AES加密、解密算法 C#版

首先别忘了引用这个空间：using System.Security.Cryptography;

参数是byte[]类型的：

 #region        /// <summary>        /// AES加密        /// </summary>        /// <param name="Data">被加密的明文</param>        /// <param name="Key">密钥</param>        /// <param name="Vector">向量</param>        /// <returns>密文</returns>        public static Byte[] AESEncrypt(Byte[] Data, String Key, String Vector)        {            Byte[] bKey = new Byte[32];            Array.Copy(Encoding.UTF8.GetBytes(Key.PadRight(bKey.Length)), bKey, bKey.Length);            Byte[] bVector = new Byte[16];            Array.Copy(Encoding.UTF8.GetBytes(Vector.PadRight(bVector.Length)), bVector, bVector.Length);            Byte[] Cryptograph = null; // 加密后的密文            Rijndael Aes = Rijndael.Create();            try            {                // 开辟一块内存流                using (MemoryStream Memory = new MemoryStream())                {                    // 把内存流对象包装成加密流对象                    using (CryptoStream Encryptor = new CryptoStream(Memory,                     Aes.CreateEncryptor(bKey, bVector),                     CryptoStreamMode.Write))                    {                        // 明文数据写入加密流                        Encryptor.Write(Data, 0, Data.Length);                        Encryptor.FlushFinalBlock();                        Cryptograph = Memory.ToArray();                    }                }            }            catch            {                Cryptograph = null;            }            return Cryptograph;        }        /// <summary>        /// AES解密        /// </summary>        /// <param name="Data">被解密的密文</param>        /// <param name="Key">密钥</param>        /// <param name="Vector">向量</param>        /// <returns>明文</returns>        public static Byte[] AESDecrypt(Byte[] Data, String Key, String Vector)        {            Byte[] bKey = new Byte[32];            Array.Copy(Encoding.UTF8.GetBytes(Key.PadRight(bKey.Length)), bKey, bKey.Length);            Byte[] bVector = new Byte[16];            Array.Copy(Encoding.UTF8.GetBytes(Vector.PadRight(bVector.Length)), bVector, bVector.Length);            Byte[] original = null; // 解密后的明文            Rijndael Aes = Rijndael.Create();            try            {                // 开辟一块内存流，存储密文                using (MemoryStream Memory = new MemoryStream(Data))                {                    // 把内存流对象包装成加密流对象                    using (CryptoStream Decryptor = new CryptoStream(Memory,                    Aes.CreateDecryptor(bKey, bVector),                    CryptoStreamMode.Read))                    {                        // 明文存储区                        using (MemoryStream originalMemory = new MemoryStream())                        {                            Byte[] Buffer = new Byte[1024];                            Int32 readBytes = 0;                            while ((readBytes = Decryptor.Read(Buffer, 0, Buffer.Length)) > 0)                            {                                originalMemory.Write(Buffer, 0, readBytes);                            }                            original = originalMemory.ToArray();                        }                    }                }            }            catch            {                original = null;            }            return original;        }        #endregion 

参数是string类型的：

 #region        /// <summary>        /// 获取密钥        /// </summary>        private static string Key        {            get { return @")O[NB]6,YF}+efcaj{+oESb9d8>Z'e9M"; }        }        /// <summary>        /// 获取向量        /// </summary>        private static string IV        {            get { return @"L+\~f4,Ir)b$=pkf"; }        }        /// <summary>        /// AES加密        /// </summary>        /// <param name="plainStr">明文字符串</param>        /// <returns>密文</returns>        public static string AESEncrypt(string plainStr)        {            byte[] bKey = Encoding.UTF8.GetBytes(Key);            byte[] bIV = Encoding.UTF8.GetBytes(IV);            byte[] byteArray = Encoding.UTF8.GetBytes(plainStr);            string encrypt = null;            Rijndael aes = Rijndael.Create();            using (MemoryStream mStream = new MemoryStream())            {                using (CryptoStream cStream = new CryptoStream(mStream, aes.CreateEncryptor(bKey, bIV), CryptoStreamMode.Write))                {                    cStream.Write(byteArray, 0, byteArray.Length);                    cStream.FlushFinalBlock();                    encrypt = Convert.ToBase64String(mStream.ToArray());                }            }            aes.Clear();            return encrypt;        }        /// <summary>        /// AES加密        /// </summary>        /// <param name="plainStr">明文字符串</param>        /// <param name="returnNull">加密失败时是否返回 null，false 返回 String.Empty</param>        /// <returns>密文</returns>        public static string AESEncrypt(string plainStr, bool returnNull)        {            string encrypt = AESEncrypt(plainStr);            return returnNull ? encrypt : (encrypt == null ? String.Empty : encrypt);        }        /// <summary>        /// AES解密        /// </summary>        /// <param name="encryptStr">密文字符串</param>        /// <returns>明文</returns>        public static string AESDecrypt(string encryptStr)        {            byte[] bKey = Encoding.UTF8.GetBytes(Key);            byte[] bIV = Encoding.UTF8.GetBytes(IV);            byte[] byteArray = Convert.FromBase64String(encryptStr);            string decrypt = null;            Rijndael aes = Rijndael.Create();            using (MemoryStream mStream = new MemoryStream())            {                using (CryptoStream cStream = new CryptoStream(mStream, aes.CreateDecryptor(bKey, bIV), CryptoStreamMode.Write))                {                    cStream.Write(byteArray, 0, byteArray.Length);                    cStream.FlushFinalBlock();                    decrypt = Encoding.UTF8.GetString(mStream.ToArray());                }            }            aes.Clear();            return decrypt;        }        /// <summary>        /// AES解密        /// </summary>        /// <param name="encryptStr">密文字符串</param>        /// <param name="returnNull">解密失败时是否返回 null，false 返回 String.Empty</param>        /// <returns>明文</returns>        public static string AESDecrypt(string encryptStr, bool returnNull)        {            string decrypt = AESDecrypt(encryptStr);            return returnNull ? decrypt : (decrypt == null ? String.Empty : decrypt);        }        #endregion

 

256位AES加密算法，参数是string类型的：

 #region        /// <summary>        /// 256位AES加密        /// </summary>        /// <param name="toEncrypt"></param>        /// <returns></returns>        public static string Encrypt(string toEncrypt)        {            // 256-AES key                byte[] keyArray = UTF8Encoding.UTF8.GetBytes("12345678901234567890123456789012");            byte[] toEncryptArray = UTF8Encoding.UTF8.GetBytes(toEncrypt);            RijndaelManaged rDel = new RijndaelManaged();            rDel.Key = keyArray;            rDel.Mode = CipherMode.ECB;            rDel.Padding = PaddingMode.PKCS7;            ICryptoTransform cTransform = rDel.CreateEncryptor();            byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);            return Convert.ToBase64String(resultArray, 0, resultArray.Length);        }        /// <summary>        /// 256位AES解密        /// </summary>        /// <param name="toDecrypt"></param>        /// <returns></returns>        public static string Decrypt(string toDecrypt)        {            // 256-AES key                byte[] keyArray = UTF8Encoding.UTF8.GetBytes("12345678901234567890123456789012");            byte[] toEncryptArray = Convert.FromBase64String(toDecrypt);            RijndaelManaged rDel = new RijndaelManaged();            rDel.Key = keyArray;            rDel.Mode = CipherMode.ECB;            rDel.Padding = PaddingMode.PKCS7;            ICryptoTransform cTransform = rDel.CreateDecryptor();            byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);            return UTF8Encoding.UTF8.GetString(resultArray);        }        #endregion