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Elaborate about SecureRandom existence

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ROllerozxa 2023-12-24 17:12:45 +01:00
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@ -76,7 +76,7 @@ WARNING: Requires `((max - min) == 32767) or ((max-min) <= 6553))` for a proper
### `SecureRandom`
System-provided cryptographically secure random: An attacker should not be able to predict the generated sequence of random numbers. Use this when generating cryptographic keys or tokens.
Not necessarily available in all builds and on all platforms.
On Windows, the Win32 Crypto API is used to retrieve cryptographically secure random values which is available on every supported version of Windows. On any other platform it is retrieved from `/dev/urandom` which should be available on all Unix-like platforms such as Linux and Android. However it is theoretically still possible that a secure random source is not available, and you should use an assertion to make sure that a SecureRandom object is actually returned (see below).
#### `SecureRandom()`
Constructor: Returns a SecureRandom object or `nil` if no secure random source is available.