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doc: crypto.randomBytes does not block when async · nodejs/node@4c26913

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@@ -1540,7 +1540,8 @@ console.log(

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`${buf.length} bytes of random data: ${buf.toString('hex')}`);

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```

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The `crypto.randomBytes()` method will block until there is sufficient entropy.

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The `crypto.randomBytes()` method will not complete until there is

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sufficient entropy available.

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This should normally never take longer than a few milliseconds. The only time

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when generating the random bytes may conceivably block for a longer period of

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time is right after boot, when the whole system is still low on entropy.