNonASCIISignatureAsHex = "68d1344c46d9b2ef642490ffade3155c714471dd6d097fc393edc1004031a5492270de77ef8918df7857ea348d8ba4444ed1ff8e84f19e8e685e31174356fa06";

            byte[] messageNonASCIISignature = Hex.Decode(messageNonASCIISignatureAsHex);
            //sign - should produce correct signature of message
            byte[] msgSignature = Signing.SignMessage(message, privateKeyAsHex);
            CollectionAssert.AreEqual(msgSignature, messageSignature);
            //sign - should produce correct signature of message with non-ASCII chars
            msgSignature = Signing.SignMessage(messageNonASCII, privateKeyAsHex);
            CollectionAssert.AreEqual(msgSignature, messageNonASCIISignature);
            //verify - should verify message
            bool verified = Signing.VerifyMessage(message, messageSignature, Hex.ToHexString(publicKey));

            Assert.IsTrue(verified);
            //verify - should verify message with non-ASCII chars
            verified = Signing.VerifyMessage(messageNonASCII, messageNonASCIISignature, Hex.ToHexString(publicKey));
            Assert.IsTrue(verified);
            // hashing produces 256 bit blake2b byte buffers
            string foobar          = "foobar";
            string foobarHashedHex = "93a0e84a8cdd4166267dbe1263e937f08087723ac24e7dcc35b3d5941775ef47";

            byte[] hash = Encoding.Hash(System.Text.Encoding.UTF8.GetBytes(foobar));
            Assert.AreEqual(foobarHashedHex, Hex.ToHexString(hash));
            // convert base58Check address to hex
            string address        = "ak_Gd6iMVsoonGuTF8LeswwDDN2NF5wYHAoTRtzwdEcfS32LWoxm";
            string hex            = Encoding.AddressToHex(address);
            string fromHexAddress = Encoding.EncodeCheck(Hex.Decode(hex.Substring(2)), Constants.ApiIdentifiers.ACCOUNT_PUBKEY);

            Assert.AreEqual(fromHexAddress, address);
            // commitmentHash generation test
            string kkNamespaceCommitmentId = "cm_aJBGWWjT65JqviLSexkofr5oEAEuEySNkmghsqxNjGt2WqPW8";
            string generatedCommitmentId   = Encoding.GenerateCommitmentHash(KK_NAMESPACE, TEST_SALT);

            Assert.AreEqual(kkNamespaceCommitmentId, generatedCommitmentId);
            // formatSalt generation test
            byte[] oneSalt       = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 110, 178, 148, 244, 193, 91 };
            byte[] formattedSalt = Encoding.BigIntegerToBytes(TEST_SALT);
            CollectionAssert.AreEqual(oneSalt, formattedSalt);
            // nameId generation test
            byte[] nameId          = { 182, 98, 49, 33, 170, 167, 215, 180, 62, 190, 1, 241, 67, 76, 100, 93, 243, 101, 162, 45, 120, 34, 190, 119, 255, 230, 114, 199, 72, 36, 190, 173 };
            byte[] generatedNameId = Encoding.NameId(KK_NAMESPACE);
            CollectionAssert.AreEqual(nameId, generatedNameId);
            // test concat nameId and salt
            byte[] nameIdAndSalt          = { 182, 98, 49, 33, 170, 167, 215, 180, 62, 190, 1, 241, 67, 76, 100, 93, 243, 101, 162, 45, 120, 34, 190, 119, 255, 230, 114, 199, 72, 36, 190, 173, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 110, 178, 148, 244, 193, 91 };
            byte[] generatedNameIdAndSalt = Encoding.NameId(KK_NAMESPACE).Concatenate(Encoding.BigIntegerToBytes(TEST_SALT));
            CollectionAssert.AreEqual(nameIdAndSalt, generatedNameIdAndSalt);
            // test concat nameIdSalt and hash
            nameIdAndSalt          = new byte[] { 75, 154, 93, 216, 161, 119, 45, 33, 221, 255, 130, 163, 136, 227, 230, 90, 156, 162, 245, 187, 57, 193, 21, 224, 40, 39, 150, 225, 117, 59, 167, 243 };
            generatedNameIdAndSalt = Encoding.Hash(Encoding.NameId(KK_NAMESPACE).Concatenate(Encoding.BigIntegerToBytes(TEST_SALT)));
            CollectionAssert.AreEqual(nameIdAndSalt, generatedNameIdAndSalt);
            // hash domain and namespace
            byte[] generatedHash = Encoding.Hash(System.Text.Encoding.Default.GetBytes(DOMAIN));
            byte[] kkHash        = { 226, 34, 173, 200, 83, 245, 155, 227, 178, 61, 137, 129, 46, 107, 56, 219, 48, 231, 61, 232, 212, 25, 240, 132, 173, 147, 145, 146, 118, 88, 125, 26 };
            CollectionAssert.AreEqual(kkHash, generatedHash);
            byte[] generatedNS = Encoding.Hash(System.Text.Encoding.Default.GetBytes(NS));
            byte[] nsHash      = { 146, 139, 32, 54, 105, 67, 226, 175, 209, 30, 188, 14, 174, 46, 83, 169, 59, 241, 119, 164, 252, 243, 91, 204, 100, 213, 3, 112, 78, 101, 226, 2 };
            CollectionAssert.AreEqual(nsHash, generatedNS);
        }