充气城堡 CRT 夏普,解密无法获取纯文本
测试失败
static void Main(string[] args) {
string toEncrypt = "This is a test string";
byte[] key = Encoding.ASCII.GetBytes("0123456789abcdef");
byte[] iv = { 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff };
Console.Write("n Plain: " + toEncrypt);
// create AES cipher
IBufferedCipher cipher = CipherUtilities.GetCipher("AES/CTR/NoPadding");
cipher.Init(true, new ParametersWithIV(ParameterUtilities.CreateKeyParameter("AES", key), iv));
// encrypted
byte[] input = Encoding.ASCII.GetBytes(toEncrypt);
byte[] encryptedBytes = cipher.DoFinal(input);
string base64EncryptedOutputString = Convert.ToBase64String(encryptedBytes);
Console.Write("n Base64Encrypted:" + base64EncryptedOutputString);
// decrypted
byte[] toDecrypt = Encoding.ASCII.GetBytes(base64EncryptedOutputString);
cipher.Init(false, new ParametersWithIV(ParameterUtilities.CreateKeyParameter("AES", key), iv));
byte[] plainBytes = cipher.DoFinal(toDecrypt);
Console.WriteLine("n Decrypted:" + Encoding.ASCII.GetString(plainBytes));
}
普通:这是一个测试字符串
Base64Encrypted:71WVSPK31A+QrCUyqppI56fQixMV
解密:??m?????z??=????4G???呃?
---> 解密与纯文本:)不同
问题是您缺少从 base64 到原始字节数组的转换。
而不是:
byte[] toDecrypt = Encoding.ASCII.GetBytes(base64EncryptedOutputString);
你需要:
byte[] toDecrypt = Convert.FromBase64String(base64EncryptedOutputString);
请参阅 MSDN