public static byte[] Encrypt(byte[] dataToEncrypt, byte[] key, byte[] iv)
{
if (dataToEncrypt == null || dataToEncrypt.Length == 0)
{
return(null);
}
if (key == null)
{
throw new ArgumentNullException("key");
}
if (key.Length != AesKeyLength)
{
throw new ArgumentOutOfRangeException("key", "AES Key Length should always be " + AesKeyLength);
}
if (iv == null)
{
throw new ArgumentNullException("iv");
}
if (iv.Length != AesIVLength)
{
throw new ArgumentOutOfRangeException("iv", "AES IV Length should always be " + AesIVLength);
}
using (var res = aesCryptoServiceProviderPool.Get())
{
using (var encrypter = res.Data.CreateEncryptor(key, iv))
{
using (var ms = new MemoryStream())
{
ms.Write(iv, 0, AesIVLength);
using (var cs = new CryptoStream(ms, encrypter, CryptoStreamMode.Write))
{
cs.Write(dataToEncrypt, 0, dataToEncrypt.Length);
cs.FlushFinalBlock();
}
return(ms.ToArray());
}
}
}
}
public static bool VerifySha256Hash(byte[] hash, byte[] sign, byte[] n, byte[] e)
{
using (var rsa = rsaCryptoServiceProviderPool.Get())
{
var p = new RSAParameters()
{
Modulus = n, Exponent = e
};
rsa.Data.ImportParameters(p);
return(rsa.Data.VerifyHash(hash, sign, HashAlgorithmName.SHA256, RSASignaturePadding.Pkcs1));
}
}