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doc: correct crypto.randomFill() and randomFillSync() #21550

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df0068d
doc: correct crypto.randomFill() and randomFillSync()
Flarna Jun 26, 2018
4305294
use .byteOffset and .byteLength to construct Buffer
Flarna Jun 27, 2018
6395f98
fix lint
Flarna Jul 12, 2018
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fix lint
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@Flarna
Flarna committed Jul 12, 2018
commit 6395f984b1c71b5fc82e79dad3b474193394a694
18 changes: 12 additions & 6 deletions doc/api/crypto.md
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Original file line number Diff line number Diff line change
Expand Up @@ -2061,13 +2061,16 @@ Any `TypedArray` or `DataView` instance may be passed as `buffer`.

```js
const a = new Uint32Array(10);
console.log(Buffer.from(crypto.randomFillSync(a).buffer, a.byteOffset, a.byteLength).toString('hex'));
console.log(Buffer.from(crypto.randomFillSync(a).buffer,
a.byteOffset, a.byteLength).toString('hex'));

const b = new Float64Array(10);
console.log(Buffer.from(crypto.randomFillSync(b).buffer, b.byteOffset, b.byteLength).toString('hex'));
console.log(Buffer.from(crypto.randomFillSync(b).buffer,
b.byteOffset, b.byteLength).toString('hex'));

const c = new DataView(new ArrayBuffer(10));
console.log(Buffer.from(crypto.randomFillSync(c).buffer, c.byteOffset, c.byteLength).toString('hex'));
console.log(Buffer.from(crypto.randomFillSync(c).buffer,
c.byteOffset, c.byteLength).toString('hex'));
```

### crypto.randomFill(buffer[, offset][, size], callback)
Expand Down Expand Up @@ -2115,19 +2118,22 @@ Any `TypedArray` or `DataView` instance may be passed as `buffer`.
const a = new Uint32Array(10);
crypto.randomFill(a, (err, buf) => {
if (err) throw err;
console.log(Buffer.from(buf.buffer, buf.byteOffset, buf.byteLength).toString('hex'));
console.log(Buffer.from(buf.buffer, buf.byteOffset, buf.byteLength)
.toString('hex'));
});

const b = new Float64Array(10);
crypto.randomFill(b, (err, buf) => {
if (err) throw err;
console.log(Buffer.from(buf.buffer, buf.byteOffset, buf.byteLength).toString('hex'));
console.log(Buffer.from(buf.buffer, buf.byteOffset, buf.byteLength)
.toString('hex'));
});

const c = new DataView(new ArrayBuffer(10));
crypto.randomFill(c, (err, buf) => {
if (err) throw err;
console.log(Buffer.from(buf.buffer, buf.byteOffset, buf.byteLength).toString('hex'));
console.log(Buffer.from(buf.buffer, buf.byteOffset, buf.byteLength)
.toString('hex'));
});
```

Expand Down