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authorGravatar Piotr Russ <mail@pruss.it> 2020-11-18 23:26:45 +0100
committerGravatar Piotr Russ <mail@pruss.it> 2020-11-18 23:26:45 +0100
commit81ddf9b700bc48a1f8e472209f080f9c1d9a9b09 (patch)
tree8b959d50c5a614cbf9fcb346ed556140374d4b6d /node_modules/hmac-drbg/lib/hmac-drbg.js
parent1870f3fdf43707a15fda0f609a021f516f45eb63 (diff)
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rm node_modules
Diffstat (limited to 'node_modules/hmac-drbg/lib/hmac-drbg.js')
-rw-r--r--node_modules/hmac-drbg/lib/hmac-drbg.js113
1 files changed, 0 insertions, 113 deletions
diff --git a/node_modules/hmac-drbg/lib/hmac-drbg.js b/node_modules/hmac-drbg/lib/hmac-drbg.js
deleted file mode 100644
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--- a/node_modules/hmac-drbg/lib/hmac-drbg.js
+++ /dev/null
@@ -1,113 +0,0 @@
-'use strict';
-
-var hash = require('hash.js');
-var utils = require('minimalistic-crypto-utils');
-var assert = require('minimalistic-assert');
-
-function HmacDRBG(options) {
- if (!(this instanceof HmacDRBG))
- return new HmacDRBG(options);
- this.hash = options.hash;
- this.predResist = !!options.predResist;
-
- this.outLen = this.hash.outSize;
- this.minEntropy = options.minEntropy || this.hash.hmacStrength;
-
- this._reseed = null;
- this.reseedInterval = null;
- this.K = null;
- this.V = null;
-
- var entropy = utils.toArray(options.entropy, options.entropyEnc || 'hex');
- var nonce = utils.toArray(options.nonce, options.nonceEnc || 'hex');
- var pers = utils.toArray(options.pers, options.persEnc || 'hex');
- assert(entropy.length >= (this.minEntropy / 8),
- 'Not enough entropy. Minimum is: ' + this.minEntropy + ' bits');
- this._init(entropy, nonce, pers);
-}
-module.exports = HmacDRBG;
-
-HmacDRBG.prototype._init = function init(entropy, nonce, pers) {
- var seed = entropy.concat(nonce).concat(pers);
-
- this.K = new Array(this.outLen / 8);
- this.V = new Array(this.outLen / 8);
- for (var i = 0; i < this.V.length; i++) {
- this.K[i] = 0x00;
- this.V[i] = 0x01;
- }
-
- this._update(seed);
- this._reseed = 1;
- this.reseedInterval = 0x1000000000000; // 2^48
-};
-
-HmacDRBG.prototype._hmac = function hmac() {
- return new hash.hmac(this.hash, this.K);
-};
-
-HmacDRBG.prototype._update = function update(seed) {
- var kmac = this._hmac()
- .update(this.V)
- .update([ 0x00 ]);
- if (seed)
- kmac = kmac.update(seed);
- this.K = kmac.digest();
- this.V = this._hmac().update(this.V).digest();
- if (!seed)
- return;
-
- this.K = this._hmac()
- .update(this.V)
- .update([ 0x01 ])
- .update(seed)
- .digest();
- this.V = this._hmac().update(this.V).digest();
-};
-
-HmacDRBG.prototype.reseed = function reseed(entropy, entropyEnc, add, addEnc) {
- // Optional entropy enc
- if (typeof entropyEnc !== 'string') {
- addEnc = add;
- add = entropyEnc;
- entropyEnc = null;
- }
-
- entropy = utils.toArray(entropy, entropyEnc);
- add = utils.toArray(add, addEnc);
-
- assert(entropy.length >= (this.minEntropy / 8),
- 'Not enough entropy. Minimum is: ' + this.minEntropy + ' bits');
-
- this._update(entropy.concat(add || []));
- this._reseed = 1;
-};
-
-HmacDRBG.prototype.generate = function generate(len, enc, add, addEnc) {
- if (this._reseed > this.reseedInterval)
- throw new Error('Reseed is required');
-
- // Optional encoding
- if (typeof enc !== 'string') {
- addEnc = add;
- add = enc;
- enc = null;
- }
-
- // Optional additional data
- if (add) {
- add = utils.toArray(add, addEnc || 'hex');
- this._update(add);
- }
-
- var temp = [];
- while (temp.length < len) {
- this.V = this._hmac().update(this.V).digest();
- temp = temp.concat(this.V);
- }
-
- var res = temp.slice(0, len);
- this._update(add);
- this._reseed++;
- return utils.encode(res, enc);
-};