我有以下使用openssl_encrypt()功能加密消息的PHP代码。这是代码：
$ciphering = "AES-128-CTR";
$options = 0;
$encryption_iv = '5192001995060634';
$encryption_key = "TasKagitMakas";
function encrypt ($string) {
global $ciphering, $options, $encryption_iv, $encryption_key;
$encryption = openssl_encrypt($string, $ciphering,
$encryption_key, $options, $encryption_iv);
$encryption = strtr(base64_encode($encryption), '+/=', '-_,');
return $encryption;
}
我试图逆转上述过程，并使用CryptoJS获得Javascript实现。这是我想出的：
var str = "bzB5UVNBclRHbWhlQUs4aHJoMHVxR1BJNEF1Sk9BRkpvbEpBRDFnVmg0MEx4RGtqWllvdUIrSW0vZGY3eG1KMVd2b2JxRFlOTnJ6N2FnPT0,";
str = str.split("-").join("+");
str = str.split("_").join("/");
str = str.split(",").join("=");
var encrypted = CryptoJS.enc.Base64.parse(str);
var encryptedStr = encrypted.toString(CryptoJS.enc.Utf8);
var key = "TasKagitMakas";
var iv = "5192001995060634";
var decrypted = CryptoJS.AES.decrypt(encryptedStr, key, {iv: iv, mode: CryptoJS.mode.CTR});
console.log(decrypted.toString(CryptoJS.enc.Utf8));
这段代码给了我空白的输出，什么也没有。我在这里做错了什么？我该如何纠正我的实施？
PHP代码：
openssl_encrypt用零值填充密钥，直到达到指定的密钥长度，即密钥TasKagitMakas扩展为TasKagitMakas\0\0\0。$options = 0表示密文是隐式Base64编码的。由于密文此后再次经过显式的Base64编码，因此它总共被Base64编码两次。这是不必要的，应使用进行更改$options = OPENSSL_RAW_DATA。openssl_encrypt自动禁用默认的PKCS7填充。JavaScript代码：
WordArray使用Utf8编码器将Key和IV解析为。必须使用扩展密钥。CryptoJS.AES.decrypt期望密文作为CipherParams对象。以下JavaScript代码解密密文：
var str = "bzB5UVNBclRHbWhlQUs4aHJoMHVxR1BJNEF1Sk9BRkpvbEpBRDFnVmg0MEx4RGtqWllvdUIrSW0vZGY3eG1KMVd2b2JxRFlOTnJ6N2FnPT0,";
str = str.split("-").join("+");
str = str.split("_").join("/");
str = str.split(",").join("=");
var encrypted = CryptoJS.enc.Base64.parse(str); // Base64 decode twice (as long as this happens in the PHP code)
var encrypted = encrypted.toString(CryptoJS.enc.Utf8);
var encrypted = CryptoJS.enc.Base64.parse(encrypted);
var key = CryptoJS.enc.Utf8.parse("TasKagitMakas\0\0\0"); // Expand the key and use the Utf8 encoder
var iv = CryptoJS.enc.Utf8.parse("5192001995060634"); // Use the Utf8 encoder
var decrypted = CryptoJS.AES.decrypt(
{
ciphertext: encrypted // Pass teh ciphertext as CipherParams object
},
key,
{
iv: iv,
mode: CryptoJS.mode.CTR,
padding: CryptoJS.pad.NoPadding // Disable the PKCS7 padding
});
console.log(decrypted.toString(CryptoJS.enc.Utf8));<script src="https://cdnjs.cloudflare.com/ajax/libs/crypto-js/4.0.0/crypto-js.min.js"></script>输出：
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