42 lines
1.2 KiB
JavaScript
42 lines
1.2 KiB
JavaScript
'use strict';
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var openpgp = typeof window !== 'undefined' && window.openpgp ? window.openpgp : require('../../dist/openpgp');
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var expect = require('chai').expect;
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describe('PKCS5 padding', function() {
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function repeat(pattern, count) {
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var result = '';
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for (var k=0; k<count; ++k) {
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result += pattern;
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}
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return result;
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}
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var pkcs5 = openpgp.crypto.pkcs5;
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it('Add padding', function () {
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var s = '';
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while (s.length < 16) {
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var r = pkcs5.addPadding(s);
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// 0..7 -> 8, 8..15 -> 16
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var l = Math.ceil((s.length+1)/8)*8;
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var c = l - s.length;
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expect(r.length).to.equal(l);
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expect(c).is.at.least(1).is.at.most(8);
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expect(r.substr(-1)).to.equal(String.fromCharCode(c));
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s += ' ';
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}
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});
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it('Remove padding', function () {
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for (var k=1; k<=8; ++k) {
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var s = repeat(' ', 8-k);
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var r = s + repeat(String.fromCharCode(k), k);
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var t = pkcs5.removePadding(r);
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expect(t).to.equal(s);
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}
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});
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it('Invalid padding', function () {
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expect(function () {pkcs5.removePadding(' ');}).to.throw(Error, /Invalid padding/);
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expect(function () {pkcs5.removePadding('');}).to.throw(Error, /Invalid padding/);
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});
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});
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