commit | 994b53262bc1503604fbbf5876258af65ba89083 | [log] [tgz] |
---|---|---|
author | Matthew Maurer <mmaurer@google.com> | Thu Mar 09 19:08:42 2023 +0000 |
committer | Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com> | Thu Mar 09 19:08:42 2023 +0000 |
tree | 0d0d33f47335cd7317ffa4ac221ff6d6a64a725a | |
parent | d754d993eb7ccc8ed5d408e8bf1bfd1c600fec7f [diff] | |
parent | 44f0b010f2e47026530b79e3d6ddd829e6087e4a [diff] |
Make rand_chacha available to product and vendor am: 63509b91b6 am: e7eaedf402 am: cb18d8725f am: 7fb741f77a am: 44f0b010f2 Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/rand_chacha/+/2476394 Change-Id: Ibb3b104fd4337774069cc008420716af10388b45 Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
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.