mirror of
https://github.com/denoland/deno.git
synced 2024-11-22 15:06:54 -05:00
36 lines
1.1 KiB
TypeScript
36 lines
1.1 KiB
TypeScript
|
// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
|
||
|
|
import * as msg from "gen/cli/msg_generated";
|
||
|
|
import * as flatbuffers from "./flatbuffers";
|
||
|
|
import * as dispatch from "./dispatch";
|
||
|
|
import { assert } from "./util";
|
||
|
|
|
||
|
|
function req(
|
||
|
|
typedArray: ArrayBufferView
|
||
|
|
): [flatbuffers.Builder, msg.Any, flatbuffers.Offset, ArrayBufferView] {
|
||
|
|
const builder = flatbuffers.createBuilder();
|
||
|
|
const inner = msg.GetRandomValues.createGetRandomValues(builder);
|
||
|
|
return [builder, msg.Any.GetRandomValues, inner, typedArray];
|
||
|
|
}
|
||
|
|
|
||
|
|
/** Synchronously collects cryptographically secure random values. The
|
||
|
|
* underlying CSPRNG in use is Rust's `rand::rngs::ThreadRng`.
|
||
|
|
*
|
||
|
|
* const arr = new Uint8Array(32);
|
||
|
|
* crypto.getRandomValues(arr);
|
||
|
|
*/
|
||
|
|
export function getRandomValues<
|
||
|
|
T extends
|
||
|
|
| Int8Array
|
||
|
|
| Uint8Array
|
||
|
|
| Uint8ClampedArray
|
||
|
|
| Int16Array
|
||
|
|
| Uint16Array
|
||
|
|
| Int32Array
|
||
|
|
| Uint32Array
|
||
|
|
>(typedArray: T): T {
|
||
|
|
assert(typedArray !== null, "Input must not be null");
|
||
|
|
assert(typedArray.length <= 65536, "Input must not be longer than 65536");
|
||
|
|
dispatch.sendSync(...req(typedArray as ArrayBufferView));
|
||
|
|
return typedArray;
|
||
|
|
}
|