OMEGAYALFA/Decrypt using C# (H2 script).cs

## Decrypt using C# (H2 script).cs
//based on code sample from this MSDN article: http://msdn.microsoft.com/en-us/library/system.security.cryptography.aes(v=vs.100).aspx)
Func<byte[], byte[],byte[], string>  decryptStringFromBytes_AES =
  (cipherText, Key,  IV) =>
        {
            // Check arguments.
            if (cipherText == null || cipherText.Length <= 0)
                throw new ArgumentNullException("cipherText");
            if (Key == null || Key.Length <= 0)
                throw new ArgumentNullException("Key");
            if (IV == null || IV.Length <= 0)
                throw new ArgumentNullException("Key");

            // TDeclare the streams used
            // to decrypt to an in memory
            // array of bytes.
            MemoryStream msDecrypt = null;
            CryptoStream csDecrypt = null;
            StreamReader srDecrypt = null;

            // Declare the Aes object
            // used to decrypt the data.
            Aes aesAlg = null;

            // Declare the string used to hold
            // the decrypted text.
            string plaintext = null;

            try
            {
                // Create an Aes object
                // with the specified key and IV.
                aesAlg = Aes.Create();
                aesAlg.Key = Key;
                aesAlg.IV = IV;

                // Create a decrytor to perform the stream transform.
                ICryptoTransform decryptor = aesAlg.CreateDecryptor(aesAlg.Key, aesAlg.IV);

                // Create the streams used for decryption.
                msDecrypt = new MemoryStream(cipherText);
                csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read);
                srDecrypt = new StreamReader(csDecrypt);

                // Read the decrypted bytes from the decrypting stream
                // and place them in a string.
                plaintext = srDecrypt.ReadToEnd();
            }
            finally
            {
                // Clean things up.

                // Close the streams.
                if (srDecrypt != null)
                    srDecrypt.Close();
                if (csDecrypt != null)
                    csDecrypt.Close();
                if (msDecrypt != null)
                    msDecrypt.Close();

                // Clear the Aes object.
                if (aesAlg != null)
                    aesAlg.Clear();
            }

            return plaintext;
        };


Func<string, byte[]> stringToByteArray =
	(hex)  => Enumerable.Range(0, hex.Length)
                       .Where(x => x % 2 == 0)
                       .Select(x => Convert.ToByte(hex.Substring(x, 2), 16))
                       .ToArray();

var topPanel = panel.add_Panel(true);

var decrypt_Source = topPanel.title("Decrypt").add_TextArea();
var decrypt_Result = decrypt_Source.insert_Right().add_TextArea();

decrypt_Source.onTextChange(
	(text)=>{
				try
				{
					//text2.set_Text(text);
					var iv = text.subString(0,32);
					var cipher_Text = text.subString(32);
					var key = "0c9abc43b129a5a0c598b4752d4bde2e";

					var decryptedText = decryptStringFromBytes_AES(stringToByteArray(cipher_Text),
																   stringToByteArray(key),
																   stringToByteArray(iv));
					decrypt_Result.set_Text(decryptedText);
					decrypt_Source.white();
				}
				catch(Exception ex)
				{
					ex.log();
					decrypt_Source.pink();
				}
			});

var rawTextToDecrypt = "655f42836f84b716e6e00cc9829276c1b659672fb4b2509539806edec419fcef79c377847b33705a2e653697e76ed850f6433ac03224097e27311feab5ad9a0968bbb35e28de292d6118e9710651415b";
decrypt_Source.set_Text(rawTextToDecrypt);

return decrypt_Result.get_Text();

//using System.Security.Cryptography
//using System.IO;

## Decrypt using Javascript.html
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
</head>
<body>
<script src="http://crypto-js.googlecode.com/svn/tags/3.1/build/rollups/aes.js"></script>
<script src="http://crypto-js.googlecode.com/svn/tags/3.1/build/components/pad-nopadding.js"></script>
<script>
    var key = CryptoJS.enc.Hex.parse('0c9abc43b129a5a0c598b4752d4bde2e');
    var iv = CryptoJS.enc.Hex.parse('655f42836f84b716e6e00cc9829276c1');
    var data = CryptoJS.enc.Hex.parse('b659672fb4b2509539806edec419fcef79c377847b33705a2e653697e76ed850f6433ac03224097e27311feab5ad9a0968bbb35e28de292d6118e9710651415b');

    var encrypted = {};
    encrypted.key=key;
    encrypted.iv=iv;
    encrypted.ciphertext = data;

    var decrypted = CryptoJS.AES.decrypt(encrypted, key, { iv: iv, padding: CryptoJS.pad.NoPadding });
  document.write("<br /> decrypted "  + decrypted.toString(CryptoJS.enc.Utf8) );
    document.write("<br /> dec3: " + CryptoJS.enc.Hex.stringify(decrypted));
</script>
</body>
</html>

## Encrypt_Decrypt_roundTrip.cs
var key = "0c9abc43b129a5a0c598b4752dAAAAAA";
var iv = "655f42836f84b716e6e00cc982AAAAAA";
var original_Text = "This is some text";

var encrypted_Text = original_Text.encrypt_AES(key, iv);
var decrypted_Text = encrypted_Text.decrypt_AES(key,iv);
return @"
original_Text:{0}

encrypted_Text:{1}

decrypted_Text: {2}".format(original_Text,
  						encrypted_Text.hexString(),
							decrypted_Text)
					.trim();
//O2File:_Extra_methods_To_Add_to_Main_CodeBase.cs
	//based on code sample from this MSDN article: http://msdn.microsoft.com/en-us/library/system.security.cryptography.aes(v=vs.100).aspx)
	Func<byte[], byte[],byte[], string> decryptStringFromBytes_AES =
	(cipherText, Key, IV) =>
	{
	// Check arguments.
	if (cipherText == null \|\| cipherText.Length <= 0)
	throw new ArgumentNullException("cipherText");
	if (Key == null \|\| Key.Length <= 0)
	throw new ArgumentNullException("Key");
	if (IV == null \|\| IV.Length <= 0)
	throw new ArgumentNullException("Key");

	// TDeclare the streams used
	// to decrypt to an in memory
	// array of bytes.
	MemoryStream msDecrypt = null;
	CryptoStream csDecrypt = null;
	StreamReader srDecrypt = null;

	// Declare the Aes object
	// used to decrypt the data.
	Aes aesAlg = null;

	// Declare the string used to hold
	// the decrypted text.
	string plaintext = null;

	try
	{
	// Create an Aes object
	// with the specified key and IV.
	aesAlg = Aes.Create();
	aesAlg.Key = Key;
	aesAlg.IV = IV;

	// Create a decrytor to perform the stream transform.
	ICryptoTransform decryptor = aesAlg.CreateDecryptor(aesAlg.Key, aesAlg.IV);

	// Create the streams used for decryption.
	msDecrypt = new MemoryStream(cipherText);
	csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read);
	srDecrypt = new StreamReader(csDecrypt);

	// Read the decrypted bytes from the decrypting stream
	// and place them in a string.
	plaintext = srDecrypt.ReadToEnd();
	}
	finally
	{
	// Clean things up.

	// Close the streams.
	if (srDecrypt != null)
	srDecrypt.Close();
	if (csDecrypt != null)
	csDecrypt.Close();
	if (msDecrypt != null)
	msDecrypt.Close();

	// Clear the Aes object.
	if (aesAlg != null)
	aesAlg.Clear();
	}

	return plaintext;
	};




	Func<string, byte[]> stringToByteArray =
	(hex) => Enumerable.Range(0, hex.Length)
	.Where(x => x % 2 == 0)
	.Select(x => Convert.ToByte(hex.Substring(x, 2), 16))
	.ToArray();

	var topPanel = panel.add_Panel(true);

	var decrypt_Source = topPanel.title("Decrypt").add_TextArea();
	var decrypt_Result = decrypt_Source.insert_Right().add_TextArea();

	decrypt_Source.onTextChange(
	(text)=>{
	try
	{
	//text2.set_Text(text);
	var iv = text.subString(0,32);
	var cipher_Text = text.subString(32);
	var key = "0c9abc43b129a5a0c598b4752d4bde2e";

	var decryptedText = decryptStringFromBytes_AES(stringToByteArray(cipher_Text),
	stringToByteArray(key),
	stringToByteArray(iv));
	decrypt_Result.set_Text(decryptedText);
	decrypt_Source.white();
	}
	catch(Exception ex)
	{
	ex.log();
	decrypt_Source.pink();
	}
	});

	var rawTextToDecrypt = "655f42836f84b716e6e00cc9829276c1b659672fb4b2509539806edec419fcef79c377847b33705a2e653697e76ed850f6433ac03224097e27311feab5ad9a0968bbb35e28de292d6118e9710651415b";
	decrypt_Source.set_Text(rawTextToDecrypt);

	return decrypt_Result.get_Text();

	//using System.Security.Cryptography
	//using System.IO;
	<html xmlns="http://www.w3.org/1999/xhtml">
	<head>
	</head>
	<body>
	<script src="http://crypto-js.googlecode.com/svn/tags/3.1/build/rollups/aes.js"></script>
	<script src="http://crypto-js.googlecode.com/svn/tags/3.1/build/components/pad-nopadding.js"></script>
	<script>
	var key = CryptoJS.enc.Hex.parse('0c9abc43b129a5a0c598b4752d4bde2e');
	var iv = CryptoJS.enc.Hex.parse('655f42836f84b716e6e00cc9829276c1');
	var data = CryptoJS.enc.Hex.parse('b659672fb4b2509539806edec419fcef79c377847b33705a2e653697e76ed850f6433ac03224097e27311feab5ad9a0968bbb35e28de292d6118e9710651415b');

	var encrypted = {};
	encrypted.key=key;
	encrypted.iv=iv;
	encrypted.ciphertext = data;

	var decrypted = CryptoJS.AES.decrypt(encrypted, key, { iv: iv, padding: CryptoJS.pad.NoPadding });
	document.write("<br /> decrypted " + decrypted.toString(CryptoJS.enc.Utf8) );
	document.write("<br /> dec3: " + CryptoJS.enc.Hex.stringify(decrypted));
	</script>
	</body>
	</html>
	var key = "0c9abc43b129a5a0c598b4752dAAAAAA";
	var iv = "655f42836f84b716e6e00cc982AAAAAA";
	var original_Text = "This is some text";

	var encrypted_Text = original_Text.encrypt_AES(key, iv);
	var decrypted_Text = encrypted_Text.decrypt_AES(key,iv);
	return @"
	original_Text:{0}

	encrypted_Text:{1}

	decrypted_Text: {2}".format(original_Text,
	encrypted_Text.hexString(),
	decrypted_Text)
	.trim();
	//O2File:_Extra_methods_To_Add_to_Main_CodeBase.cs