Migrate to cargo_embargo. am: e2a9f1d164 am: 76964361b1 am: 4fd095ab98

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/rand_chacha/+/2822009

Change-Id: Ifc1bca6e5023199cf67771fd441925e6b90b7392
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
tree: 0ad487e6a7f942485925d4dca6abc54fec2c7ad7
  1. src/
  2. .cargo_vcs_info.json
  3. Android.bp
  4. Cargo.toml
  5. Cargo.toml.orig
  6. cargo_embargo.json
  7. CHANGELOG.md
  8. COPYRIGHT
  9. LICENSE-APACHE
  10. LICENSE-MIT
  11. METADATA
  12. MODULE_LICENSE_APACHE2
  13. OWNERS
  14. README.md
  15. TEST_MAPPING
README.md

rand_chacha

Test Status Latest version Book API API Minimum rustc version

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

Crate Features

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.

License

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.