一个简单的方法来加密和用钥匙解密 [英] An easy way to encrypt and decrypt with a key

问题描述

我正在寻找一种简单的方法来加密和解密使用固定的密钥（这将存储在我的配置）的一些数据，并将结果作为字符串（base16或十六进制）。

类似

 字符串的myString =Hello World的; 
字符串的myKey =k2k3aij3h; 
串ENC =新算法（）加密（MyString的，的myKey）。 
串DEC =新Alrorithm（）解密（ENC，的myKey）; 
  

解决方案

试试这个

 私人常量字符串initVector =tu89geji340t89u2; 
 
私人const int的密钥长度= 256; 
 
公共静态字符串加密（字符串文本，字符串键）
 {
字节[] = initVectorBytes Encoding.UTF8.GetBytes（initVector）; 
字节[] = plainTextBytes Encoding.UTF8.GetBytes（文本）; 
 PasswordDeriveBytes密码=新PasswordDeriveBytes（密钥，NULL）; 
字节[] = keyBytes password.GetBytes（密钥/ 8）; 
 RijndaelManaged的symmetricKey =新RijndaelManaged的（）; 
 symmetricKey.Mode = CipherMode.CBC; 
 ICryptoTransform的加密= symmetricKey.CreateEncryptor（keyBytes，initVectorBytes）; 
的MemoryStream MemoryStream的=新的MemoryStream（）; 
的CryptoStream的CryptoStream =新的CryptoStream（MemoryStream的，加密，CryptoStreamMode.Write）; 
 cryptoStream.Write（plainTextBytes，0，plainTextBytes.Length）; 
 cryptoStream.FlushFinalBlock（）; 
字节[] =加密memoryStream.ToArray（）; 
 memoryStream.Close（）; 
 cryptoStream.Close（）; 
返回Convert.ToBase64String（加密）; 
} 
 
公共静态字符串解密（字符串EncryptedText，串键）
 {
字节[] = initVectorBytes Encoding.ASCII.GetBytes（initVector）; 
字节[] = DeEncryptedText Convert.FromBase64String（EncryptedText）; 
 PasswordDeriveBytes密码=新PasswordDeriveBytes（密钥，NULL）; 
字节[] = keyBytes password.GetBytes（密钥/ 8）; 
 RijndaelManaged的symmetricKey =新RijndaelManaged的（）; 
 symmetricKey.Mode = CipherMode.CBC; 
 ICryptoTransform的解密= symmetricKey.CreateDecryptor（keyBytes，initVectorBytes）; 
的MemoryStream MemoryStream的=新的MemoryStream（DeEncryptedText）; 
的CryptoStream的CryptoStream =新的CryptoStream（MemoryStream的，解密，CryptoStreamMode.Read）; 
字节[] = plainTextBytes新的字节[DeEncryptedText.Length] 
 INT decryptedByteCount = cryptoStream.Read（plainTextBytes，0，plainTextBytes.Length）; 
 memoryStream.Close（）; 
 cryptoStream.Close（）; 
返回Encoding.UTF8.GetString（plainTextBytes，0，decryptedByteCount）; 
} 
  

它的这里

I'm looking for an easy way to encrypt and decrypt some data using a fixed key (which will be stored in my configurations) and store the result as string (base16 or hex).

Something like

string myString = "hello world";
string myKey = "k2k3aij3h";
string enc = new Algorithm().Encrypt(myString, myKey);
string dec = new Alrorithm().Decrypt(enc, myKey);

解决方案

try this

       private const string initVector = "tu89geji340t89u2";

        private const int keysize = 256;

        public static string Encrypt(string Text, string Key)
        {
            byte[] initVectorBytes = Encoding.UTF8.GetBytes(initVector);
            byte[] plainTextBytes = Encoding.UTF8.GetBytes(Text);
            PasswordDeriveBytes password = new PasswordDeriveBytes(Key, null);
            byte[] keyBytes = password.GetBytes(keysize / 8);
            RijndaelManaged symmetricKey = new RijndaelManaged();
            symmetricKey.Mode = CipherMode.CBC;
            ICryptoTransform encryptor = symmetricKey.CreateEncryptor(keyBytes, initVectorBytes);
            MemoryStream memoryStream = new MemoryStream();
            CryptoStream cryptoStream = new CryptoStream(memoryStream, encryptor, CryptoStreamMode.Write);
            cryptoStream.Write(plainTextBytes, 0, plainTextBytes.Length);
            cryptoStream.FlushFinalBlock();
            byte[] Encrypted = memoryStream.ToArray();
            memoryStream.Close();
            cryptoStream.Close();
            return Convert.ToBase64String(Encrypted);
        }

        public static string Decrypt(string EncryptedText, string Key)
        {
            byte[] initVectorBytes = Encoding.ASCII.GetBytes(initVector);
            byte[] DeEncryptedText = Convert.FromBase64String(EncryptedText);
            PasswordDeriveBytes password = new PasswordDeriveBytes(Key, null);
            byte[] keyBytes = password.GetBytes(keysize / 8);
            RijndaelManaged symmetricKey = new RijndaelManaged();
            symmetricKey.Mode = CipherMode.CBC;
            ICryptoTransform decryptor = symmetricKey.CreateDecryptor(keyBytes, initVectorBytes);
            MemoryStream memoryStream = new MemoryStream(DeEncryptedText);
            CryptoStream cryptoStream = new CryptoStream(memoryStream, decryptor, CryptoStreamMode.Read);
            byte[] plainTextBytes = new byte[DeEncryptedText.Length];
            int decryptedByteCount = cryptoStream.Read(plainTextBytes, 0, plainTextBytes.Length);
            memoryStream.Close();
            cryptoStream.Close();
            return Encoding.UTF8.GetString(plainTextBytes, 0, decryptedByteCount);
        }

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