From 6a8cd28cab68725c2ce0a8a37a753e4d45c2fbad Mon Sep 17 00:00:00 2001
From: Carlo Revelli <carlo.revelli@berkeley.edu>
Date: Mon, 12 Aug 2019 11:32:44 +0100
Subject: [PATCH] removed old version for reference, see new one that uses
 cryptojs @ hmac-drbg.js

---
 .../elliptic/lib/hmac-drbg/hmac-old.js        | 114 ------------------
 1 file changed, 114 deletions(-)
 delete mode 100644 js/static_dependencies/elliptic/lib/hmac-drbg/hmac-old.js

diff --git a/js/static_dependencies/elliptic/lib/hmac-drbg/hmac-old.js b/js/static_dependencies/elliptic/lib/hmac-drbg/hmac-old.js
deleted file mode 100644
index c6ef89fbee20..000000000000
--- a/js/static_dependencies/elliptic/lib/hmac-drbg/hmac-old.js
+++ /dev/null
@@ -1,114 +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++;
-    let x = utils.encode(res, enc);
-    return x;
-};