| /* |
| Licensed to the Apache Software Foundation (ASF) under one |
| or more contributor license agreements. See the NOTICE file |
| distributed with this work for additional information |
| regarding copyright ownership. The ASF licenses this file |
| to you under the Apache License, Version 2.0 (the |
| "License"); you may not use this file except in compliance |
| with the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, |
| software distributed under the License is distributed on an |
| "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| KIND, either express or implied. See the License for the |
| specific language governing permissions and limitations |
| under the License. |
| */ |
| |
| /* Test GCM function - test driver and function exerciser for GCM API Functions */ |
| |
| var CTX = require("../index"); |
| |
| var chai = require('chai'); |
| |
| var expect = chai.expect; |
| |
| var ctx = new CTX(); |
| |
| |
| var bytestostring = function(b) { |
| var s = ""; |
| var len = b.length; |
| var ch; |
| |
| for (var i = 0; i < len; i++) { |
| ch = b[i]; |
| s += ((ch >>> 4) & 15).toString(16); |
| s += (ch & 15).toString(16); |
| } |
| return s; |
| } |
| |
| var stringtobytes = function(s) { |
| var b = []; |
| for (var i = 0; i < s.length; i++) |
| b.push(s.charCodeAt(i)); |
| return b; |
| } |
| |
| var hextobytes = function(value_hex) { |
| // "use strict"; |
| var len, byte_value, i; |
| |
| len = value_hex.length; |
| byte_value = []; |
| |
| for (i = 0; i < len; i += 2) { |
| byte_value[(i / 2)] = parseInt(value_hex.substr(i, 2), 16); |
| } |
| return byte_value; |
| }; |
| |
| describe('TEST GCM', function() { |
| |
| var IV, KEY, PT, CT, AAD; |
| var CTout = []; |
| var PTout = []; |
| var TAGout = []; |
| |
| it('test GCM encryption', function(done) { |
| this.timeout(0); |
| |
| var vectors = require('../testVectors/gcm/GCM_ENC128.json'); |
| |
| for (var vector in vectors) { |
| KEY = hextobytes(vectors[vector].KEY); |
| PT = hextobytes(vectors[vector].PT); |
| IV = hextobytes(vectors[vector].IV); |
| AAD = hextobytes(vectors[vector].AAD); |
| |
| var gcm = new ctx.GCM(); |
| gcm.init(KEY.length, KEY, IV.length, IV); |
| gcm.add_header(AAD, AAD.length); |
| CTout = gcm.add_plain(PT, PT.length); |
| TAGout = gcm.finish(true); |
| |
| expect(bytestostring(CTout)).to.be.equal(vectors[vector].CT); |
| expect(bytestostring(TAGout).substring(0,(vectors[vector].TAG.length))).to.be.equal(vectors[vector].TAG); |
| } |
| done(); |
| }); |
| |
| it('test GCM decryption', function(done) { |
| this.timeout(0); |
| |
| var vectors = require('../testVectors/gcm/GCM_DEC128.json'); |
| |
| for (var vector in vectors) { |
| KEY = hextobytes(vectors[vector].KEY); |
| CT = hextobytes(vectors[vector].CT); |
| IV = hextobytes(vectors[vector].IV); |
| AAD = hextobytes(vectors[vector].AAD); |
| |
| var gcm = new ctx.GCM(); |
| gcm.init(KEY.length, KEY, IV.length, IV); |
| gcm.add_header(AAD, AAD.length); |
| PTout = gcm.add_cipher(CT, CT.length); |
| TAGout = gcm.finish(true); |
| |
| expect(bytestostring(PTout)).to.be.equal(vectors[vector].PT); |
| expect(bytestostring(TAGout).substring(0,(vectors[vector].TAG.length))).to.be.equal(vectors[vector].TAG); |
| } |
| done(); |
| }); |
| |
| }); |