加密/解密二进制数据加密-js

Question

我无法使用Crypto-JS成功加密二进制消息。我的数据在数组缓冲区中。我在 Angular 工作，我已经进行了一个简短的测试，效果很好。我正在与 WiFi 设备通信。以下测试使用简单的字符串工作正常，这证明加密和传输都正常工作。

var iv_hexString = this.buf2hex([146, 66, 191, 151, 23, 3, 113, 119, 231, 131, 133, 112, 79, 32, 114, 136]);
var key_hexString = this.buf2hex([123, 217, 20, 11, 24, 26, 85, 45, 114, 184, 27, 162, 37, 115, 222, 209, 241, 24, 175, 144, 175, 53, 196, 29, 24, 23, 17, 218, 131, 226, 53, 209]);
var key = CryptoJS.enc.Hex.parse(key_hexString);
var iv = CryptoJS.enc.Hex.parse(iv_hexString);
console.log('iv  = ' + iv);
console.log('key = ' + key);
let cli_verify = CryptoJS.AES.encrypt("1111222233334444555566667777888899990000aaaabbbbccccddddeeeeffff", key, {
mode: CryptoJS.mode.CTR,
iv: iv,
padding: CryptoJS.pad.NoPadding
});
console.log('Cipher Text = ', cli_verify.ciphertext.toString());

// Test by decoding some shit here. 
var decrypted = CryptoJS.AES.decrypt(cli_verify, key, {
mode: CryptoJS.mode.CTR,
iv: iv,
padding: CryptoJS.pad.NoPadding
});
console.log('Decrypted Output = ', decrypted.toString(CryptoJS.enc.Utf8));

这工作正常：

[ng] [console.log]: "iv  = 9242bf9717037177e78385704f207288"
[ng] [console.log]: "key = 7bd9140b181a552d72b81ba22573ded1f118af90af35c41d181711da83e235d1"
[ng] [console.log]: "Cipher Text = " "de3cfe57c4d6fc5a8218b9eb801ebd49d3bd6cbf9ecd1b62656be424c09ba1d72b8ea3b6f304752b514ff4dc086a63a5349534e08e110f4855108a8d96804af3"
[ng] [console.log]: "Decrypted Output = " "1111222233334444555566667777888899990000aaaabbbbccccddddeeeeffff"

问题是我的数据不在字符串中。它是二进制的，因此很难作为字符串传输。我对另一端的代码没有任何控制权，它需要这种格式。我的数据可能包含 256 个代码中的任何一个：

let myMessage = new Uint8Array([0x0a, 0x11, 0x00, 0xff, 0x30, 0x53, 0x22, 0x6a, 0x8f, 0x05, 0x16, 0x15, 0x88, 0xb5]);

谁能建议我如何格式化它，以便它将被 crypto-js 接受。在代码0x30的情况下，这当然是"0"。非常好。这很适合一根绳子。0x11和0x00：不太好！我尝试了以下方法：

var devPublic_hexString = this.buf2hex(this.device_Public_Key);
let cli_verify = CryptoJS.AES.encrypt(this.hex2a(devPublic_hexString), key, {
mode: CryptoJS.mode.CTR,
iv: iv,
padding: CryptoJS.pad.NoPadding
});
hex2a(hexx) {
var hex = hexx.toString();//force conversion
var str = '';
//for (var i = 0; (i < hex.length && hex.substr(i, 2) !== '00'); i += 2)
for (var i = 0; (i < hex.length); i += 2)
str += String.fromCharCode(parseInt(hex.substr(i, 2), 16));
return str;
}

仔细观察十六进制转储，有一些很好的线索：

预期结果 另一面：

5CFA82944E 79 6408 9C 0B 9A 4D D8 8F 06 C539AD C0 919B C7 CC 6A 0A 86 81 DD 5DAD 0B03

实际结果另一面：

5C C3 BA C2 82 C2 944E 79 6408 C29C 0BC29A 4DC3 98 C28F 06C3 85 39 C2 AD C380C2 91 C2

等。我厌倦了加粗匹配位，但你可以看到模式。问题是所有的 c2 和 c3 代码都是关于什么的？为什么0xfa与牛巴混淆？0x98和0xd8一样？还有0xc5 0x85...还有0xC0 0x80...这与使用解码错误的非法字符串有关吗？如何使用此库来获取我的二进制数据？

Answer 1

您的问题源于这样一个事实，即来自crypto-js的WordArray将处理输入，因为 UTF-8 字符串和代码点转换将发生。您需要使用单字节编码，例如 Latin-1。以下是在某些表示形式之间进行转换的方法：

const arrayToString = arr => arr.reduce((str, code) => str + String.fromCharCode(code), '');
const original = new Uint8Array([0x0a, 0x11, 0x00, 0xff, 0x30, 0x53, 0x22, 0x6a, 0x8f, 0x05, 0x16, 0x15, 0x88, 0xb5]);
const originalString = arrayToString(original);
// -> Hex 0a1100ff3053226a8f05161588b5
const encrypted = CryptoJS.AES.encrypt(CryptoJS.enc.Latin1.parse(originalString), 'secret');
const encryptedArray32 = Uint32Array.from(encrypted.ciphertext.words);
const encryptedArray8 = new Uint8Array(encryptedArray32.buffer);
// -> Hex f6b58e23281ed5323e80d22e6fb94752
const decryptedString = CryptoJS.AES.decrypt(encrypted, 'secret').toString(CryptoJS.enc.Latin1);
const decryptedArray8 = Uint8Array.from(Buffer.from(decryptedString, 'latin1'));
// -> Hex 0a1100ff3053226a8f05161588b5

Answer 2

你来了：

function hexdump(buffer, blockSize) {
blockSize = blockSize || 16;
var lines = [];
var hex = "0123456789ABCDEF";
for (var b = 0; b < buffer.length; b += blockSize) {
var block = buffer.slice(b, Math.min(b + blockSize, buffer.length));
var addr = ("0000" + b.toString(16)).slice(-4);
var codes = block.split('').map(function (ch) {
var code = ch.charCodeAt(0);
return " " + hex[(0xF0 & code) >> 4] + hex[0x0F & code];
}).join("");
codes += "   ".repeat(blockSize - block.length);
var chars = block.replace(/[x00-x1Fx20x80-x9F]/g, '.');
chars +=  " ".repeat(blockSize - block.length);
lines.push(addr + " " + codes + "  " + chars);
}
document.write("<pre>"+lines.join("n")+"</pre>");
}
test_data=String.fromCharCode.apply(null, Uint8Array.from({length:256},(v,k)=>k++));
encrypted_data=CryptoJS.AES.encrypt(btoa(test_data), "secret");
decrypted_data=atob(CryptoJS.AES.decrypt(encrypted_data, "secret").toString(CryptoJS.enc.Utf8));
hexdump(decrypted_data)

<html> 
<head> 
<script src="https://cdnjs.cloudflare.com/ajax/libs/crypto-js/3.1.2/rollups/aes.js"></script>
</head> 
<body>
</body> 
</html>