使用PHP和c＃的Mcrypt和base64
我已经在两个平台上编写了相同的方法，我认为这些方法应该会产生相同的结果但不会发生。 我用相同的密钥加密了相同的文本，结果不同。 有人能弄清楚为什么会这样吗？
字符串： 这是测试
密钥： 1234567812345678
PHP加密字符串： ybUaKwQlRNwOjJhxLWtLYQ ==
C＃加密字符串： r2YjEFPyDDacnPmDFcGTLA ==
C＃function
static string Encrypt(string plainText, string key) { string cipherText; var rijndael = new RijndaelManaged() { Key = Encoding.UTF8.GetBytes(key), Mode = CipherMode.ECB, BlockSize = 128, }; ICryptoTransform encryptor = rijndael.CreateEncryptor(rijndael.Key, rijndael.IV); using (var memoryStream = new MemoryStream()) { using (var cryptoStream = new CryptoStream(memoryStream, encryptor, CryptoStreamMode.Write)) { using (var streamWriter = new StreamWriter(cryptoStream)) { streamWriter.Write(plainText); streamWriter.Flush(); } cipherText = Convert.ToBase64String(memoryStream.ToArray()); //cryptoStream.FlushFinalBlock(); } } return cipherText; } private static string Decrypt(string cipherText, string key) { string plainText; byte[] cipherArray = Convert.FromBase64String(cipherText); var rijndael = new RijndaelManaged() { Key = Encoding.UTF8.GetBytes(key), Mode = CipherMode.ECB, BlockSize = 128 }; ICryptoTransform decryptor = rijndael.CreateDecryptor(rijndael.Key, rijndael.IV); using (var memoryStream = new MemoryStream(cipherArray)) { using (var cryptoStream = new CryptoStream(memoryStream, decryptor, CryptoStreamMode.Read)) { using (var streamReader = new StreamReader(cryptoStream)) { plainText = streamReader.ReadToEnd(); } } } return plainText; } PHP函数
function string_encrypt($string, $key) { $crypted_text = mcrypt_encrypt( MCRYPT_RIJNDAEL_128, $key, $string, MCRYPT_MODE_ECB ); return base64_encode($crypted_text); } function string_decrypt($encrypted_string, $key) { return mcrypt_decrypt( MCRYPT_RIJNDAEL_128, $key, base64_decode($encrypted_string), MCRYPT_MODE_ECB ); }
我在C＃中不是很好，我知道PHP函数运行正常。 因此，必须在C＃函数上完成一些事情。 可能是要加密的字符串应转换为拉丁字符。
C＃默认使用Rijndael填充并使用PKCS7。
这意味着你必须根据PKCS7填充你的PHP端，下面的代码应该工作：
function string_encrypt($string, $key) { $block = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_ECB); $padding = $block - (strlen($string) % $block); $string .= str_repeat(chr($padding), $padding); $crypted_text = mcrypt_encrypt( MCRYPT_RIJNDAEL_128, $key, $string, MCRYPT_MODE_ECB ); return base64_encode($crypted_text); }
有关详细信息，请参阅此处的第一个答案
我还应该补充一点，如果你想改变C＃方面而不是使用填充，请改为进行以下修改并留下PHP方面：
static string Encrypt(string plainText, string key) { string cipherText; var rijndael = new RijndaelManaged() { Key = Encoding.UTF8.GetBytes(key), Mode = CipherMode.ECB, BlockSize = 128, Padding = PaddingMode.Zeros, }; ICryptoTransform encryptor = rijndael.CreateEncryptor(rijndael.Key, null); using (var memoryStream = new MemoryStream()) { using (var cryptoStream = new CryptoStream(memoryStream, encryptor, CryptoStreamMode.Write)) { using (var streamWriter = new StreamWriter(cryptoStream)) { streamWriter.Write(plainText); streamWriter.Flush(); } //cipherText = Convert.ToBase64String(Encoding.UTF8.GetBytes(Encoding.UTF8.GetString(memoryStream.ToArray()))); cipherText = Convert.ToBase64String(memoryStream.ToArray()); //cryptoStream.FlushFinalBlock(); } } return cipherText; }