douwen5681 2008-10-22 04:03
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在C#中解密PHP加密字符串

I have a string encrypted in PHP that I would like to decrypt in C#. I used the tutorial below to do the encryption, but am having problems decrypting. Can anyone post an example on how to do this?

http://www.sanity-free.org/131/triple_des_between_php_and_csharp.html

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  • dongyan1974 2008-10-22 04:56
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    Hope this helps:

    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine(Decrypt("47794945c0230c3d"));
        }
    
        static string Decrypt(string input)
        {
            TripleDES tripleDes = TripleDES.Create();
            tripleDes.IV = Encoding.ASCII.GetBytes("password");
            tripleDes.Key = Encoding.ASCII.GetBytes("passwordDR0wSS@P6660juht");
            tripleDes.Mode = CipherMode.CBC;
            tripleDes.Padding = PaddingMode.Zeros;
    
            ICryptoTransform crypto = tripleDes.CreateDecryptor();
            byte[] decodedInput = Decoder(input);
            byte[] decryptedBytes = crypto.TransformFinalBlock(decodedInput, 0, decodedInput.Length);
            return Encoding.ASCII.GetString(decryptedBytes);
        }
    
        static byte[] Decoder(string input)
        {
            byte[] bytes = new byte[input.Length/2];
            int targetPosition = 0;
    
            for( int sourcePosition=0; sourcePosition<input.Length; sourcePosition+=2 )
            {
                string hexCode = input.Substring(sourcePosition, 2);
                bytes[targetPosition++] = Byte.Parse(hexCode, NumberStyles.AllowHexSpecifier);
            }
    
            return bytes;
        }
    }
    
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