/// <summary>
/// 解密
/// </summary>
/// <param name="cryptoText">密文</param>
/// <param name="decryptKey">解密密钥</param>
/// <returns></returns>
public string Decrypt(string cryptoText, string decryptKey)
{
if (!string.IsNullOrEmpty(decryptKey))
{
this.key = decryptKey;
mCrypto.Key = GetLegalKey();
}
byte[] arrCryptoText = Convert.FromBase64String(cryptoText);
using (MemoryStream stream = new MemoryStream(arrCryptoText, 0, arrCryptoText.Length))
{
ICryptoTransform decryptor = mCrypto.CreateDecryptor();
using (CryptoStream cStream = new CryptoStream(stream, decryptor, CryptoStreamMode.Read))
{
StreamReader reader = new StreamReader(cStream);
return(reader.ReadToEnd());
}
}
}
public override ICryptoTransform CreateDecryptor() => _impl.CreateDecryptor();
