每次我运行这个并加密时,输出都是可变的,当我尝试解密时
我收到“填充无效且无法删除”。已经和这个斗争了一两天了,我很茫然。
private static string strIV = "abcdefghijklmnmo"; //The initialization vector.
private static string strKey = "abcdefghijklmnmoabcdefghijklmnmo"; //The key used to encrypt the text.
public static string Decrypt(string TextToDecrypt)
{
return Decryptor(TextToDecrypt);
}
private static string Encryptor(string TextToEncrypt)
{
//Turn the plaintext into a byte array.
byte[] PlainTextBytes = System.Text.ASCIIEncoding.ASCII.GetBytes(TextToEncrypt);
//Setup the AES providor for our purposes.
AesCryptoServiceProvider aesProvider = new AesCryptoServiceProvider();
aesProvider.Key = System.Text.Encoding.ASCII.GetBytes(strKey);
aesProvider.IV = System.Text.Encoding.ASCII.GetBytes(strIV);
aesProvider.BlockSize = 128;
aesProvider.KeySize = 256;
aesProvider.Padding = PaddingMode.PKCS7;
aesProvider.Mode = CipherMode.CBC;
ICryptoTransform cryptoTransform = aesProvider.CreateEncryptor(aesProvider.Key, aesProvider.IV);
byte[] EncryptedBytes = cryptoTransform.TransformFinalBlock(PlainTextBytes, 0, PlainTextBytes.Length);
return Convert.ToBase64String(EncryptedBytes);
}
private static string Decryptor(string TextToDecrypt)
{
byte[] EncryptedBytes = Convert.FromBase64String(TextToDecrypt);
//Setup the AES provider for decrypting.
AesCryptoServiceProvider aesProvider = new AesCryptoServiceProvider();
aesProvider.Key = System.Text.Encoding.ASCII.GetBytes(strKey);
aesProvider.IV = System.Text.Encoding.ASCII.GetBytes(strIV);
aesProvider.BlockSize = 128;
aesProvider.KeySize = 256;
aesProvider.Padding = PaddingMode.PKCS7;
aesProvider.Mode = CipherMode.CBC;
ICryptoTransform cryptoTransform = aesProvider.CreateDecryptor(aesProvider.Key, aesProvider.IV);
byte[] DecryptedBytes = cryptoTransform.TransformFinalBlock(EncryptedBytes, 0, EncryptedBytes.Length);
return System.Text.Encoding.ASCII.GetString(DecryptedBytes);
}
}
您需要设置BlockSize
和KeySize
在您设置之前Key
和IV
。此外,您可能应该为每条消息生成一个随机 IV,并注意ICryptoTransform
实施IDisposable
所以这些物体应该被处理掉。
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