mirror of
https://github.com/denoland/deno.git
synced 2024-11-01 09:24:20 -04:00
827 lines
22 KiB
JavaScript
827 lines
22 KiB
JavaScript
// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
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// @ts-check
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/// <reference path="../../core/internal.d.ts" />
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/// <reference path="../../core/lib.deno_core.d.ts" />
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/// <reference path="../webidl/internal.d.ts" />
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/// <reference path="../web/lib.deno_web.d.ts" />
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"use strict";
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((window) => {
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const core = window.Deno.core;
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const webidl = window.__bootstrap.webidl;
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const { DOMException } = window.__bootstrap.domException;
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const {
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ArrayPrototypeFind,
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ArrayBufferIsView,
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ArrayPrototypeIncludes,
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StringPrototypeToUpperCase,
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Symbol,
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SymbolFor,
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SymbolToStringTag,
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WeakMap,
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WeakMapPrototypeGet,
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WeakMapPrototypeSet,
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Int8Array,
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Uint8Array,
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TypedArrayPrototypeSlice,
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Int16Array,
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Uint16Array,
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Int32Array,
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Uint32Array,
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Uint8ClampedArray,
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TypeError,
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} = window.__bootstrap.primordials;
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// P-521 is not yet supported.
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const supportedNamedCurves = ["P-256", "P-384"];
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const simpleAlgorithmDictionaries = {
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RsaHashedKeyGenParams: { hash: "HashAlgorithmIdentifier" },
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EcKeyGenParams: {},
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HmacKeyGenParams: { hash: "HashAlgorithmIdentifier" },
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RsaPssParams: {},
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EcdsaParams: { hash: "HashAlgorithmIdentifier" },
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};
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const supportedAlgorithms = {
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"digest": {
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"SHA-1": null,
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"SHA-256": null,
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"SHA-384": null,
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"SHA-512": null,
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},
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"generateKey": {
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"RSASSA-PKCS1-v1_5": "RsaHashedKeyGenParams",
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"RSA-PSS": "RsaHashedKeyGenParams",
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"ECDSA": "EcKeyGenParams",
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"HMAC": "HmacKeyGenParams",
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},
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"sign": {
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"RSASSA-PKCS1-v1_5": null,
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"RSA-PSS": "RsaPssParams",
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"ECDSA": "EcdsaParams",
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"HMAC": null,
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},
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"verify": {
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"RSASSA-PKCS1-v1_5": null,
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"RSA-PSS": "RsaPssParams",
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},
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};
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// See https://www.w3.org/TR/WebCryptoAPI/#dfn-normalize-an-algorithm
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function normalizeAlgorithm(algorithm, op) {
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if (typeof algorithm == "string") {
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return normalizeAlgorithm({ name: algorithm }, op);
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}
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// 1.
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const registeredAlgorithms = supportedAlgorithms[op];
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// 2. 3.
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const initialAlg = webidl.converters.Algorithm(algorithm, {
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prefix: "Failed to normalize algorithm",
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context: "passed algorithm",
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});
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// 4.
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let algName = initialAlg.name;
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// 5.
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let desiredType = undefined;
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for (const key in registeredAlgorithms) {
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if (
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StringPrototypeToUpperCase(key) === StringPrototypeToUpperCase(algName)
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) {
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algName = key;
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desiredType = registeredAlgorithms[key];
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}
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}
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if (desiredType === undefined) {
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throw new DOMException(
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"Unrecognized algorithm name",
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"NotSupportedError",
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);
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}
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// Fast path everything below if the registered dictionary is "None".
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if (desiredType === null) {
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return { name: algName };
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}
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const normalizedAlgorithm = webidl.converters[desiredType](algorithm, {
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prefix: "Failed to normalize algorithm",
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context: "passed algorithm",
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});
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normalizedAlgorithm.name = algName;
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const dict = simpleAlgorithmDictionaries[desiredType];
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for (const member in dict) {
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const idlType = dict[member];
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const idlValue = normalizedAlgorithm[member];
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if (idlType === "BufferSource") {
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normalizedAlgorithm[member] = new Uint8Array(
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TypedArrayPrototypeSlice(
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(ArrayBufferIsView(idlValue) ? idlValue.buffer : idlValue),
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idlValue.byteOffset ?? 0,
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idlValue.byteLength,
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),
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);
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} else if (idlType === "HashAlgorithmIdentifier") {
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normalizedAlgorithm[member] = normalizeAlgorithm(idlValue, "digest");
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} else if (idlType === "AlgorithmIdentifier") {
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// TODO(lucacasonato): implement
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throw new TypeError("unimplemented");
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}
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}
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return normalizedAlgorithm;
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}
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const _handle = Symbol("[[handle]]");
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const _algorithm = Symbol("[[algorithm]]");
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const _extractable = Symbol("[[extractable]]");
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const _usages = Symbol("[[usages]]");
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const _type = Symbol("[[type]]");
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class CryptoKey {
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/** @type {string} */
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[_type];
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/** @type {boolean} */
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[_extractable];
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/** @type {object} */
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[_algorithm];
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/** @type {string[]} */
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[_usages];
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/** @type {object} */
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[_handle];
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constructor() {
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webidl.illegalConstructor();
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}
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/** @returns {string} */
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get type() {
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webidl.assertBranded(this, CryptoKey);
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return this[_type];
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}
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/** @returns {boolean} */
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get extractable() {
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webidl.assertBranded(this, CryptoKey);
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return this[_extractable];
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}
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/** @returns {string[]} */
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get usages() {
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webidl.assertBranded(this, CryptoKey);
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// TODO(lucacasonato): return a SameObject copy
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return this[_usages];
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}
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/** @returns {object} */
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get algorithm() {
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webidl.assertBranded(this, CryptoKey);
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// TODO(lucacasonato): return a SameObject copy
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return this[_algorithm];
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}
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get [Symbol.toStringTag]() {
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return "CryptoKey";
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}
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[SymbolFor("Deno.customInspect")](inspect) {
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return `${this.constructor.name} ${
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inspect({
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type: this.type,
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extractable: this.extractable,
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algorithm: this.algorithm,
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usages: this.usages,
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})
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}`;
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}
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}
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webidl.configurePrototype(CryptoKey);
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/**
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* @param {string} type
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* @param {boolean} extractable
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* @param {string[]} usages
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* @param {object} algorithm
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* @param {object} handle
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* @returns
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*/
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function constructKey(type, extractable, usages, algorithm, handle) {
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const key = webidl.createBranded(CryptoKey);
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key[_type] = type;
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key[_extractable] = extractable;
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key[_usages] = usages;
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key[_algorithm] = algorithm;
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key[_handle] = handle;
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return key;
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}
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// https://w3c.github.io/webcrypto/#concept-usage-intersection
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// TODO(littledivy): When the need arises, make `b` a list.
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/**
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* @param {string[]} a
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* @param {string} b
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* @returns
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*/
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function usageIntersection(a, b) {
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return ArrayPrototypeIncludes(a, b) ? [b] : [];
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}
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// TODO(lucacasonato): this should be moved to rust
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/** @type {WeakMap<object, object>} */
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const KEY_STORE = new WeakMap();
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class SubtleCrypto {
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constructor() {
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webidl.illegalConstructor();
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}
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/**
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* @param {string} algorithm
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* @param {BufferSource} data
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* @returns {Promise<Uint8Array>}
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*/
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async digest(algorithm, data) {
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webidl.assertBranded(this, SubtleCrypto);
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const prefix = "Failed to execute 'digest' on 'SubtleCrypto'";
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webidl.requiredArguments(arguments.length, 2, { prefix });
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algorithm = webidl.converters.AlgorithmIdentifier(algorithm, {
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prefix,
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context: "Argument 1",
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});
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data = webidl.converters.BufferSource(data, {
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prefix,
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context: "Argument 2",
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});
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if (ArrayBufferIsView(data)) {
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data = new Uint8Array(data.buffer, data.byteOffset, data.byteLength);
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} else {
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data = new Uint8Array(data);
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}
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data = TypedArrayPrototypeSlice(data);
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algorithm = normalizeAlgorithm(algorithm, "digest");
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const result = await core.opAsync(
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"op_crypto_subtle_digest",
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algorithm.name,
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data,
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);
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return result.buffer;
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}
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/**
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* @param {string} algorithm
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* @param {CryptoKey} key
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* @param {BufferSource} data
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* @returns {Promise<any>}
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*/
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async sign(algorithm, key, data) {
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webidl.assertBranded(this, SubtleCrypto);
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const prefix = "Failed to execute 'sign' on 'SubtleCrypto'";
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webidl.requiredArguments(arguments.length, 3, { prefix });
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algorithm = webidl.converters.AlgorithmIdentifier(algorithm, {
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prefix,
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context: "Argument 1",
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});
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key = webidl.converters.CryptoKey(key, {
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prefix,
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context: "Argument 2",
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});
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data = webidl.converters.BufferSource(data, {
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prefix,
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context: "Argument 3",
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});
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// 1.
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if (ArrayBufferIsView(data)) {
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data = new Uint8Array(data.buffer, data.byteOffset, data.byteLength);
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} else {
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data = new Uint8Array(data);
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}
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data = TypedArrayPrototypeSlice(data);
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// 2.
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const normalizedAlgorithm = normalizeAlgorithm(algorithm, "sign");
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const handle = key[_handle];
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const keyData = WeakMapPrototypeGet(KEY_STORE, handle);
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// 8.
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if (normalizedAlgorithm.name !== key[_algorithm].name) {
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throw new DOMException(
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"Signing algorithm doesn't match key algorithm.",
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"InvalidAccessError",
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);
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}
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// 9.
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if (!ArrayPrototypeIncludes(key[_usages], "sign")) {
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throw new DOMException(
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"Key does not support the 'sign' operation.",
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"InvalidAccessError",
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);
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}
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switch (normalizedAlgorithm.name) {
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case "RSASSA-PKCS1-v1_5": {
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// 1.
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if (key[_type] !== "private") {
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throw new DOMException(
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"Key type not supported",
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"InvalidAccessError",
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);
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}
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// 2.
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const hashAlgorithm = key[_algorithm].hash.name;
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const signature = await core.opAsync("op_crypto_sign_key", {
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key: keyData,
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algorithm: "RSASSA-PKCS1-v1_5",
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hash: hashAlgorithm,
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}, data);
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return signature.buffer;
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}
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case "RSA-PSS": {
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// 1.
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if (key[_type] !== "private") {
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throw new DOMException(
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"Key type not supported",
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"InvalidAccessError",
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);
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}
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// 2.
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const hashAlgorithm = key[_algorithm].hash.name;
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const signature = await core.opAsync("op_crypto_sign_key", {
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key: keyData,
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algorithm: "RSA-PSS",
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hash: hashAlgorithm,
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saltLength: normalizedAlgorithm.saltLength,
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}, data);
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return signature.buffer;
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}
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case "ECDSA": {
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// 1.
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if (key[_type] !== "private") {
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throw new DOMException(
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"Key type not supported",
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"InvalidAccessError",
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);
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}
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// 2.
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const hashAlgorithm = normalizedAlgorithm.hash.name;
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const namedCurve = key[_algorithm].namedCurve;
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if (!ArrayPrototypeIncludes(supportedNamedCurves, namedCurve)) {
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throw new DOMException("Curve not supported", "NotSupportedError");
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}
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const signature = await core.opAsync("op_crypto_sign_key", {
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key: keyData,
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algorithm: "ECDSA",
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hash: hashAlgorithm,
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namedCurve,
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}, data);
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return signature.buffer;
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}
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case "HMAC": {
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const hashAlgorithm = key[_algorithm].hash.name;
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const signature = await core.opAsync("op_crypto_sign_key", {
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key: keyData,
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algorithm: "HMAC",
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hash: hashAlgorithm,
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}, data);
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return signature.buffer;
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}
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}
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throw new TypeError("unreachable");
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}
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/**
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* @param {string} algorithm
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* @param {CryptoKey} key
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* @param {BufferSource} signature
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* @param {BufferSource} data
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* @returns {Promise<boolean>}
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*/
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async verify(algorithm, key, signature, data) {
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webidl.assertBranded(this, SubtleCrypto);
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const prefix = "Failed to execute 'verify' on 'SubtleCrypto'";
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webidl.requiredArguments(arguments.length, 4, { prefix });
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algorithm = webidl.converters.AlgorithmIdentifier(algorithm, {
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prefix,
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context: "Argument 1",
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});
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key = webidl.converters.CryptoKey(key, {
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prefix,
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context: "Argument 2",
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});
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signature = webidl.converters.BufferSource(signature, {
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prefix,
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context: "Argument 3",
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});
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data = webidl.converters.BufferSource(data, {
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prefix,
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context: "Argument 4",
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});
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// 2.
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if (ArrayBuffer.isView(signature)) {
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signature = new Uint8Array(
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signature.buffer,
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signature.byteOffset,
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signature.byteLength,
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);
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} else {
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signature = new Uint8Array(signature);
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}
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signature = signature.slice();
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// 3.
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if (ArrayBuffer.isView(data)) {
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data = new Uint8Array(data.buffer, data.byteOffset, data.byteLength);
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} else {
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data = new Uint8Array(data);
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}
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data = data.slice();
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const normalizedAlgorithm = normalizeAlgorithm(algorithm, "verify");
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const handle = key[_handle];
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const keyData = KEY_STORE.get(handle);
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if (normalizedAlgorithm.name !== key[_algorithm].name) {
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throw new DOMException(
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"Verifying algorithm doesn't match key algorithm.",
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"InvalidAccessError",
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);
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}
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if (!key[_usages].includes("verify")) {
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throw new DOMException(
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"Key does not support the 'verify' operation.",
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"InvalidAccessError",
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);
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}
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switch (normalizedAlgorithm.name) {
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case "RSASSA-PKCS1-v1_5": {
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if (key[_type] !== "public") {
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throw new DOMException(
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"Key type not supported",
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"InvalidAccessError",
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);
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}
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const hashAlgorithm = key[_algorithm].hash.name;
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return await core.opAsync("op_crypto_verify_key", {
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key: keyData,
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algorithm: "RSASSA-PKCS1-v1_5",
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hash: hashAlgorithm,
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signature,
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}, data);
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}
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case "RSA-PSS": {
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if (key[_type] !== "public") {
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throw new DOMException(
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"Key type not supported",
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"InvalidAccessError",
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);
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}
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const hashAlgorithm = key[_algorithm].hash.name;
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const saltLength = normalizedAlgorithm.saltLength;
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return await core.opAsync("op_crypto_verify_key", {
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key: keyData,
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algorithm: "RSA-PSS",
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hash: hashAlgorithm,
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saltLength,
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signature,
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}, data);
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}
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}
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throw new TypeError("unreachable");
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}
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|
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/**
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* @param {string} algorithm
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* @param {boolean} extractable
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* @param {KeyUsage[]} keyUsages
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* @returns {Promise<any>}
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*/
|
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async generateKey(algorithm, extractable, keyUsages) {
|
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webidl.assertBranded(this, SubtleCrypto);
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const prefix = "Failed to execute 'generateKey' on 'SubtleCrypto'";
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webidl.requiredArguments(arguments.length, 3, { prefix });
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algorithm = webidl.converters.AlgorithmIdentifier(algorithm, {
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prefix,
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context: "Argument 1",
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});
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extractable = webidl.converters["boolean"](extractable, {
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prefix,
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context: "Argument 2",
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});
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keyUsages = webidl.converters["sequence<KeyUsage>"](keyUsages, {
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prefix,
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context: "Argument 3",
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});
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const usages = keyUsages;
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const normalizedAlgorithm = normalizeAlgorithm(algorithm, "generateKey");
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|
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// https://github.com/denoland/deno/pull/9614#issuecomment-866049433
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if (!extractable) {
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throw new DOMException(
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"Non-extractable keys are not supported",
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"SecurityError",
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);
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}
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|
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const result = await generateKey(
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normalizedAlgorithm,
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extractable,
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usages,
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);
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|
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if (result instanceof CryptoKey) {
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const type = result[_type];
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if ((type === "secret" || type === "private") && usages.length === 0) {
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throw new DOMException("Invalid key usages", "SyntaxError");
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}
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} else if (result.privateKey instanceof CryptoKey) {
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if (result.privateKey[_usages].length === 0) {
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throw new DOMException("Invalid key usages", "SyntaxError");
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}
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}
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|
|
return result;
|
|
}
|
|
|
|
get [SymbolToStringTag]() {
|
|
return "SubtleCrypto";
|
|
}
|
|
}
|
|
|
|
async function generateKey(normalizedAlgorithm, extractable, usages) {
|
|
switch (normalizedAlgorithm.name) {
|
|
case "RSASSA-PKCS1-v1_5":
|
|
case "RSA-PSS": {
|
|
// 1.
|
|
if (
|
|
ArrayPrototypeFind(
|
|
usages,
|
|
(u) => !ArrayPrototypeIncludes(["sign", "verify"], u),
|
|
) !== undefined
|
|
) {
|
|
throw new DOMException("Invalid key usages", "SyntaxError");
|
|
}
|
|
|
|
// 2.
|
|
const keyData = await core.opAsync(
|
|
"op_crypto_generate_key",
|
|
{
|
|
name: normalizedAlgorithm.name,
|
|
modulusLength: normalizedAlgorithm.modulusLength,
|
|
publicExponent: normalizedAlgorithm.publicExponent,
|
|
},
|
|
);
|
|
const handle = {};
|
|
WeakMapPrototypeSet(KEY_STORE, handle, {
|
|
type: "pkcs8",
|
|
data: keyData,
|
|
});
|
|
|
|
// 4-8.
|
|
const algorithm = {
|
|
name: normalizedAlgorithm.name,
|
|
modulusLength: normalizedAlgorithm.modulusLength,
|
|
publicExponent: normalizedAlgorithm.publicExponent,
|
|
hash: normalizedAlgorithm.hash,
|
|
};
|
|
|
|
// 9-13.
|
|
const publicKey = constructKey(
|
|
"public",
|
|
true,
|
|
usageIntersection(usages, "verify"),
|
|
algorithm,
|
|
handle,
|
|
);
|
|
|
|
// 14-18.
|
|
const privateKey = constructKey(
|
|
"private",
|
|
extractable,
|
|
usageIntersection(usages, "sign"),
|
|
algorithm,
|
|
handle,
|
|
);
|
|
|
|
// 19-22.
|
|
return { publicKey, privateKey };
|
|
}
|
|
// TODO(lucacasonato): RSA-OAEP
|
|
case "ECDSA": {
|
|
// 1.
|
|
if (
|
|
ArrayPrototypeFind(
|
|
usages,
|
|
(u) => !ArrayPrototypeIncludes(["sign", "verify"], u),
|
|
) !== undefined
|
|
) {
|
|
throw new DOMException("Invalid key usages", "SyntaxError");
|
|
}
|
|
|
|
// 2-3.
|
|
const handle = {};
|
|
if (
|
|
ArrayPrototypeIncludes(
|
|
supportedNamedCurves,
|
|
normalizedAlgorithm.namedCurve,
|
|
)
|
|
) {
|
|
const keyData = await core.opAsync("op_crypto_generate_key", {
|
|
name: "ECDSA",
|
|
namedCurve: normalizedAlgorithm.namedCurve,
|
|
});
|
|
WeakMapPrototypeSet(KEY_STORE, handle, {
|
|
type: "pkcs8",
|
|
data: keyData,
|
|
});
|
|
} else {
|
|
throw new DOMException("Curve not supported", "NotSupportedError");
|
|
}
|
|
|
|
// 4-6.
|
|
const algorithm = {
|
|
name: "ECDSA",
|
|
namedCurve: normalizedAlgorithm.namedCurve,
|
|
};
|
|
|
|
// 7-11.
|
|
const publicKey = constructKey(
|
|
"public",
|
|
true,
|
|
usageIntersection(usages, "verify"),
|
|
algorithm,
|
|
handle,
|
|
);
|
|
|
|
// 12-16.
|
|
const privateKey = constructKey(
|
|
"private",
|
|
extractable,
|
|
usageIntersection(usages, "sign"),
|
|
algorithm,
|
|
handle,
|
|
);
|
|
|
|
// 17-20.
|
|
return { publicKey, privateKey };
|
|
}
|
|
// TODO(lucacasonato): ECDH
|
|
// TODO(lucacasonato): AES-CTR
|
|
// TODO(lucacasonato): AES-CBC
|
|
// TODO(lucacasonato): AES-GCM
|
|
// TODO(lucacasonato): AES-KW
|
|
case "HMAC": {
|
|
// 1.
|
|
if (
|
|
ArrayPrototypeFind(
|
|
usages,
|
|
(u) => !ArrayPrototypeIncludes(["sign", "verify"], u),
|
|
) !== undefined
|
|
) {
|
|
throw new DOMException("Invalid key usages", "SyntaxError");
|
|
}
|
|
|
|
// 2.
|
|
let length;
|
|
if (normalizedAlgorithm.length === undefined) {
|
|
length = null;
|
|
} else if (normalizedAlgorithm.length !== 0) {
|
|
length = normalizedAlgorithm.length;
|
|
} else {
|
|
throw new DOMException("Invalid length", "OperationError");
|
|
}
|
|
|
|
// 3-4.
|
|
const keyData = await core.opAsync("op_crypto_generate_key", {
|
|
name: "HMAC",
|
|
hash: normalizedAlgorithm.hash.name,
|
|
length,
|
|
});
|
|
const handle = {};
|
|
WeakMapPrototypeSet(KEY_STORE, handle, { type: "raw", data: keyData });
|
|
|
|
// 6-10.
|
|
const algorithm = {
|
|
name: "HMAC",
|
|
hash: {
|
|
name: normalizedAlgorithm.hash.name,
|
|
},
|
|
length: keyData.byteLength * 8,
|
|
};
|
|
|
|
// 5, 11-13.
|
|
const key = constructKey(
|
|
"secret",
|
|
extractable,
|
|
usages,
|
|
algorithm,
|
|
handle,
|
|
);
|
|
|
|
// 14.
|
|
return key;
|
|
}
|
|
}
|
|
}
|
|
|
|
const subtle = webidl.createBranded(SubtleCrypto);
|
|
|
|
class Crypto {
|
|
constructor() {
|
|
webidl.illegalConstructor();
|
|
}
|
|
|
|
getRandomValues(arrayBufferView) {
|
|
webidl.assertBranded(this, Crypto);
|
|
const prefix = "Failed to execute 'getRandomValues' on 'Crypto'";
|
|
webidl.requiredArguments(arguments.length, 1, { prefix });
|
|
arrayBufferView = webidl.converters.ArrayBufferView(arrayBufferView, {
|
|
prefix,
|
|
context: "Argument 1",
|
|
});
|
|
if (
|
|
!(
|
|
arrayBufferView instanceof Int8Array ||
|
|
arrayBufferView instanceof Uint8Array ||
|
|
arrayBufferView instanceof Int16Array ||
|
|
arrayBufferView instanceof Uint16Array ||
|
|
arrayBufferView instanceof Int32Array ||
|
|
arrayBufferView instanceof Uint32Array ||
|
|
arrayBufferView instanceof Uint8ClampedArray
|
|
)
|
|
) {
|
|
throw new DOMException(
|
|
"The provided ArrayBufferView is not an integer array type",
|
|
"TypeMismatchError",
|
|
);
|
|
}
|
|
const ui8 = new Uint8Array(
|
|
arrayBufferView.buffer,
|
|
arrayBufferView.byteOffset,
|
|
arrayBufferView.byteLength,
|
|
);
|
|
core.opSync("op_crypto_get_random_values", ui8);
|
|
return arrayBufferView;
|
|
}
|
|
|
|
randomUUID() {
|
|
webidl.assertBranded(this, Crypto);
|
|
return core.opSync("op_crypto_random_uuid");
|
|
}
|
|
|
|
get subtle() {
|
|
webidl.assertBranded(this, Crypto);
|
|
return subtle;
|
|
}
|
|
|
|
get [SymbolToStringTag]() {
|
|
return "Crypto";
|
|
}
|
|
|
|
[SymbolFor("Deno.customInspect")](inspect) {
|
|
return `${this.constructor.name} ${inspect({})}`;
|
|
}
|
|
}
|
|
|
|
webidl.configurePrototype(Crypto);
|
|
|
|
window.__bootstrap.crypto = {
|
|
SubtleCrypto,
|
|
crypto: webidl.createBranded(Crypto),
|
|
Crypto,
|
|
CryptoKey,
|
|
};
|
|
})(this);
|