using System;
using System.IO;
using System.Security.Cryptography;
namespace PS_WSSDeploy_Package.Utils
{
class Crypto
{
public static byte[] EncryptStringToBytes_AES(string plainText, byte[] key, byte[] iv)
{
if (string.IsNullOrEmpty(plainText))
throw new ArgumentNullException("plainText");
if (key == null || key.Length <= 0)
throw new ArgumentNullException("key");
if (iv == null || iv.Length <= 0)
throw new ArgumentNullException("key");
MemoryStream msEncrypt;
RijndaelManaged aesAlg = null;
try
{
aesAlg = new RijndaelManaged();
aesAlg.Key = key;
aesAlg.IV = iv;
ICryptoTransform encryptor = aesAlg.CreateEncryptor(aesAlg.Key, aesAlg.IV);
msEncrypt = new MemoryStream();
using (var csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write))
{
using (var swEncrypt = new StreamWriter(csEncrypt))
{
swEncrypt.Write(plainText);
}
}
}
finally
{
if (aesAlg != null)
{
aesAlg.Clear();
}
}
return msEncrypt.ToArray();
}
public static string DecryptStringFromBytes_AES(byte[] cipherText, byte[] Key, byte[] IV)
{
if (cipherText == null || cipherText.Length <= 0)
throw new ArgumentNullException("cipherText");
if (Key == null || Key.Length <= 0)
throw new ArgumentNullException("Key");
if (IV == null || IV.Length <= 0)
throw new ArgumentNullException("Key");
RijndaelManaged aesAlg = null;
string plaintext = null;
try
{
aesAlg = new RijndaelManaged();
aesAlg.Key = Key;
aesAlg.IV = IV;
var decryptor = aesAlg.CreateDecryptor(aesAlg.Key, aesAlg.IV);
using (var msDecrypt = new MemoryStream(cipherText))
{
using (var csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read))
{
using (var srDecrypt = new StreamReader(csDecrypt))
{
plaintext = srDecrypt.ReadToEnd();
}
}
}
}
finally
{
if (aesAlg != null)
{
aesAlg.Clear();
}
}
return plaintext;
}
}
}