1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
| 'use strict';
|
| var utils = require('../utils');
| var SHA256 = require('./256');
|
| function SHA224() {
| if (!(this instanceof SHA224))
| return new SHA224();
|
| SHA256.call(this);
| this.h = [
| 0xc1059ed8, 0x367cd507, 0x3070dd17, 0xf70e5939,
| 0xffc00b31, 0x68581511, 0x64f98fa7, 0xbefa4fa4 ];
| }
| utils.inherits(SHA224, SHA256);
| module.exports = SHA224;
|
| SHA224.blockSize = 512;
| SHA224.outSize = 224;
| SHA224.hmacStrength = 192;
| SHA224.padLength = 64;
|
| SHA224.prototype._digest = function digest(enc) {
| // Just truncate output
| if (enc === 'hex')
| return utils.toHex32(this.h.slice(0, 7), 'big');
| else
| return utils.split32(this.h.slice(0, 7), 'big');
| };
|
|
