| commit | 7d0cf72346811b3c4f58cca24ec36ad5b513d4d0 | [log] [tgz] |
|---|---|---|
| author | Android Build Coastguard Worker <[email protected]> | Tue Sep 10 23:12:16 2024 +0000 |
| committer | Android Build Coastguard Worker <[email protected]> | Tue Sep 10 23:12:16 2024 +0000 |
| tree | 233a0ec433e827ad7ab97f66bf48f815295bd0b2 | |
| parent | a0126e83b5c7545ddf5f711ece17dc9e77db92aa [diff] | |
| parent | 3c78343c47c85422f713e0106f3bca067a770f7c [diff] |
Snap for 12349386 from 3c78343c47c85422f713e0106f3bca067a770f7c to sdk-release Change-Id: I182adc9ddd55f999068b09c869500859e4d73aac
A cryptographically secure random number generator that uses the ChaCha algorithm.
ChaCha is a stream cipher designed by Daniel J. Bernstein[^1], that we use as an RNG. It is an improved variant of the Salsa20 cipher family, which was selected as one of the “stream ciphers suitable for widespread adoption” by eSTREAM[^2].
The RNGs provided by this crate are implemented via the fast stream ciphers of the c2-chacha crate.
Links:
[^1]: D. J. Bernstein, ChaCha, a variant of Salsa20
[^2]: eSTREAM: the ECRYPT Stream Cipher Project
rand_chacha is no_std compatible when disabling default features; the std feature can be explicitly required to re-enable std support. Using std allows detection of CPU features and thus better optimisation.
rand_chacha is distributed under the terms of both the MIT license and the Apache License (Version 2.0).
See LICENSE-APACHE and LICENSE-MIT, and COPYRIGHT for details.