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// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
"use strict";
((window) => {
const core = window.Deno.core;
const webidl = window.__bootstrap.webidl;
const supportedAlgorithms = {
"digest": {
"SHA-1": {},
"SHA-256": {},
"SHA-384": {},
"SHA-512": {},
},
};
function normalizeAlgorithm(algorithm, op) {
if (typeof algorithm == "string") {
return normalizeAlgorithm({ name: algorithm }, op);
}
const initialAlgorithm = webidl.converters["Algorithm"](algorithm, {
context: "Argument 1",
});
const registeredAlgorithms = supportedAlgorithms[op];
const algorithmName = Object.keys(registeredAlgorithms)
.find((key) => key.toLowerCase() == initialAlgorithm.name.toLowerCase());
if (algorithmName === undefined) {
throw new DOMException(
"Unrecognized algorithm name",
"NotSupportedError",
);
}
// TODO(caspervonb) Step 6 (create from webidl definition), when the need arises.
// See https://www.w3.org/TR/WebCryptoAPI/#dfn-normalize-an-algorithm
const normalizedAlgorithm = {};
normalizedAlgorithm.name = algorithmName;
// TODO(caspervonb) Step 9 and 10, when the need arises.
// See https://www.w3.org/TR/WebCryptoAPI/#dfn-normalize-an-algorithm
return normalizedAlgorithm;
}
// Should match op_crypto_subtle_digest() in extensions/crypto/lib.rs
function digestToId(name) {
switch (name) {
case "SHA-1":
return 0;
case "SHA-256":
return 1;
case "SHA-384":
return 2;
case "SHA-512":
return 3;
}
}
class SubtleCrypto {
constructor() {
webidl.illegalConstructor();
}
async digest(algorithm, data) {
const prefix = "Failed to execute 'digest' on 'SubtleCrypto'";
webidl.assertBranded(this, SubtleCrypto);
webidl.requiredArguments(arguments.length, 2);
algorithm = webidl.converters.AlgorithmIdentifier(algorithm, {
prefix,
context: "Argument 1",
});
data = webidl.converters.BufferSource(data, {
prefix,
context: "Argument 2",
});
if (ArrayBuffer.isView(data)) {
data = new Uint8Array(data.buffer, data.byteOffset, data.byteLength);
} else {
data = new Uint8Array(data);
}
data = data.slice();
algorithm = normalizeAlgorithm(algorithm, "digest");
const result = await core.opAsync(
"op_crypto_subtle_digest",
digestToId(algorithm.name),
data,
);
return result.buffer;
}
}
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 [Symbol.toStringTag]() {
return "Crypto";
}
[Symbol.for("Deno.customInspect")](inspect) {
return `${this.constructor.name} ${inspect({})}`;
}
}
webidl.configurePrototype(Crypto);
window.__bootstrap.crypto = {
SubtleCrypto,
crypto: webidl.createBranded(Crypto),
Crypto,
};
})(this);
|
