从Action Script到C#的Rijndael加密

Question

我试图在Action Script和C#之间共享加密

我的任务是在C#中解密以下消息

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它使用Rijndael encyption,ECB模式(电子代码簿),密钥:Pas5pr @ se,128位密钥大小和块大小.

我遇到的问题是我似乎无法做到,有人帮我这个吗？

Answer 1

这是我的一个网站目前使用的Rijndael加密的实现.看看这是否有效:

using System;
using System.IO;
using System.Security.Cryptography;
using System.Text;

namespace CMS.Core.Domain
{
    /// <summary>
    /// Summary description for EncryptionManager
    /// </summary>
    public static class EncryptionManager
    {
        public static string EncryptRijndael(string value, string encryptionKey) {
            try {
                var key = Encoding.UTF8.GetBytes(encryptionKey); //must be 16 chars
                var rijndael = new RijndaelManaged {
                    BlockSize = 128,
                    IV = key,
                    KeySize = 128,
                    Key = key
                };

                var transform = rijndael.CreateEncryptor();
                using (var ms = new MemoryStream()) {
                    using (var cs = new CryptoStream(ms, transform, CryptoStreamMode.Write)) {
                        byte[] buffer = Encoding.UTF8.GetBytes(value);

                        cs.Write(buffer, 0, buffer.Length);
                        cs.FlushFinalBlock();
                        cs.Close();
                    }
                    ms.Close();
                    return Convert.ToBase64String(ms.ToArray());
                }
            }
            catch {
                return string.Empty;
            }
        }

        public static string DecryptRijndael(string value, string encryptionKey)
        {
            try
            {
                var key = Encoding.UTF8.GetBytes(encryptionKey); //must be 16 chars
                var rijndael = new RijndaelManaged
                                               {
                                                   BlockSize = 128,
                                                   IV = key,
                                                   KeySize = 128,
                                                   Key = key
                                               };

                var buffer = Convert.FromBase64String(value);
                var transform = rijndael.CreateDecryptor();
                string decrypted;
                using (var ms = new MemoryStream())
                {
                    using (var cs = new CryptoStream(ms, transform, CryptoStreamMode.Write))
                    {
                        cs.Write(buffer, 0, buffer.Length);
                        cs.FlushFinalBlock();
                        decrypted = Encoding.UTF8.GetString(ms.ToArray());
                        cs.Close();
                    }
                    ms.Close();
                }

                return decrypted;
            }
            catch
            {
                return null;
            }
        }
    }
}

更新

我刚注意到你输入的一件事是你的加密密钥只有9个字符而我上面的代码需要16个字符的密钥.我不确定这是否是Rijndael加密算法的硬性要求,但上述代码不适用于不完全是16个字符的加密密钥.