How to get CryptoJS.HmacSHA256 digest view in JS

Question

I need to create a string representation CryptoJS.HmacSHA256in digest (byte representation).

I need this because I have to duplicate the python code that generates such a digest in javascript:

print hmac.new("secret", "test", hashlib.sha256).digest()

') kb  > y+      : oΚ  H    '

The goal is to duplicate the behavior of the code above in javascript.

Could you suggest me how to do this?

Answer 1

If you need raw bytes, then CryptoJS doesn't seem to provide code for this. It is mentioned that this is due to the lack of compatibility with the browser for Uint8Arrayfriends.

, Vincenzo Ciancia:

CryptoJS.enc.u8array = {
    /**
     * Converts a word array to a Uint8Array.
     *
     * @param {WordArray} wordArray The word array.
     *
     * @return {Uint8Array} The Uint8Array.
     *
     * @static
     *
     * @example
     *
     *     var u8arr = CryptoJS.enc.u8array.stringify(wordArray);
     */
    stringify: function (wordArray) {
        // Shortcuts
        var words = wordArray.words;
        var sigBytes = wordArray.sigBytes;

        // Convert
        var u8 = new Uint8Array(sigBytes);
        for (var i = 0; i < sigBytes; i++) {
            var byte = (words[i >>> 2] >>> (24 - (i % 4) * 8)) & 0xff;
            u8[i]=byte;
        }

        return u8;
    },

    /**
     * Converts a Uint8Array to a word array.
     *
     * @param {string} u8Str The Uint8Array.
     *
     * @return {WordArray} The word array.
     *
     * @static
     *
     * @example
     *
     *     var wordArray = CryptoJS.enc.u8array.parse(u8arr);
     */
    parse: function (u8arr) {
        // Shortcut
        var len = u8arr.length;

        // Convert
        var words = [];
        for (var i = 0; i < len; i++) {
            words[i >>> 2] |= (u8arr[i] & 0xff) << (24 - (i % 4) * 8);
        }

        return CryptoJS.lib.WordArray.create(words, len);
    }
};

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Answer 2

JavaScript. , . Hex- hmac python, CryptoJS.

CryptoJS:

CryptoJS.HmacSHA256("test", "secret").toString(CryptoJS.enc.Hex)

Python:

hmac.new("secret", "test", hashlib.sha256).hexdigest()

.

0329a06b62cd16b33eb6792be8c60b158d89a2ee3a876fce9a881ebb488c0914