Migrate 25 crates to monorepo. am: 2095bf1f5f am: 3c78343c47

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/rand_chacha/+/3248528

Change-Id: Ibaecc389d51ced0692a53cdd8371281c58e7018e
Signed-off-by: Automerger Merge Worker <[email protected]>
tree: 233a0ec433e827ad7ab97f66bf48f815295bd0b2
  1. src/
  2. .cargo_vcs_info.json
  3. Android.bp
  4. Cargo.toml
  5. Cargo.toml.orig
  6. CHANGELOG.md
  7. COPYRIGHT
  8. LICENSE-APACHE
  9. LICENSE-MIT
  10. METADATA
  11. MODULE_LICENSE_APACHE2
  12. OWNERS
  13. README.md
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.