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CipherSaber2 ops now accept a variety of key types

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This commit is contained in:
n1474335 2020-03-05 16:39:52 +00:00
parent 5e7b004925
commit 64b979e25e
4 changed files with 26 additions and 20 deletions
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8
src/core/lib/CipherSaber2.mjs
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@ -1,12 +1,10 @@
import Utils from "../Utils.mjs";
/**
* @author n1073645 [n1073645@gmail.com]
* @copyright Crown Copyright 2020
* @license Apache-2.0
*/
export function encode(tempIVP, args, input) {
const ivp = new Uint8Array(Utils.strToByteArray(args[0]).concat(tempIVP));
export function encode(tempIVP, key, rounds, input) {
const ivp = new Uint8Array(key.concat(tempIVP));
const state = new Array(256).fill(0);
let j = 0, i = 0;
const result = [];
@ -15,7 +13,7 @@ export function encode(tempIVP, args, input) {
for (let i = 0; i < 256; i++)
state[i] = i;
const ivpLength = ivp.length;
for (let r = 0; r < args[1]; r ++) {
for (let r = 0; r < rounds; r ++) {
for (let k = 0; k < 256; k++) {
j = (j + state[k] + ivp[k % ivpLength]) % 256;
[state[k], state[j]] = [state[j], state[k]];