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-rw-r--r--rand/rand_chacha/README.md12
1 files changed, 8 insertions, 4 deletions
diff --git a/rand/rand_chacha/README.md b/rand/rand_chacha/README.md
index 5a1dbac..69a0ce7 100644
--- a/rand/rand_chacha/README.md
+++ b/rand/rand_chacha/README.md
@@ -6,7 +6,7 @@
[![Book](https://img.shields.io/badge/book-master-yellow.svg)](https://rust-random.github.io/book/)
[![API](https://img.shields.io/badge/api-master-yellow.svg)](https://rust-random.github.io/rand/rand_chacha)
[![API](https://docs.rs/rand_chacha/badge.svg)](https://docs.rs/rand_chacha)
-[![Minimum rustc version](https://img.shields.io/badge/rustc-1.22+-lightgray.svg)](https://github.com/rust-random/rand#rust-version-requirements)
+[![Minimum rustc version](https://img.shields.io/badge/rustc-1.32+-lightgray.svg)](https://github.com/rust-random/rand#rust-version-requirements)
A cryptographically secure random number generator that uses the ChaCha
algorithm.
@@ -16,11 +16,14 @@ 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`](https://crates.io/crates/c2-chacha) crate.
+
Links:
- [API documentation (master)](https://rust-random.github.io/rand/rand_chacha)
- [API documentation (docs.rs)](https://docs.rs/rand_chacha)
-- [Changelog](CHANGELOG.md)
+- [Changelog](https://github.com/rust-random/rand/blob/master/rand_chacha/CHANGELOG.md)
[rand]: https://crates.io/crates/rand
[^1]: D. J. Bernstein, [*ChaCha, a variant of Salsa20*](
@@ -32,8 +35,9 @@ Links:
## Crate Features
-`rand_chacha` is `no_std` compatible. It does not require any functionality
-outside of the `core` lib, thus there are no features to configure.
+`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