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crypto: alias webcrypto.subtle and webcrypto.getRandomValues on crypto #41266

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merged 3 commits into from Dec 27, 2021
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crypto: alias webcrypto.subtle and webcrypto.getRandomValues on crypto #41266

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crypto: alias webcrypto.subtle and webcrypto.getRandomValues on crypto
jasnell Dec 21, 2021
195d391
[Squash] nits
jasnell Dec 21, 2021
1eebe39
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jasnell Dec 23, 2021
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23 changes: 23 additions & 0 deletions doc/api/crypto.md
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Expand Up @@ -4015,6 +4015,17 @@ const {
console.log(getHashes()); // ['DSA', 'DSA-SHA', 'DSA-SHA1', ...]
```

### `crypto.getRandomValues(typedArray)`

<!-- YAML
added: REPLACEME
-->

* `typedArray` {Buffer|TypedArray|DataView|ArrayBuffer}
* Returns: {Buffer|TypedArray|DataView|ArrayBuffer} Returns `typedArray`.

A convenient alias for [`crypto.webcrypto.getRandomValues()`][].

### `crypto.hkdf(digest, ikm, salt, info, keylen, callback)`

<!-- YAML
Expand Down Expand Up @@ -5194,6 +5205,16 @@ additional properties can be passed:

If the `callback` function is provided this function uses libuv's threadpool.

### `crypto.subtle`

<!-- YAML
added: REPLACEME
-->

* Type: {SubtleCrypto}

A convenient alias for [`crypto.webcrypto.subtle`][].

### `crypto.timingSafeEqual(a, b)`

<!-- YAML
Expand Down Expand Up @@ -5908,6 +5929,8 @@ See the [list of SSL OP Flags][] for details.
[`crypto.randomBytes()`]: #cryptorandombytessize-callback
[`crypto.randomFill()`]: #cryptorandomfillbuffer-offset-size-callback
[`crypto.scrypt()`]: #cryptoscryptpassword-salt-keylen-options-callback
[`crypto.webcrypto.getRandomValues()`]: webcrypto.md#cryptogetrandomvaluestypedarray
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[`crypto.webcrypto.subtle`]: webcrypto.md#class-subtlecrypto
[`decipher.final()`]: #decipherfinaloutputencoding
[`decipher.update()`]: #decipherupdatedata-inputencoding-outputencoding
[`diffieHellman.setPublicKey()`]: #diffiehellmansetpublickeypublickey-encoding
Expand Down
24 changes: 22 additions & 2 deletions lib/crypto.js
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Expand Up @@ -119,11 +119,16 @@ const {
getHashes,
setDefaultEncoding,
setEngine,
lazyRequire,
secureHeapUsed,
} = require('internal/crypto/util');
const Certificate = require('internal/crypto/certificate');

let webcrypto;
function lazyWebCrypto() {
webcrypto ??= require('internal/crypto/webcrypto');
return webcrypto;
}

// These helper functions are needed because the constructors can
// use new, in which case V8 cannot inline the recursive constructor call
function createHash(algorithm, options) {
Expand Down Expand Up @@ -284,7 +289,22 @@ ObjectDefineProperties(module.exports, {
webcrypto: {
configurable: false,
enumerable: true,
get() { return lazyRequire('internal/crypto/webcrypto').crypto; }
get() { return lazyWebCrypto().crypto; },
set: undefined,
},

subtle: {
configurable: false,
enumerable: true,
get() { return lazyWebCrypto().crypto.subtle; },
set: undefined,
},

getRandomValues: {
configurable: false,
enumerable: true,
get() { return lazyWebCrypto().crypto.getRandomValues; },
set: undefined,
},

// Aliases for randomBytes are deprecated.
Expand Down