From 499bc152a143fb173fad7e8f7782cac82737c556 Mon Sep 17 00:00:00 2001 From: "D. Scott Boggs" Date: Mon, 25 Sep 2023 13:13:20 -0400 Subject: [PATCH] initial commit --- .gitignore | 1 + LICENSE | 373 ++++++++++++++++++++++++++++ README.md | 78 ++++++ index.js | 224 +++++++++++++++++ package.json | 18 ++ shell.nix | 10 + test/scrypt.test.js | 181 ++++++++++++++ yarn.lock | 585 ++++++++++++++++++++++++++++++++++++++++++++ 8 files changed, 1470 insertions(+) create mode 100644 .gitignore create mode 100644 LICENSE create mode 100644 README.md create mode 100644 index.js create mode 100644 package.json create mode 100644 shell.nix create mode 100644 test/scrypt.test.js create mode 100644 yarn.lock diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..c2658d7 --- /dev/null +++ b/.gitignore @@ -0,0 +1 @@ +node_modules/ diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..d0a1fa1 --- /dev/null +++ b/LICENSE @@ -0,0 +1,373 @@ +Mozilla Public License Version 2.0 +================================== + +1. Definitions +-------------- + +1.1. "Contributor" + means each individual or legal entity that creates, contributes to + the creation of, or owns Covered Software. + +1.2. "Contributor Version" + means the combination of the Contributions of others (if any) used + by a Contributor and that particular Contributor's Contribution. + +1.3. "Contribution" + means Covered Software of a particular Contributor. + +1.4. "Covered Software" + means Source Code Form to which the initial Contributor has attached + the notice in Exhibit A, the Executable Form of such Source Code + Form, and Modifications of such Source Code Form, in each case + including portions thereof. + +1.5. "Incompatible With Secondary Licenses" + means + + (a) that the initial Contributor has attached the notice described + in Exhibit B to the Covered Software; or + + (b) that the Covered Software was made available under the terms of + version 1.1 or earlier of the License, but not also under the + terms of a Secondary License. + +1.6. "Executable Form" + means any form of the work other than Source Code Form. + +1.7. "Larger Work" + means a work that combines Covered Software with other material, in + a separate file or files, that is not Covered Software. + +1.8. "License" + means this document. + +1.9. "Licensable" + means having the right to grant, to the maximum extent possible, + whether at the time of the initial grant or subsequently, any and + all of the rights conveyed by this License. + +1.10. "Modifications" + means any of the following: + + (a) any file in Source Code Form that results from an addition to, + deletion from, or modification of the contents of Covered + Software; or + + (b) any new file in Source Code Form that contains any Covered + Software. + +1.11. "Patent Claims" of a Contributor + means any patent claim(s), including without limitation, method, + process, and apparatus claims, in any patent Licensable by such + Contributor that would be infringed, but for the grant of the + License, by the making, using, selling, offering for sale, having + made, import, or transfer of either its Contributions or its + Contributor Version. + +1.12. "Secondary License" + means either the GNU General Public License, Version 2.0, the GNU + Lesser General Public License, Version 2.1, the GNU Affero General + Public License, Version 3.0, or any later versions of those + licenses. + +1.13. "Source Code Form" + means the form of the work preferred for making modifications. + +1.14. "You" (or "Your") + means an individual or a legal entity exercising rights under this + License. For legal entities, "You" includes any entity that + controls, is controlled by, or is under common control with You. For + purposes of this definition, "control" means (a) the power, direct + or indirect, to cause the direction or management of such entity, + whether by contract or otherwise, or (b) ownership of more than + fifty percent (50%) of the outstanding shares or beneficial + ownership of such entity. + +2. License Grants and Conditions +-------------------------------- + +2.1. Grants + +Each Contributor hereby grants You a world-wide, royalty-free, +non-exclusive license: + +(a) under intellectual property rights (other than patent or trademark) + Licensable by such Contributor to use, reproduce, make available, + modify, display, perform, distribute, and otherwise exploit its + Contributions, either on an unmodified basis, with Modifications, or + as part of a Larger Work; and + +(b) under Patent Claims of such Contributor to make, use, sell, offer + for sale, have made, import, and otherwise transfer either its + Contributions or its Contributor Version. + +2.2. Effective Date + +The licenses granted in Section 2.1 with respect to any Contribution +become effective for each Contribution on the date the Contributor first +distributes such Contribution. + +2.3. Limitations on Grant Scope + +The licenses granted in this Section 2 are the only rights granted under +this License. No additional rights or licenses will be implied from the +distribution or licensing of Covered Software under this License. +Notwithstanding Section 2.1(b) above, no patent license is granted by a +Contributor: + +(a) for any code that a Contributor has removed from Covered Software; + or + +(b) for infringements caused by: (i) Your and any other third party's + modifications of Covered Software, or (ii) the combination of its + Contributions with other software (except as part of its Contributor + Version); or + +(c) under Patent Claims infringed by Covered Software in the absence of + its Contributions. + +This License does not grant any rights in the trademarks, service marks, +or logos of any Contributor (except as may be necessary to comply with +the notice requirements in Section 3.4). + +2.4. Subsequent Licenses + +No Contributor makes additional grants as a result of Your choice to +distribute the Covered Software under a subsequent version of this +License (see Section 10.2) or under the terms of a Secondary License (if +permitted under the terms of Section 3.3). + +2.5. Representation + +Each Contributor represents that the Contributor believes its +Contributions are its original creation(s) or it has sufficient rights +to grant the rights to its Contributions conveyed by this License. + +2.6. Fair Use + +This License is not intended to limit any rights You have under +applicable copyright doctrines of fair use, fair dealing, or other +equivalents. + +2.7. Conditions + +Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted +in Section 2.1. + +3. Responsibilities +------------------- + +3.1. Distribution of Source Form + +All distribution of Covered Software in Source Code Form, including any +Modifications that You create or to which You contribute, must be under +the terms of this License. You must inform recipients that the Source +Code Form of the Covered Software is governed by the terms of this +License, and how they can obtain a copy of this License. You may not +attempt to alter or restrict the recipients' rights in the Source Code +Form. + +3.2. Distribution of Executable Form + +If You distribute Covered Software in Executable Form then: + +(a) such Covered Software must also be made available in Source Code + Form, as described in Section 3.1, and You must inform recipients of + the Executable Form how they can obtain a copy of such Source Code + Form by reasonable means in a timely manner, at a charge no more + than the cost of distribution to the recipient; and + +(b) You may distribute such Executable Form under the terms of this + License, or sublicense it under different terms, provided that the + license for the Executable Form does not attempt to limit or alter + the recipients' rights in the Source Code Form under this License. + +3.3. Distribution of a Larger Work + +You may create and distribute a Larger Work under terms of Your choice, +provided that You also comply with the requirements of this License for +the Covered Software. If the Larger Work is a combination of Covered +Software with a work governed by one or more Secondary Licenses, and the +Covered Software is not Incompatible With Secondary Licenses, this +License permits You to additionally distribute such Covered Software +under the terms of such Secondary License(s), so that the recipient of +the Larger Work may, at their option, further distribute the Covered +Software under the terms of either this License or such Secondary +License(s). + +3.4. Notices + +You may not remove or alter the substance of any license notices +(including copyright notices, patent notices, disclaimers of warranty, +or limitations of liability) contained within the Source Code Form of +the Covered Software, except that You may alter any license notices to +the extent required to remedy known factual inaccuracies. + +3.5. Application of Additional Terms + +You may choose to offer, and to charge a fee for, warranty, support, +indemnity or liability obligations to one or more recipients of Covered +Software. However, You may do so only on Your own behalf, and not on +behalf of any Contributor. You must make it absolutely clear that any +such warranty, support, indemnity, or liability obligation is offered by +You alone, and You hereby agree to indemnify every Contributor for any +liability incurred by such Contributor as a result of warranty, support, +indemnity or liability terms You offer. You may include additional +disclaimers of warranty and limitations of liability specific to any +jurisdiction. + +4. Inability to Comply Due to Statute or Regulation +--------------------------------------------------- + +If it is impossible for You to comply with any of the terms of this +License with respect to some or all of the Covered Software due to +statute, judicial order, or regulation then You must: (a) comply with +the terms of this License to the maximum extent possible; and (b) +describe the limitations and the code they affect. Such description must +be placed in a text file included with all distributions of the Covered +Software under this License. Except to the extent prohibited by statute +or regulation, such description must be sufficiently detailed for a +recipient of ordinary skill to be able to understand it. + +5. Termination +-------------- + +5.1. The rights granted under this License will terminate automatically +if You fail to comply with any of its terms. However, if You become +compliant, then the rights granted under this License from a particular +Contributor are reinstated (a) provisionally, unless and until such +Contributor explicitly and finally terminates Your grants, and (b) on an +ongoing basis, if such Contributor fails to notify You of the +non-compliance by some reasonable means prior to 60 days after You have +come back into compliance. Moreover, Your grants from a particular +Contributor are reinstated on an ongoing basis if such Contributor +notifies You of the non-compliance by some reasonable means, this is the +first time You have received notice of non-compliance with this License +from such Contributor, and You become compliant prior to 30 days after +Your receipt of the notice. + +5.2. If You initiate litigation against any entity by asserting a patent +infringement claim (excluding declaratory judgment actions, +counter-claims, and cross-claims) alleging that a Contributor Version +directly or indirectly infringes any patent, then the rights granted to +You by any and all Contributors for the Covered Software under Section +2.1 of this License shall terminate. + +5.3. In the event of termination under Sections 5.1 or 5.2 above, all +end user license agreements (excluding distributors and resellers) which +have been validly granted by You or Your distributors under this License +prior to termination shall survive termination. + +************************************************************************ +* * +* 6. Disclaimer of Warranty * +* ------------------------- * +* * +* Covered Software is provided under this License on an "as is" * +* basis, without warranty of any kind, either expressed, implied, or * +* statutory, including, without limitation, warranties that the * +* Covered Software is free of defects, merchantable, fit for a * +* particular purpose or non-infringing. The entire risk as to the * +* quality and performance of the Covered Software is with You. * +* Should any Covered Software prove defective in any respect, You * +* (not any Contributor) assume the cost of any necessary servicing, * +* repair, or correction. This disclaimer of warranty constitutes an * +* essential part of this License. No use of any Covered Software is * +* authorized under this License except under this disclaimer. * +* * +************************************************************************ + +************************************************************************ +* * +* 7. Limitation of Liability * +* -------------------------- * +* * +* Under no circumstances and under no legal theory, whether tort * +* (including negligence), contract, or otherwise, shall any * +* Contributor, or anyone who distributes Covered Software as * +* permitted above, be liable to You for any direct, indirect, * +* special, incidental, or consequential damages of any character * +* including, without limitation, damages for lost profits, loss of * +* goodwill, work stoppage, computer failure or malfunction, or any * +* and all other commercial damages or losses, even if such party * +* shall have been informed of the possibility of such damages. This * +* limitation of liability shall not apply to liability for death or * +* personal injury resulting from such party's negligence to the * +* extent applicable law prohibits such limitation. Some * +* jurisdictions do not allow the exclusion or limitation of * +* incidental or consequential damages, so this exclusion and * +* limitation may not apply to You. * +* * +************************************************************************ + +8. Litigation +------------- + +Any litigation relating to this License may be brought only in the +courts of a jurisdiction where the defendant maintains its principal +place of business and such litigation shall be governed by laws of that +jurisdiction, without reference to its conflict-of-law provisions. +Nothing in this Section shall prevent a party's ability to bring +cross-claims or counter-claims. + +9. Miscellaneous +---------------- + +This License represents the complete agreement concerning the subject +matter hereof. If any provision of this License is held to be +unenforceable, such provision shall be reformed only to the extent +necessary to make it enforceable. Any law or regulation which provides +that the language of a contract shall be construed against the drafter +shall not be used to construe this License against a Contributor. + +10. Versions of the License +--------------------------- + +10.1. New Versions + +Mozilla Foundation is the license steward. Except as provided in Section +10.3, no one other than the license steward has the right to modify or +publish new versions of this License. Each version will be given a +distinguishing version number. + +10.2. Effect of New Versions + +You may distribute the Covered Software under the terms of the version +of the License under which You originally received the Covered Software, +or under the terms of any subsequent version published by the license +steward. + +10.3. Modified Versions + +If you create software not governed by this License, and you want to +create a new license for such software, you may create and use a +modified version of this License if you rename the license and remove +any references to the name of the license steward (except to note that +such modified license differs from this License). + +10.4. Distributing Source Code Form that is Incompatible With Secondary +Licenses + +If You choose to distribute Source Code Form that is Incompatible With +Secondary Licenses under the terms of this version of the License, the +notice described in Exhibit B of this License must be attached. + +Exhibit A - Source Code Form License Notice +------------------------------------------- + + This Source Code Form is subject to the terms of the Mozilla Public + License, v. 2.0. If a copy of the MPL was not distributed with this + file, You can obtain one at https://mozilla.org/MPL/2.0/. + +If it is not possible or desirable to put the notice in a particular +file, then You may include the notice in a location (such as a LICENSE +file in a relevant directory) where a recipient would be likely to look +for such a notice. + +You may add additional accurate notices of copyright ownership. + +Exhibit B - "Incompatible With Secondary Licenses" Notice +--------------------------------------------------------- + + This Source Code Form is "Incompatible With Secondary Licenses", as + defined by the Mozilla Public License, v. 2.0. diff --git a/README.md b/README.md new file mode 100644 index 0000000..91c4537 --- /dev/null +++ b/README.md @@ -0,0 +1,78 @@ +# Scrypt Wrapper + +NodeJS's standard library's `crypto` module contains an `scrypt` function, +which uses the Scrypt password-based key derivation function to create a hash +which can be stored to later verify a password's validity. This library is a +thin wrapper around that function which handles salting, serializing and +deserializing hash metadata, and verification. It contains both asynchronous +and synchronous versions of its functions, and is thoroughly tested. + +## Usage + +```javascript +const { hash, verify } = require('@techworkers/scrypt-wrapper') +const userEnteredPassword = 'some password' +const hashedPassword = await hash(userEnteredPassword) +if (await verify(hashedPassword, userEnteredPassword)) { + // allowed! +} +``` + +Or, in a synchronous environment... + +```javascript +const { hashSync, verifySync } = require('@techworkers/scrypt-wrapper') +const userEnteredPassword = 'some password' +const hashedPassword = hashSync(userEnteredPassword) +if (verifySync(hashedPassword, userEnteredPassword)) { + // allowed! +} +``` + +Async and sync versions can be used together. For example, Sequelize doesn't +offer async setters: + +```javascript +const sequelize = require('sequelize') +const { Model } = sequelize +const { hashSync, verify } = require('@techworkers/scrypt-wrapper') +module.exports = (sequelize, DataTypes) => { + class User extends Model { + static async authenticated(name, password) { + const user = await User.findOne({ where: { name } }) + if (!user) return null + if (await verify(user.password, password)) return user + else return null + } + } + User.init( + { + name: DataTypes.STRING, + password: { + type: DataTypes.STRING, + set(password) { + if (!password) throw `invalid password <${password}>` + this.setDataValue('password', hashSync(password)) + // We need to generate the hash ^^^ value synchronously here + }, + }, + }, + { + sequelize, + tableName: 'Users', + modelName: 'User', + underscored: true, + }, + ) + return User +} + +// Creating a user +const user = await User.create({name: 'user', password: 'monkey'}) +// Validating them +const reFetchedUser = await User.authenticated('user', 'monkey') +``` + +## Tests + +Run tests with `yarn test`. \ No newline at end of file diff --git a/index.js b/index.js new file mode 100644 index 0000000..8a2d2bf --- /dev/null +++ b/index.js @@ -0,0 +1,224 @@ +/** + * Helpers to make using node's built-in scrypt implementation more + * straightforward to use and testable + * + * See https://nodejs.org/api/crypto.html#cryptoscryptpassword-salt-keylen-options-callback + * https://stackoverflow.com/questions/62908969/password-hashing-in-nodejs-using-built-in-crypto + * + */ +const { scrypt, scryptSync, timingSafeEqual, randomBytes } = require('node:crypto') + +/// Node recommends at least 16 at time of writing. 24 is more than that and +// also will result in a base64 string which doesn't contain padding, which is +// always nice. +const DEFAULT_SALT_LENGTH = 24 + +// Node defaults to 16384 (1 << 14) +const DEFAULT_COST = 14 + +// Not really sure why this is the value everyone is using. +const DEFAULT_KEY_LENGTH = 64 + +/** + * @class + * @extends {Error} + * @classdesc An error thrown when there was a problem encountered while parsing a serialized hash + * @property {?Exception} cause An exception which was thrown while parsing this string. + * @property {any} malformedString + */ +class ParseError extends Error { + /** + * @param {any} malformedString - The string which could not be parsed + * @param {?Exception} cause - An error which was raised while trying to parse the string + */ + constructor(malformedString, cause) { + super(`error parsing ${malformedString}, expected hash encoded by @techworkers/scrypt-wrapper`) + this.cause = cause + this.malformedString = malformedString + } +} + +/** + * @class + * @extends {Error} + * @classdesc An Error thrown when the given options value passed to hash() or hashSync() is invalid + * @property {HashOptions} options The options passed to hash() or hashSync() + */ +class InvalidOptions extends Error { + /** + * + * @param {HashOptions} options The options which were received that are invalid + */ + constructor(options) { + super(`invalid options were received:\n\tcost: ${options.cost}\n\tkeyLength: ${options.keyLength}\n\tsaltLength: ${options.saltLength}`) + this.options = options + } + + /** + * Check that the given options are actually what they're expected to be + * @param {HashOptions} options + * @param {?function} reject A function called with the error rather than it being thrown + */ + static validateOptions(options, reject) { + const {cost, keyLength, saltLength} = options + // Cost validation + if ( + !(typeof cost === 'number' || cost instanceof Number) + || cost < 13 + || !Number.isInteger(cost) + ) { + const err = new InvalidOptions(options) + if(reject) reject(err) + else throw err + } + // keyLength validation + if ( + !(typeof keyLength === 'number' || keyLength instanceof Number) + || !Number.isInteger(keyLength) + ) { + const err = new InvalidOptions(options) + if(reject) reject(err) + else throw err + } + // saltLength validation + if ( + !(typeof saltLength === 'number' || saltLength instanceof Number) + || saltLength < 16 /* (recommended minimum) */ + || !Number.isInteger(saltLength) + ) { + const err = new InvalidOptions(options) + if(reject) reject(err) + else throw err + } + } +} + +/** + * @typedef HashOptions the optional values which may be passed to hash() and hashSync() + * @property {number} cost the number of bits to shift 1 to to get the cost value. Defaults to 14 + * @property {number} keyLength how long the generated hash should be. Defaults to 64. + * @property {number} saltLength the number of random bytes to use as a salt. Defaults to 24. + */ + +/** + * Generate an scrypt hash for the given password. The resulting string is as + * follows: + * - The base-16 cost value + * - a dot ('.') + * - the URL-safe base64-encoded salt + * - a dot ('.') + * - the URL-safe base64-encoded derived hash + * + * @param {string} password the plain-text password + * @param {?HashOptions} options optional settings + * @throws {InvalidOptions} if the options aren't within the expected constraints + * @returns {Promise} + */ +function hash(password, options) { + const cost = options?.cost ?? DEFAULT_COST + const keyLength = options?.keyLength ?? DEFAULT_KEY_LENGTH + const saltLength = options?.saltLength ?? DEFAULT_SALT_LENGTH + const salt = randomBytes(saltLength) + const $cost = 1 << cost + return new Promise((resolve, reject) => { + InvalidOptions.validateOptions({cost, keyLength, saltLength}, reject) + let $hash = cost.toString(16) + '.' + $hash += salt.toString('base64url') + '.' + scrypt(password.normalize(), salt, keyLength, { cost: $cost }, (err, key) => { + if (err) reject(err) + else resolve($hash + key.toString('base64url')) + }) + }) +} + +/** + * Like the above hash() function but synchronous. + * + * @param {string} password the plain-text password + * @param {?HashOptions} options optional settings + * @throws {InvalidOptions} if the options aren't within the expected constraints + * @returns {Promise} + */ +function hashSync(password, options) { + const cost = options?.cost ?? DEFAULT_COST + const keyLength = options?.keyLength ?? DEFAULT_KEY_LENGTH + const saltLength = options?.saltLength ?? DEFAULT_SALT_LENGTH + InvalidOptions.validateOptions({cost, keyLength, saltLength}) + const salt = randomBytes(saltLength) + const $cost = 1 << cost + let $hash = cost.toString(16) + '.' + $hash += salt.toString('base64url') + '.' + return $hash + scryptSync(password.normalize(), salt, keyLength, { cost: $cost }).toString('base64url') +} + +/** + * Verify that the given plaintext password derives the given hash. The hash is + * expected to be in the format as encoded by the above hash() function, which + * also encodes the cost and salt used to create it. + * + * @param {string} derivedHash The hash as derived and encoded by the above + * hash() function + * @param {string} password The plaintext password to compare + * @async + * @returns {Promise} whether the password matches + */ +function verify(derivedHash, password) { + return new Promise((resolve, reject) => { + var $cost, $salt, $key + try { + [$cost, $salt, $key] = derivedHash.split('.') + } catch (e) { + return reject(new ParseError(derivedHash, e)) + } + if (!$cost || !$salt || !$key) { + return reject(new ParseError(derivedHash)) + } + var cost, salt, key + try { + cost = 1 << Number.parseInt($cost, 16) + salt = Buffer.from($salt, 'base64url') + key = Buffer.from($key, 'base64url') + } catch (e) { + return reject(new ParseError(derivedHash, e)) + } + scrypt(password.normalize(), salt, key.length, { cost }, (err, newKey) => { + if (err) reject(err) + else resolve(timingSafeEqual(key, newKey)) + }) + }) +} + +/** + * Like `verify()`, but synchronous. + * + * @param {string} derivedHash The hash as derived and encoded by the above + * hash() function + * @param {string} password The plaintext password to compare + * @throws {ParseError} when there's a problem parsing the given hash + * @returns {Promise} whether the password matches + */ +function verifySync(derivedHash, password) { + var $cost, $salt, $key + try { + [$cost, $salt, $key] = derivedHash.split('.') + } catch (e) { + throw new ParseError(derivedHash, e) + } + if (!$cost || !$salt || !$key) { + throw new ParseError(derivedHash) + } + var cost, salt, key + try { + cost = 1 << Number.parseInt($cost, 16) + salt = Buffer.from($salt, 'base64url') + key = Buffer.from($key, 'base64url') + } catch (e) { + throw new ParseError(derivedHash, e) + } + const newKey = scryptSync(password.normalize(), salt, key.length, { cost }) + return timingSafeEqual(key, newKey) +} + +module.exports = { + hash, hashSync, verify, verifySync, ParseError, InvalidOptions +} \ No newline at end of file diff --git a/package.json b/package.json new file mode 100644 index 0000000..2b778b7 --- /dev/null +++ b/package.json @@ -0,0 +1,18 @@ +{ + "name": "@techworkers/scrypt-wrapper", + "version": "1.0.0", + "description": "A thin wrapper around Node's stdlib crypto.scrypt function", + "main": "index.js", + "repository": "https://git.tams.tech/TWS/node-scrypt-wrapper.git", + "author": "Tech Workers' Syndicate", + "license": "MPL-2.0", + "private": false, + "scripts": { + "test": "mocha" + }, + "devDependencies": { + "chai": "^4.3.8", + "chai-as-promised": "^7.1.1", + "mocha": "^10.2.0" + } +} diff --git a/shell.nix b/shell.nix new file mode 100644 index 0000000..203a0a9 --- /dev/null +++ b/shell.nix @@ -0,0 +1,10 @@ +# DEVELOPMENT shell environment +{ pkgs ? import {} }: + +pkgs.mkShell { + name = "NodeJS"; + nativeBuildInputs = with pkgs.buildPackages; [ + nodejs yarn + ]; +} + diff --git a/test/scrypt.test.js b/test/scrypt.test.js new file mode 100644 index 0000000..954ea39 --- /dev/null +++ b/test/scrypt.test.js @@ -0,0 +1,181 @@ +const chai = require('chai') +chai.use(require('chai-as-promised')) +chai.should() +const { expect } = chai +const scrypt = require('..') + +describe('hashing and verification', function () { + it('works', async function () { + const pass = 'b4dpa$s' + const derived = await scrypt.hash(pass) + const [cost, salt, key] = derived.split('.') + cost.should.eq('e') + salt.length.should.eq(32) + key.length.should.eq(86) + Buffer.from(key, 'base64url').length.should.eq(64) + scrypt.verify(derived, pass).should.eventually.be.true + }) +}) +describe('hashSync() and sync verification', function () { + it('works', function () { + const pass = 'b4dpa$s' + const derived = scrypt.hashSync(pass) + const [cost, salt, key] = derived.split('.') + cost.should.eq('e') + salt.length.should.eq(32) + key.length.should.eq(86) + Buffer.from(key, 'base64url').length.should.eq(64) + scrypt.verifySync(derived, pass).should.be.true + }) +}) + +describe('hash() error cases', function () { + it('throws an error when it receives an invalid cost value', async function () { + scrypt.hash('bad password', { cost: 2.3 }).should.be.rejectedWith(scrypt.InvalidOptions) + scrypt.hash('bad password', { cost: 2 /* too small */ }).should.be.rejectedWith(scrypt.InvalidOptions) + }) + it('throws an error when it receives an invalid keyLength value', async function () { + scrypt.hash('bad password', { keyLength: 2.3 }).should.be.rejectedWith(scrypt.InvalidOptions) + }) + it('throws an error when it receives an invalid saltLength value', async function () { + scrypt.hash('bad password', { saltLength: 2.3 }).should.be.rejectedWith(scrypt.InvalidOptions) + scrypt.hash('bad password', { saltLength: 15 /* too small */ }).should.be.rejectedWith(scrypt.InvalidOptions) + }) + it('throws an error when the password is not the right thing', function () { + scrypt.hash(undefined).should.eventually.be.rejected + scrypt.hash(null).should.eventually.be.rejected + scrypt.hash(123.4).should.eventually.be.rejected + scrypt.hash(NaN).should.eventually.be.rejected + scrypt.hash(['some', 'arbitrary', 'values']).should.eventually.be.rejected + scrypt.hash({ some: 'arbitrary values' }).should.eventually.be.rejected + scrypt.hash(Symbol('something else')).should.eventually.be.rejected + scrypt.hash(() => "no, you can't do this either").should.eventually.be.rejected + }) +}) + +describe('hashSync() error cases', function () { + it('throws an error when it receives an invalid cost value', async function () { + scrypt.hashSync.bind(undefined, 'bad password', { cost: 2.3 }).should.throw(scrypt.InvalidOptions) + scrypt.hashSync.bind(undefined, 'bad password', { cost: 2 /* too small */ }).should.throw(scrypt.InvalidOptions) + }) + it('throws an error when it receives an invalid keyLength value', async function () { + scrypt.hashSync.bind(undefined, 'bad password', { keyLength: 2.3 }).should.throw(scrypt.InvalidOptions) + }) + it('throws an error when it receives an invalid saltLength value', async function () { + scrypt.hashSync.bind(undefined, 'bad password', { saltLength: 2.3 }).should.throw(scrypt.InvalidOptions) + scrypt.hashSync.bind(undefined, 'bad password', { saltLength: 15 }).should.throw(scrypt.InvalidOptions) + }) + it('throws an error when the password is not the right thing', function () { + scrypt.hashSync.bind(undefined, undefined).should.throw() + scrypt.hashSync.bind(undefined, null).should.throw() + scrypt.hashSync.bind(undefined, 123.4).should.throw() + scrypt.hashSync.bind(undefined, NaN).should.throw() + scrypt.hashSync.bind(undefined, ['some', 'arbitrary', 'values']).should.throw() + scrypt.hashSync.bind(undefined, { some: 'arbitrary values' }).should.throw() + scrypt.hashSync.bind(undefined, Symbol('something else')).should.throw() + scrypt.hashSync.bind(undefined, () => "no, you can't do this either").should.throw() + }) +}) + +describe('verify() error cases', function () { + it('throws an error when the password is not the right thing', function () { + const validHash = 'e.WCu8zB9FHLhXaAf5Svn7NE4ySqB5X45X.ZLpxVwLz1816kmshqXHn12X_4_lZD_0Yl-27KSLLzdhXJ0Fr2huSD7BvoMlBMOMUQBKyKXPzhKI01_Ot-C_w8g' + scrypt.verify(validHash, undefined).should.eventually.be.rejected + scrypt.verify(validHash, null).should.eventually.be.rejected + scrypt.verify(validHash, 123.4).should.eventually.be.rejected + scrypt.verify(validHash, NaN).should.eventually.be.rejected + scrypt.verify(validHash, ['some', 'arbitrary', 'values']).should.eventually.be.rejected + scrypt.verify(validHash, { some: 'arbitrary values' }).should.eventually.be.rejected + scrypt.verify(validHash, Symbol('something else')).should.eventually.be.rejected + scrypt.verify(validHash, () => "no, you can't do this either").should.eventually.be.rejected + }) + it('throws an error when the hash is not the expected format', async function () { + const validHash = 'e.WCu8zB9FHLhXaAf5Svn7NE4ySqB5X45X.ZLpxVwLz1816kmshqXHn12X_4_lZD_0Yl-27KSLLzdhXJ0Fr2huSD7BvoMlBMOMUQBKyKXPzhKI01_Ot-C_w8g' + const hashParts = validHash.split('.') + async function checkThrows(value, cause) { + let thrown + try { + await scrypt.verify(value, 'bad password') + thrown = false + } catch (e) { + thrown = true + e.should.be.an.instanceof(scrypt.ParseError) + expect(e.malformedString).to.eq(value) + if (cause) + expect(e.cause).to.be.an.instanceof(cause) + else + expect(e.cause).to.be.undefined + } + thrown.should.be.true + } + await checkThrows(undefined, TypeError) + await checkThrows(1234, TypeError) + await checkThrows(null, TypeError) + await checkThrows([1, 2, 3], TypeError) + scrypt.verify({ + // This is technically valid, why try to prevent it? 🤷 + split: () => hashParts + }, 'bad password').should.eventually.be.true + await checkThrows({}, TypeError) + + await checkThrows(validHash.substring(1)) // No cost + // no salt + await checkThrows('e..' + hashParts[2]) + // no key + await checkThrows(hashParts[0] + '.' + hashParts[1]) + await checkThrows('...') + await checkThrows('') + }) +}) + +describe('verifySync() error cases', function () { + it('throws an error when the password is not the right thing', function () { + const validHash = 'e.WCu8zB9FHLhXaAf5Svn7NE4ySqB5X45X.ZLpxVwLz1816kmshqXHn12X_4_lZD_0Yl-27KSLLzdhXJ0Fr2huSD7BvoMlBMOMUQBKyKXPzhKI01_Ot-C_w8g' + scrypt.verifySync.bind(undefined, validHash, undefined).should.throw() + scrypt.verifySync.bind(undefined, validHash, null).should.throw() + scrypt.verifySync.bind(undefined, validHash, 123.4).should.throw() + scrypt.verifySync.bind(undefined, validHash, NaN).should.throw() + scrypt.verifySync.bind(undefined, validHash, ['some', 'arbitrary', 'values']).should.throw() + scrypt.verifySync.bind(undefined, validHash, { some: 'arbitrary values' }).should.throw() + scrypt.verifySync.bind(undefined, validHash, Symbol('something else')).should.throw() + scrypt.verifySync.bind(undefined, validHash, () => "no, you can't do this either").should.throw() + scrypt.verifySync.bind(undefined, validHash, Promise.resolve("no, you can't do this either")).should.throw() + }) + it('throws an error when the hash is not the expected format', function () { + const validHash = 'e.WCu8zB9FHLhXaAf5Svn7NE4ySqB5X45X.ZLpxVwLz1816kmshqXHn12X_4_lZD_0Yl-27KSLLzdhXJ0Fr2huSD7BvoMlBMOMUQBKyKXPzhKI01_Ot-C_w8g' + const hashParts = validHash.split('.') + function checkThrows(value, cause) { + let thrown + try { + scrypt.verifySync(value, 'bad password') + thrown = false + } catch (e) { + thrown = true + e.should.be.an.instanceof(scrypt.ParseError) + expect(e.malformedString).to.eq(value) + if (cause) + expect(e.cause).to.be.an.instanceof(cause) + else + expect(e.cause).to.be.undefined + } + thrown.should.be.true + } + checkThrows(undefined, TypeError) + checkThrows(1234, TypeError) + checkThrows(null, TypeError) + checkThrows([1, 2, 3], TypeError) + scrypt.verify({ + // This is technically valid, why try to prevent it? 🤷 + split: () => hashParts + }, 'bad password').should.eventually.be.true + checkThrows({}, TypeError) + + checkThrows(validHash.substring(1)) // No cost + // no salt + checkThrows('e..' + hashParts[2]) + // no key + checkThrows(hashParts[0] + '.' + hashParts[1]) + checkThrows('...') + checkThrows('') + }) +}) \ No newline at end of file diff --git a/yarn.lock b/yarn.lock new file mode 100644 index 0000000..06fac9a --- /dev/null +++ b/yarn.lock @@ -0,0 +1,585 @@ +# THIS IS AN AUTOGENERATED FILE. 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