有一個C＃的加密解密方法，希望有在JAVA

-2

private static string Encrypt(string plainText) 
{ 
    byte[] keyBytes = Encoding.UTF8.GetBytes(_secretKey); 
    byte[] hashedKeyBytes = new SHA256CryptoServiceProvider().ComputeHash(keyBytes); 
    var secretKeyHashString = string.Concat(hashedKeyBytes.Select(hb => hb.ToString("x2"))); 
    byte[] cryptoKeyHash = new SHA256CryptoServiceProvider().ComputeHash(Encoding.UTF8.GetBytes(secretKeyHashString)); 
    byte[] cryptoKey = cryptoKeyHash.Take(16).ToArray(); 

    var aes = new AesCryptoServiceProvider() 
    { 
     Padding = PaddingMode.PKCS7, 
     Key = cryptoKey, 
     Mode = CipherMode.CBC, 
     IV = _initialisationVector 
    }; 

    RijndaelManaged aesEnc = new RijndaelManaged(); 
    byte[] plainTextBytes = Encoding.UTF8.GetBytes(plainText); 

    var encryptor = aes.CreateEncryptor(); 
    byte[] encryptedBytes = encryptor.TransformFinalBlock(plainTextBytes, 0, plainTextBytes.Length); 
    var encryptedString = Convert.ToBase64String(encryptedBytes); 

    return encryptedString; 
} 

private static string Decrypt(string encryptedText) 
{ 
    byte[] keyBytes = Encoding.UTF8.GetBytes(_secretKey); 
    byte[] hashedKeyBytes = new SHA256CryptoServiceProvider().ComputeHash(keyBytes); 
    var secretKeyHashString = string.Concat(hashedKeyBytes.Select(hb => hb.ToString("x2"))); 
    byte[] cryptoKeyHash = new SHA256CryptoServiceProvider().ComputeHash(Encoding.UTF8.GetBytes(secretKeyHashString)); 
    byte[] cryptoKey = cryptoKeyHash.Take(16).ToArray(); 

    byte[] initialisationVector = { 0, 133, 36, 86, 84, 150, 188, 164, 28, 210, 112, 158, 141, 87, 11, 227 }; 
    var aes = new AesCryptoServiceProvider() 
    { 
     Padding = PaddingMode.PKCS7, 
     Key = cryptoKey, 
     Mode = CipherMode.CBC, 
     IV = _initialisationVector 
    }; 
    var decryptor = aes.CreateDecryptor(); 

    var encryptedBytes = Convert.FromBase64String(encryptedText); 
    var decryptedBytes = decryptor.TransformFinalBlock(encryptedBytes, 0, encryptedBytes.Length); 
    var decryptedString = Encoding.UTF8.GetString(decryptedBytes); 

    return decryptedString; 
}

來源

2015-06-04 user3932597