调用方式：
import { MD5 } from './MD5';
let str = 'hello';
let res = MD5.instance.hex_md5(str);工具类代码如下：
export class MD5 {
private static _instance = null;
private hexcase = 0; /* hex output format. 0 - lowercase; 1 - uppercase */
private b64pad = ""; /* base-64 pad character. "=" for strict RFC compliance */
static get instance (){
if (!this._instance) {
this._instance = new MD5();
}
return this._instance;
}
public constructor() {
}
/*
* These are the privates you'll usually want to call
* They take string arguments and return either hex or base-64 encoded strings
*/
public hex_md5(s: string) { return this.rstr2hex(this.rstr_md5(this.str2rstr_utf8(s))); }//这个函数就行了，
public b64_md5(s: string) { return this.rstr2b64(this.rstr_md5(this.str2rstr_utf8(s))); }
public any_md5(s: string, e: string) { return this.rstr2any(this.rstr_md5(this.str2rstr_utf8(s)), e); }
public hex_hmac_md5(k: string, d: string) { return this.rstr2hex(this.rstr_hmac_md5(this.str2rstr_utf8(k), this.str2rstr_utf8(d))); }
private b64_hmac_md5(k: string, d: string) { return this.rstr2b64(this.rstr_hmac_md5(this.str2rstr_utf8(k), this.str2rstr_utf8(d))); }
private any_hmac_md5(k: string, d: string, e: string) { return this.rstr2any(this.rstr_hmac_md5(this.str2rstr_utf8(k), this.str2rstr_utf8(d)), e); }
/*
* Perform a simple self-test to see if the VM is working
*/
public md5_vm_test() {
return this.hex_md5("abc").toLowerCase() == "900150983cd24fb0d6963f7d28e17f72";
}
/*
* Calculate the MD5 of a raw string
*/
public rstr_md5(s: string) {
return this.binl2rstr(this.binl_md5(this.rstr2binl(s), s.length * 8));
}
/*
* Calculate the HMAC-MD5, of a key and some data (raw strings)
*/
public rstr_hmac_md5(key: string, data: string) {
var bkey = this.rstr2binl(key);
if (bkey.length > 16) bkey = this.binl_md5(bkey, key.length * 8);
var ipad = Array(16), opad = Array(16);
for (var i = 0; i < 16; i++) {
ipad[i] = bkey[i] ^ 0x36363636;
opad[i] = bkey[i] ^ 0x5C5C5C5C;
}
var hash = this.binl_md5(ipad.concat(this.rstr2binl(data)), 512 + data.length * 8);
return this.binl2rstr(this.binl_md5(opad.concat(hash), 512 + 128));
}
/*
* Convert a raw string to a hex string
*/
public rstr2hex(input: string) {
try { this.hexcase } catch (e) { this.hexcase = 0; }
var hex_tab = this.hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
var output = "";
var x;
for (var i = 0; i < input.length; i++) {
x = input.charCodeAt(i);
output += hex_tab.charAt((x >>> 4) & 0x0F)
+ hex_tab.charAt(x & 0x0F);
}
return output;
}
/*
* Convert a raw string to a base-64 string
*/
public rstr2b64(input: string) {
try { this.b64pad } catch (e) { this.b64pad = ''; }
var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
var output = "";
var len = input.length;
for (var i = 0; i < len; i += 3) {
var triplet = (input.charCodeAt(i) << 16)
| (i + 1 < len ? input.charCodeAt(i + 1) << 8 : 0)
| (i + 2 < len ? input.charCodeAt(i + 2) : 0);
for (var j = 0; j < 4; j++) {
if (i * 8 + j * 6 > input.length * 8) output += this.b64pad;
else output += tab.charAt((triplet >>> 6 * (3 - j)) & 0x3F);
}
}
return output;
}
/*
* Convert a raw string to an arbitrary string encoding
*/
public rstr2any(input: string, encoding: string) {
var divisor = encoding.length;
var i, j, q, x, quotient;
/* Convert to an array of 16-bit big-endian values, forming the dividend */
var dividend = Array(Math.ceil(input.length / 2));
for (i = 0; i < dividend.length; i++) {
dividend[i] = (input.charCodeAt(i * 2) << 8) | input.charCodeAt(i * 2 + 1);
}
/*
* Repeatedly perform a long division. The binary array forms the dividend,
* the length of the encoding is the divisor. Once computed, the quotient
* forms the dividend for the next step. All remainders are stored for later
* use.
*/
var full_length = Math.ceil(input.length * 8 /
(Math.log(encoding.length) / Math.log(2)));
var remainders = Array(full_length);
for (j = 0; j < full_length; j++) {
quotient = Array();
x = 0;
for (i = 0; i < dividend.length; i++) {
x = (x << 16) + dividend[i];
q = Math.floor(x / divisor);
x -= q * divisor;
if (quotient.length > 0 || q > 0)
quotient[quotient.length] = q;
}
remainders[j] = x;
dividend = quotient;
}
/* Convert the remainders to the output string */
var output = "";
for (i = remainders.length - 1; i >= 0; i--)
output += encoding.charAt(remainders[i]);
return output;
}
/*
* Encode a string as utf-8.
* For efficiency, this assumes the input is valid utf-16.
*/
public str2rstr_utf8(input: string) {
var output = "";
var i = -1;
var x, y;
while (++i < input.length) {
/* Decode utf-16 surrogate pairs */
x = input.charCodeAt(i);
y = i + 1 < input.length ? input.charCodeAt(i + 1) : 0;
if (0xD800 <= x && x <= 0xDBFF && 0xDC00 <= y && y <= 0xDFFF) {
x = 0x10000 + ((x & 0x03FF) << 10) + (y & 0x03FF);
i++;
}
/* Encode output as utf-8 */
if (x <= 0x7F)
output += String.fromCharCode(x);
else if (x <= 0x7FF)
output += String.fromCharCode(0xC0 | ((x >>> 6) & 0x1F),
0x80 | (x & 0x3F));
else if (x <= 0xFFFF)
output += String.fromCharCode(0xE0 | ((x >>> 12) & 0x0F),
0x80 | ((x >>> 6) & 0x3F),
0x80 | (x & 0x3F));
else if (x <= 0x1FFFFF)
output += String.fromCharCode(0xF0 | ((x >>> 18) & 0x07),
0x80 | ((x >>> 12) & 0x3F),
0x80 | ((x >>> 6) & 0x3F),
0x80 | (x & 0x3F));
}
return output;
}
/*
* Encode a string as utf-16
*/
public str2rstr_utf16le(input: string) {
var output = "";
for (var i = 0; i < input.length; i++)
output += String.fromCharCode(input.charCodeAt(i) & 0xFF,
(input.charCodeAt(i) >>> 8) & 0xFF);
return output;
}
public str2rstr_utf16be(input: string) {
var output = "";
for (var i = 0; i < input.length; i++)
output += String.fromCharCode((input.charCodeAt(i) >>> 8) & 0xFF,
input.charCodeAt(i) & 0xFF);
return output;
}
/*
* Convert a raw string to an array of little-endian words
* Characters >255 have their high-byte silently ignored.
*/
public rstr2binl(input: string) {
var output = Array(input.length >> 2);
for (var i = 0; i < output.length; i++)
output[i] = 0;
for (var i = 0; i < input.length * 8; i += 8)
output[i >> 5] |= (input.charCodeAt(i / 8) & 0xFF) << (i % 32);
return output;
}
/*
* Convert an array of little-endian words to a string
*/
public binl2rstr(input: number[]) {
var output = "";
for (var i = 0; i < input.length * 32; i += 8)
output += String.fromCharCode((input[i >> 5] >>> (i % 32)) & 0xFF);
return output;
}
/*
* Calculate the MD5 of an array of little-endian words, and a bit length.
*/
public binl_md5(x: number[], len: number) {
/* append padding */
x[len >> 5] |= 0x80 << ((len) % 32);
x[(((len + 64) >>> 9) << 4) + 14] = len;
var a = 1732584193;
var b = -271733879;
var c = -1732584194;
var d = 271733878;
for (var i = 0; i < x.length; i += 16) {
var olda = a;
var oldb = b;
var oldc = c;
var oldd = d;
a = this.md5_ff(a, b, c, d, x[i + 0], 7, -680876936);
d = this.md5_ff(d, a, b, c, x[i + 1], 12, -389564586);
c = this.md5_ff(c, d, a, b, x[i + 2], 17, 606105819);
b = this.md5_ff(b, c, d, a, x[i + 3], 22, -1044525330);
a = this.md5_ff(a, b, c, d, x[i + 4], 7, -176418897);
d = this.md5_ff(d, a, b, c, x[i + 5], 12, 1200080426);
c = this.md5_ff(c, d, a, b, x[i + 6], 17, -1473231341);
b = this.md5_ff(b, c, d, a, x[i + 7], 22, -45705983);
a = this.md5_ff(a, b, c, d, x[i + 8], 7, 1770035416);
d = this.md5_ff(d, a, b, c, x[i + 9], 12, -1958414417);
c = this.md5_ff(c, d, a, b, x[i + 10], 17, -42063);
b = this.md5_ff(b, c, d, a, x[i + 11], 22, -1990404162);
a = this.md5_ff(a, b, c, d, x[i + 12], 7, 1804603682);
d = this.md5_ff(d, a, b, c, x[i + 13], 12, -40341101);
c = this.md5_ff(c, d, a, b, x[i + 14], 17, -1502002290);
b = this.md5_ff(b, c, d, a, x[i + 15], 22, 1236535329);
a = this.md5_gg(a, b, c, d, x[i + 1], 5, -165796510);
d = this.md5_gg(d, a, b, c, x[i + 6], 9, -1069501632);
c = this.md5_gg(c, d, a, b, x[i + 11], 14, 643717713);
b = this.md5_gg(b, c, d, a, x[i + 0], 20, -373897302);
a = this.md5_gg(a, b, c, d, x[i + 5], 5, -701558691);
d = this.md5_gg(d, a, b, c, x[i + 10], 9, 38016083);
c = this.md5_gg(c, d, a, b, x[i + 15], 14, -660478335);
b = this.md5_gg(b, c, d, a, x[i + 4], 20, -405537848);
a = this.md5_gg(a, b, c, d, x[i + 9], 5, 568446438);
d = this.md5_gg(d, a, b, c, x[i + 14], 9, -1019803690);
c = this.md5_gg(c, d, a, b, x[i + 3], 14, -187363961);
b = this.md5_gg(b, c, d, a, x[i + 8], 20, 1163531501);
a = this.md5_gg(a, b, c, d, x[i + 13], 5, -1444681467);
d = this.md5_gg(d, a, b, c, x[i + 2], 9, -51403784);
c = this.md5_gg(c, d, a, b, x[i + 7], 14, 1735328473);
b = this.md5_gg(b, c, d, a, x[i + 12], 20, -1926607734);
a = this.md5_hh(a, b, c, d, x[i + 5], 4, -378558);
d = this.md5_hh(d, a, b, c, x[i + 8], 11, -2022574463);
c = this.md5_hh(c, d, a, b, x[i + 11], 16, 1839030562);
b = this.md5_hh(b, c, d, a, x[i + 14], 23, -35309556);
a = this.md5_hh(a, b, c, d, x[i + 1], 4, -1530992060);
d = this.md5_hh(d, a, b, c, x[i + 4], 11, 1272893353);
c = this.md5_hh(c, d, a, b, x[i + 7], 16, -155497632);
b = this.md5_hh(b, c, d, a, x[i + 10], 23, -1094730640);
a = this.md5_hh(a, b, c, d, x[i + 13], 4, 681279174);
d = this.md5_hh(d, a, b, c, x[i + 0], 11, -358537222);
c = this.md5_hh(c, d, a, b, x[i + 3], 16, -722521979);
b = this.md5_hh(b, c, d, a, x[i + 6], 23, 76029189);
a = this.md5_hh(a, b, c, d, x[i + 9], 4, -640364487);
d = this.md5_hh(d, a, b, c, x[i + 12], 11, -421815835);
c = this.md5_hh(c, d, a, b, x[i + 15], 16, 530742520);
b = this.md5_hh(b, c, d, a, x[i + 2], 23, -995338651);
a = this.md5_ii(a, b, c, d, x[i + 0], 6, -198630844);
d = this.md5_ii(d, a, b, c, x[i + 7], 10, 1126891415);
c = this.md5_ii(c, d, a, b, x[i + 14], 15, -1416354905);
b = this.md5_ii(b, c, d, a, x[i + 5], 21, -57434055);
a = this.md5_ii(a, b, c, d, x[i + 12], 6, 1700485571);
d = this.md5_ii(d, a, b, c, x[i + 3], 10, -1894986606);
c = this.md5_ii(c, d, a, b, x[i + 10], 15, -1051523);
b = this.md5_ii(b, c, d, a, x[i + 1], 21, -2054922799);
a = this.md5_ii(a, b, c, d, x[i + 8], 6, 1873313359);
d = this.md5_ii(d, a, b, c, x[i + 15], 10, -30611744);
c = this.md5_ii(c, d, a, b, x[i + 6], 15, -1560198380);
b = this.md5_ii(b, c, d, a, x[i + 13], 21, 1309151649);
a = this.md5_ii(a, b, c, d, x[i + 4], 6, -145523070);
d = this.md5_ii(d, a, b, c, x[i + 11], 10, -1120210379);
c = this.md5_ii(c, d, a, b, x[i + 2], 15, 718787259);
b = this.md5_ii(b, c, d, a, x[i + 9], 21, -343485551);
a = this.safe_add(a, olda);
b = this.safe_add(b, oldb);
c = this.safe_add(c, oldc);
d = this.safe_add(d, oldd);
}
return [a, b, c, d];
}
/*
* These privates implement the four basic operations the algorithm uses.
*/
public md5_cmn(q: any, a: any, b: any, x: any, s: any, t: any) {
return this.safe_add(this.bit_rol(this.safe_add(this.safe_add(a, q), this.safe_add(x, t)), s), b);
}
public md5_ff(a: any, b: any, c: any, d: any, x: any, s: any, t: any) {
return this.md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);
}
public md5_gg(a: any, b: any, c: any, d: any, x: any, s: any, t: any) {
return this.md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);
}
public md5_hh(a: any, b: any, c: any, d: any, x: any, s: any, t: any) {
return this.md5_cmn(b ^ c ^ d, a, b, x, s, t);
}
public md5_ii(a: any, b: any, c: any, d: any, x: any, s: any, t: any) {
return this.md5_cmn(c ^ (b | (~d)), a, b, x, s, t);
}
/*
* Add integers, wrapping at 2^32. This uses 16-bit operations internally
* to work around bugs in some JS interpreters.
*/
public safe_add(x: any, y: any) {
var lsw = (x & 0xFFFF) + (y & 0xFFFF);
var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
return (msw << 16) | (lsw & 0xFFFF);
}
/*
* Bitwise rotate a 32-bit number to the left.
*/
public bit_rol(num: any, cnt: any) {
return (num << cnt) | (num >>> (32 - cnt));
}
}