Usage Description:\nconst signer = new WbiSign();\nconst signedParams = signer.encWbi({ foo: 'bar', baz: 123 },'abc123_img_key','xyz456_sub_key');
目前為
此腳本不應該直接安裝，它是一個供其他腳本使用的函式庫。欲使用本函式庫，請在腳本 metadata 寫上： // @require https://update.cn-greasyfork.org/scripts/533087/1572488/WbiSign.js
// ==UserScript==
// @name WbiSign
// @namespace vruses
// @version 1.0
// @author layenh
// @description Usage Description:\nconst signer = new WbiSign();\nconst signedParams = signer.encWbi({ foo: 'bar', baz: 123 },'abc123_img_key','xyz456_sub_key');
// ==/UserScript==
/**
* Utility class for generating Wbi signature used in Bilibili API requests.
* @class
*/
class WbiSign {
constructor() {
this.mixinKeyEncTab = [
46, 47, 18, 2, 53, 8, 23, 32, 15, 50, 10, 31, 58, 3, 45, 35, 27, 43, 5,
49, 33, 9, 42, 19, 29, 28, 14, 39, 12, 38, 41, 13, 37, 48, 7, 16, 24, 55,
40, 61, 26, 17, 0, 1, 60, 51, 30, 4, 22, 25, 54, 21, 56, 59, 6, 63, 57,
62, 11, 36, 20, 34, 44, 52,
];
}
// 对 imgKey 和 subKey 进行字符顺序打乱编码
getMixinKey = (orig) =>
this.mixinKeyEncTab
.map((n) => orig[n])
.join("")
.slice(0, 32);
/**
* @param {Object} params - The parameters of a bili request.
* @param {string} img_key - A disguised field used as part of the signature generation.
* @param {string} sub_key - A disguised field paired with img_key to form a verification token.
* @return {string} - A URL query string including the original parameters,
* plus `wts` (timestamp) and `w_rid` (signature).
* @description 为请求参数进行 wbi 签名
*/
encWbi(params, img_key, sub_key) {
const mixin_key = this.getMixinKey(img_key + sub_key),
curr_time = Math.round(Date.now() / 1000),
chr_filter = /[!'()*]/g;
Object.assign(params, { wts: curr_time }); // 添加 wts 字段
// 按照 key 重排参数
const query = Object.keys(params)
.sort()
.map((key) => {
// 过滤 value 中的 "!'()*" 字符
const value = params[key].toString().replace(chr_filter, "");
return `${encodeURIComponent(key)}=${encodeURIComponent(value)}`;
})
.join("&");
const wbi_sign = SparkMD5.hash(query + mixin_key); // 计算 w_rid
return query + "&w_rid=" + wbi_sign;
}
}
const SparkMD5 = (function (undefined) {
"use strict";
/*
* Fastest md5 implementation around (JKM md5).
* Credits: Joseph Myers
*
* @see http://www.myersdaily.org/joseph/javascript/md5-text.html
* @see http://jsperf.com/md5-shootout/7
*/
/* this function is much faster,
so if possible we use it. Some IEs
are the only ones I know of that
need the idiotic second function,
generated by an if clause. */
var add32 = function (a, b) {
return (a + b) & 0xffffffff;
},
hex_chr = [
"0",
"1",
"2",
"3",
"4",
"5",
"6",
"7",
"8",
"9",
"a",
"b",
"c",
"d",
"e",
"f",
];
function cmn(q, a, b, x, s, t) {
a = add32(add32(a, q), add32(x, t));
return add32((a << s) | (a >>> (32 - s)), b);
}
function md5cycle(x, k) {
var a = x[0],
b = x[1],
c = x[2],
d = x[3];
a += (((b & c) | (~b & d)) + k[0] - 680876936) | 0;
a = (((a << 7) | (a >>> 25)) + b) | 0;
d += (((a & b) | (~a & c)) + k[1] - 389564586) | 0;
d = (((d << 12) | (d >>> 20)) + a) | 0;
c += (((d & a) | (~d & b)) + k[2] + 606105819) | 0;
c = (((c << 17) | (c >>> 15)) + d) | 0;
b += (((c & d) | (~c & a)) + k[3] - 1044525330) | 0;
b = (((b << 22) | (b >>> 10)) + c) | 0;
a += (((b & c) | (~b & d)) + k[4] - 176418897) | 0;
a = (((a << 7) | (a >>> 25)) + b) | 0;
d += (((a & b) | (~a & c)) + k[5] + 1200080426) | 0;
d = (((d << 12) | (d >>> 20)) + a) | 0;
c += (((d & a) | (~d & b)) + k[6] - 1473231341) | 0;
c = (((c << 17) | (c >>> 15)) + d) | 0;
b += (((c & d) | (~c & a)) + k[7] - 45705983) | 0;
b = (((b << 22) | (b >>> 10)) + c) | 0;
a += (((b & c) | (~b & d)) + k[8] + 1770035416) | 0;
a = (((a << 7) | (a >>> 25)) + b) | 0;
d += (((a & b) | (~a & c)) + k[9] - 1958414417) | 0;
d = (((d << 12) | (d >>> 20)) + a) | 0;
c += (((d & a) | (~d & b)) + k[10] - 42063) | 0;
c = (((c << 17) | (c >>> 15)) + d) | 0;
b += (((c & d) | (~c & a)) + k[11] - 1990404162) | 0;
b = (((b << 22) | (b >>> 10)) + c) | 0;
a += (((b & c) | (~b & d)) + k[12] + 1804603682) | 0;
a = (((a << 7) | (a >>> 25)) + b) | 0;
d += (((a & b) | (~a & c)) + k[13] - 40341101) | 0;
d = (((d << 12) | (d >>> 20)) + a) | 0;
c += (((d & a) | (~d & b)) + k[14] - 1502002290) | 0;
c = (((c << 17) | (c >>> 15)) + d) | 0;
b += (((c & d) | (~c & a)) + k[15] + 1236535329) | 0;
b = (((b << 22) | (b >>> 10)) + c) | 0;
a += (((b & d) | (c & ~d)) + k[1] - 165796510) | 0;
a = (((a << 5) | (a >>> 27)) + b) | 0;
d += (((a & c) | (b & ~c)) + k[6] - 1069501632) | 0;
d = (((d << 9) | (d >>> 23)) + a) | 0;
c += (((d & b) | (a & ~b)) + k[11] + 643717713) | 0;
c = (((c << 14) | (c >>> 18)) + d) | 0;
b += (((c & a) | (d & ~a)) + k[0] - 373897302) | 0;
b = (((b << 20) | (b >>> 12)) + c) | 0;
a += (((b & d) | (c & ~d)) + k[5] - 701558691) | 0;
a = (((a << 5) | (a >>> 27)) + b) | 0;
d += (((a & c) | (b & ~c)) + k[10] + 38016083) | 0;
d = (((d << 9) | (d >>> 23)) + a) | 0;
c += (((d & b) | (a & ~b)) + k[15] - 660478335) | 0;
c = (((c << 14) | (c >>> 18)) + d) | 0;
b += (((c & a) | (d & ~a)) + k[4] - 405537848) | 0;
b = (((b << 20) | (b >>> 12)) + c) | 0;
a += (((b & d) | (c & ~d)) + k[9] + 568446438) | 0;
a = (((a << 5) | (a >>> 27)) + b) | 0;
d += (((a & c) | (b & ~c)) + k[14] - 1019803690) | 0;
d = (((d << 9) | (d >>> 23)) + a) | 0;
c += (((d & b) | (a & ~b)) + k[3] - 187363961) | 0;
c = (((c << 14) | (c >>> 18)) + d) | 0;
b += (((c & a) | (d & ~a)) + k[8] + 1163531501) | 0;
b = (((b << 20) | (b >>> 12)) + c) | 0;
a += (((b & d) | (c & ~d)) + k[13] - 1444681467) | 0;
a = (((a << 5) | (a >>> 27)) + b) | 0;
d += (((a & c) | (b & ~c)) + k[2] - 51403784) | 0;
d = (((d << 9) | (d >>> 23)) + a) | 0;
c += (((d & b) | (a & ~b)) + k[7] + 1735328473) | 0;
c = (((c << 14) | (c >>> 18)) + d) | 0;
b += (((c & a) | (d & ~a)) + k[12] - 1926607734) | 0;
b = (((b << 20) | (b >>> 12)) + c) | 0;
a += ((b ^ c ^ d) + k[5] - 378558) | 0;
a = (((a << 4) | (a >>> 28)) + b) | 0;
d += ((a ^ b ^ c) + k[8] - 2022574463) | 0;
d = (((d << 11) | (d >>> 21)) + a) | 0;
c += ((d ^ a ^ b) + k[11] + 1839030562) | 0;
c = (((c << 16) | (c >>> 16)) + d) | 0;
b += ((c ^ d ^ a) + k[14] - 35309556) | 0;
b = (((b << 23) | (b >>> 9)) + c) | 0;
a += ((b ^ c ^ d) + k[1] - 1530992060) | 0;
a = (((a << 4) | (a >>> 28)) + b) | 0;
d += ((a ^ b ^ c) + k[4] + 1272893353) | 0;
d = (((d << 11) | (d >>> 21)) + a) | 0;
c += ((d ^ a ^ b) + k[7] - 155497632) | 0;
c = (((c << 16) | (c >>> 16)) + d) | 0;
b += ((c ^ d ^ a) + k[10] - 1094730640) | 0;
b = (((b << 23) | (b >>> 9)) + c) | 0;
a += ((b ^ c ^ d) + k[13] + 681279174) | 0;
a = (((a << 4) | (a >>> 28)) + b) | 0;
d += ((a ^ b ^ c) + k[0] - 358537222) | 0;
d = (((d << 11) | (d >>> 21)) + a) | 0;
c += ((d ^ a ^ b) + k[3] - 722521979) | 0;
c = (((c << 16) | (c >>> 16)) + d) | 0;
b += ((c ^ d ^ a) + k[6] + 76029189) | 0;
b = (((b << 23) | (b >>> 9)) + c) | 0;
a += ((b ^ c ^ d) + k[9] - 640364487) | 0;
a = (((a << 4) | (a >>> 28)) + b) | 0;
d += ((a ^ b ^ c) + k[12] - 421815835) | 0;
d = (((d << 11) | (d >>> 21)) + a) | 0;
c += ((d ^ a ^ b) + k[15] + 530742520) | 0;
c = (((c << 16) | (c >>> 16)) + d) | 0;
b += ((c ^ d ^ a) + k[2] - 995338651) | 0;
b = (((b << 23) | (b >>> 9)) + c) | 0;
a += ((c ^ (b | ~d)) + k[0] - 198630844) | 0;
a = (((a << 6) | (a >>> 26)) + b) | 0;
d += ((b ^ (a | ~c)) + k[7] + 1126891415) | 0;
d = (((d << 10) | (d >>> 22)) + a) | 0;
c += ((a ^ (d | ~b)) + k[14] - 1416354905) | 0;
c = (((c << 15) | (c >>> 17)) + d) | 0;
b += ((d ^ (c | ~a)) + k[5] - 57434055) | 0;
b = (((b << 21) | (b >>> 11)) + c) | 0;
a += ((c ^ (b | ~d)) + k[12] + 1700485571) | 0;
a = (((a << 6) | (a >>> 26)) + b) | 0;
d += ((b ^ (a | ~c)) + k[3] - 1894986606) | 0;
d = (((d << 10) | (d >>> 22)) + a) | 0;
c += ((a ^ (d | ~b)) + k[10] - 1051523) | 0;
c = (((c << 15) | (c >>> 17)) + d) | 0;
b += ((d ^ (c | ~a)) + k[1] - 2054922799) | 0;
b = (((b << 21) | (b >>> 11)) + c) | 0;
a += ((c ^ (b | ~d)) + k[8] + 1873313359) | 0;
a = (((a << 6) | (a >>> 26)) + b) | 0;
d += ((b ^ (a | ~c)) + k[15] - 30611744) | 0;
d = (((d << 10) | (d >>> 22)) + a) | 0;
c += ((a ^ (d | ~b)) + k[6] - 1560198380) | 0;
c = (((c << 15) | (c >>> 17)) + d) | 0;
b += ((d ^ (c | ~a)) + k[13] + 1309151649) | 0;
b = (((b << 21) | (b >>> 11)) + c) | 0;
a += ((c ^ (b | ~d)) + k[4] - 145523070) | 0;
a = (((a << 6) | (a >>> 26)) + b) | 0;
d += ((b ^ (a | ~c)) + k[11] - 1120210379) | 0;
d = (((d << 10) | (d >>> 22)) + a) | 0;
c += ((a ^ (d | ~b)) + k[2] + 718787259) | 0;
c = (((c << 15) | (c >>> 17)) + d) | 0;
b += ((d ^ (c | ~a)) + k[9] - 343485551) | 0;
b = (((b << 21) | (b >>> 11)) + c) | 0;
x[0] = (a + x[0]) | 0;
x[1] = (b + x[1]) | 0;
x[2] = (c + x[2]) | 0;
x[3] = (d + x[3]) | 0;
}
function md5blk(s) {
var md5blks = [],
i; /* Andy King said do it this way. */
for (i = 0; i < 64; i += 4) {
md5blks[i >> 2] =
s.charCodeAt(i) +
(s.charCodeAt(i + 1) << 8) +
(s.charCodeAt(i + 2) << 16) +
(s.charCodeAt(i + 3) << 24);
}
return md5blks;
}
function md5blk_array(a) {
var md5blks = [],
i; /* Andy King said do it this way. */
for (i = 0; i < 64; i += 4) {
md5blks[i >> 2] =
a[i] + (a[i + 1] << 8) + (a[i + 2] << 16) + (a[i + 3] << 24);
}
return md5blks;
}
function md51(s) {
var n = s.length,
state = [1732584193, -271733879, -1732584194, 271733878],
i,
length,
tail,
tmp,
lo,
hi;
for (i = 64; i <= n; i += 64) {
md5cycle(state, md5blk(s.substring(i - 64, i)));
}
s = s.substring(i - 64);
length = s.length;
tail = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
for (i = 0; i < length; i += 1) {
tail[i >> 2] |= s.charCodeAt(i) << (i % 4 << 3);
}
tail[i >> 2] |= 0x80 << (i % 4 << 3);
if (i > 55) {
md5cycle(state, tail);
for (i = 0; i < 16; i += 1) {
tail[i] = 0;
}
}
// Beware that the final length might not fit in 32 bits so we take care of that
tmp = n * 8;
tmp = tmp.toString(16).match(/(.*?)(.{0,8})$/);
lo = parseInt(tmp[2], 16);
hi = parseInt(tmp[1], 16) || 0;
tail[14] = lo;
tail[15] = hi;
md5cycle(state, tail);
return state;
}
function md51_array(a) {
var n = a.length,
state = [1732584193, -271733879, -1732584194, 271733878],
i,
length,
tail,
tmp,
lo,
hi;
for (i = 64; i <= n; i += 64) {
md5cycle(state, md5blk_array(a.subarray(i - 64, i)));
}
// Not sure if it is a bug, however IE10 will always produce a sub array of length 1
// containing the last element of the parent array if the sub array specified starts
// beyond the length of the parent array - weird.
// https://connect.microsoft.com/IE/feedback/details/771452/typed-array-subarray-issue
a = i - 64 < n ? a.subarray(i - 64) : new Uint8Array(0);
length = a.length;
tail = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
for (i = 0; i < length; i += 1) {
tail[i >> 2] |= a[i] << (i % 4 << 3);
}
tail[i >> 2] |= 0x80 << (i % 4 << 3);
if (i > 55) {
md5cycle(state, tail);
for (i = 0; i < 16; i += 1) {
tail[i] = 0;
}
}
// Beware that the final length might not fit in 32 bits so we take care of that
tmp = n * 8;
tmp = tmp.toString(16).match(/(.*?)(.{0,8})$/);
lo = parseInt(tmp[2], 16);
hi = parseInt(tmp[1], 16) || 0;
tail[14] = lo;
tail[15] = hi;
md5cycle(state, tail);
return state;
}
function rhex(n) {
var s = "",
j;
for (j = 0; j < 4; j += 1) {
s += hex_chr[(n >> (j * 8 + 4)) & 0x0f] + hex_chr[(n >> (j * 8)) & 0x0f];
}
return s;
}
function hex(x) {
var i;
for (i = 0; i < x.length; i += 1) {
x[i] = rhex(x[i]);
}
return x.join("");
}
// In some cases the fast add32 function cannot be used..
if (hex(md51("hello")) !== "5d41402abc4b2a76b9719d911017c592") {
add32 = function (x, y) {
var lsw = (x & 0xffff) + (y & 0xffff),
msw = (x >> 16) + (y >> 16) + (lsw >> 16);
return (msw << 16) | (lsw & 0xffff);
};
}
// ---------------------------------------------------
/**
* ArrayBuffer slice polyfill.
*
* @see https://github.com/ttaubert/node-arraybuffer-slice
*/
if (typeof ArrayBuffer !== "undefined" && !ArrayBuffer.prototype.slice) {
(function () {
function clamp(val, length) {
val = val | 0 || 0;
if (val < 0) {
return Math.max(val + length, 0);
}
return Math.min(val, length);
}
ArrayBuffer.prototype.slice = function (from, to) {
var length = this.byteLength,
begin = clamp(from, length),
end = length,
num,
target,
targetArray,
sourceArray;
if (to !== undefined) {
end = clamp(to, length);
}
if (begin > end) {
return new ArrayBuffer(0);
}
num = end - begin;
target = new ArrayBuffer(num);
targetArray = new Uint8Array(target);
sourceArray = new Uint8Array(this, begin, num);
targetArray.set(sourceArray);
return target;
};
})();
}
// ---------------------------------------------------
/**
* Helpers.
*/
function toUtf8(str) {
if (/[\u0080-\uFFFF]/.test(str)) {
str = unescape(encodeURIComponent(str));
}
return str;
}
function utf8Str2ArrayBuffer(str, returnUInt8Array) {
var length = str.length,
buff = new ArrayBuffer(length),
arr = new Uint8Array(buff),
i;
for (i = 0; i < length; i += 1) {
arr[i] = str.charCodeAt(i);
}
return returnUInt8Array ? arr : buff;
}
function arrayBuffer2Utf8Str(buff) {
return String.fromCharCode.apply(null, new Uint8Array(buff));
}
function concatenateArrayBuffers(first, second, returnUInt8Array) {
var result = new Uint8Array(first.byteLength + second.byteLength);
result.set(new Uint8Array(first));
result.set(new Uint8Array(second), first.byteLength);
return returnUInt8Array ? result : result.buffer;
}
function hexToBinaryString(hex) {
var bytes = [],
length = hex.length,
x;
for (x = 0; x < length - 1; x += 2) {
bytes.push(parseInt(hex.substr(x, 2), 16));
}
return String.fromCharCode.apply(String, bytes);
}
// ---------------------------------------------------
/**
* SparkMD5 OOP implementation.
*
* Use this class to perform an incremental md5, otherwise use the
* static methods instead.
*/
function SparkMD5() {
// call reset to init the instance
this.reset();
}
/**
* Appends a string.
* A conversion will be applied if an utf8 string is detected.
*
* @param {String} str The string to be appended
*
* @return {SparkMD5} The instance itself
*/
SparkMD5.prototype.append = function (str) {
// Converts the string to utf8 bytes if necessary
// Then append as binary
this.appendBinary(toUtf8(str));
return this;
};
/**
* Appends a binary string.
*
* @param {String} contents The binary string to be appended
*
* @return {SparkMD5} The instance itself
*/
SparkMD5.prototype.appendBinary = function (contents) {
this._buff += contents;
this._length += contents.length;
var length = this._buff.length,
i;
for (i = 64; i <= length; i += 64) {
md5cycle(this._hash, md5blk(this._buff.substring(i - 64, i)));
}
this._buff = this._buff.substring(i - 64);
return this;
};
/**
* Finishes the incremental computation, reseting the internal state and
* returning the result.
*
* @param {Boolean} raw True to get the raw string, false to get the hex string
*
* @return {String} The result
*/
SparkMD5.prototype.end = function (raw) {
var buff = this._buff,
length = buff.length,
i,
tail = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
ret;
for (i = 0; i < length; i += 1) {
tail[i >> 2] |= buff.charCodeAt(i) << (i % 4 << 3);
}
this._finish(tail, length);
ret = hex(this._hash);
if (raw) {
ret = hexToBinaryString(ret);
}
this.reset();
return ret;
};
/**
* Resets the internal state of the computation.
*
* @return {SparkMD5} The instance itself
*/
SparkMD5.prototype.reset = function () {
this._buff = "";
this._length = 0;
this._hash = [1732584193, -271733879, -1732584194, 271733878];
return this;
};
/**
* Gets the internal state of the computation.
*
* @return {Object} The state
*/
SparkMD5.prototype.getState = function () {
return {
buff: this._buff,
length: this._length,
hash: this._hash.slice(),
};
};
/**
* Gets the internal state of the computation.
*
* @param {Object} state The state
*
* @return {SparkMD5} The instance itself
*/
SparkMD5.prototype.setState = function (state) {
this._buff = state.buff;
this._length = state.length;
this._hash = state.hash;
return this;
};
/**
* Releases memory used by the incremental buffer and other additional
* resources. If you plan to use the instance again, use reset instead.
*/
SparkMD5.prototype.destroy = function () {
delete this._hash;
delete this._buff;
delete this._length;
};
/**
* Finish the final calculation based on the tail.
*
* @param {Array} tail The tail (will be modified)
* @param {Number} length The length of the remaining buffer
*/
SparkMD5.prototype._finish = function (tail, length) {
var i = length,
tmp,
lo,
hi;
tail[i >> 2] |= 0x80 << (i % 4 << 3);
if (i > 55) {
md5cycle(this._hash, tail);
for (i = 0; i < 16; i += 1) {
tail[i] = 0;
}
}
// Do the final computation based on the tail and length
// Beware that the final length may not fit in 32 bits so we take care of that
tmp = this._length * 8;
tmp = tmp.toString(16).match(/(.*?)(.{0,8})$/);
lo = parseInt(tmp[2], 16);
hi = parseInt(tmp[1], 16) || 0;
tail[14] = lo;
tail[15] = hi;
md5cycle(this._hash, tail);
};
/**
* Performs the md5 hash on a string.
* A conversion will be applied if utf8 string is detected.
*
* @param {String} str The string
* @param {Boolean} [raw] True to get the raw string, false to get the hex string
*
* @return {String} The result
*/
SparkMD5.hash = function (str, raw) {
// Converts the string to utf8 bytes if necessary
// Then compute it using the binary function
return SparkMD5.hashBinary(toUtf8(str), raw);
};
/**
* Performs the md5 hash on a binary string.
*
* @param {String} content The binary string
* @param {Boolean} [raw] True to get the raw string, false to get the hex string
*
* @return {String} The result
*/
SparkMD5.hashBinary = function (content, raw) {
var hash = md51(content),
ret = hex(hash);
return raw ? hexToBinaryString(ret) : ret;
};
// ---------------------------------------------------
/**
* SparkMD5 OOP implementation for array buffers.
*
* Use this class to perform an incremental md5 ONLY for array buffers.
*/
SparkMD5.ArrayBuffer = function () {
// call reset to init the instance
this.reset();
};
/**
* Appends an array buffer.
*
* @param {ArrayBuffer} arr The array to be appended
*
* @return {SparkMD5.ArrayBuffer} The instance itself
*/
SparkMD5.ArrayBuffer.prototype.append = function (arr) {
var buff = concatenateArrayBuffers(this._buff.buffer, arr, true),
length = buff.length,
i;
this._length += arr.byteLength;
for (i = 64; i <= length; i += 64) {
md5cycle(this._hash, md5blk_array(buff.subarray(i - 64, i)));
}
this._buff =
i - 64 < length
? new Uint8Array(buff.buffer.slice(i - 64))
: new Uint8Array(0);
return this;
};
/**
* Finishes the incremental computation, reseting the internal state and
* returning the result.
*
* @param {Boolean} raw True to get the raw string, false to get the hex string
*
* @return {String} The result
*/
SparkMD5.ArrayBuffer.prototype.end = function (raw) {
var buff = this._buff,
length = buff.length,
tail = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
i,
ret;
for (i = 0; i < length; i += 1) {
tail[i >> 2] |= buff[i] << (i % 4 << 3);
}
this._finish(tail, length);
ret = hex(this._hash);
if (raw) {
ret = hexToBinaryString(ret);
}
this.reset();
return ret;
};
/**
* Resets the internal state of the computation.
*
* @return {SparkMD5.ArrayBuffer} The instance itself
*/
SparkMD5.ArrayBuffer.prototype.reset = function () {
this._buff = new Uint8Array(0);
this._length = 0;
this._hash = [1732584193, -271733879, -1732584194, 271733878];
return this;
};
/**
* Gets the internal state of the computation.
*
* @return {Object} The state
*/
SparkMD5.ArrayBuffer.prototype.getState = function () {
var state = SparkMD5.prototype.getState.call(this);
// Convert buffer to a string
state.buff = arrayBuffer2Utf8Str(state.buff);
return state;
};
/**
* Gets the internal state of the computation.
*
* @param {Object} state The state
*
* @return {SparkMD5.ArrayBuffer} The instance itself
*/
SparkMD5.ArrayBuffer.prototype.setState = function (state) {
// Convert string to buffer
state.buff = utf8Str2ArrayBuffer(state.buff, true);
return SparkMD5.prototype.setState.call(this, state);
};
SparkMD5.ArrayBuffer.prototype.destroy = SparkMD5.prototype.destroy;
SparkMD5.ArrayBuffer.prototype._finish = SparkMD5.prototype._finish;
/**
* Performs the md5 hash on an array buffer.
*
* @param {ArrayBuffer} arr The array buffer
* @param {Boolean} [raw] True to get the raw string, false to get the hex one
*
* @return {String} The result
*/
SparkMD5.ArrayBuffer.hash = function (arr, raw) {
var hash = md51_array(new Uint8Array(arr)),
ret = hex(hash);
return raw ? hexToBinaryString(ret) : ret;
};
return SparkMD5;
})();