Crate features / chacha20
Feature flags · chacha20 0.10.2 · from crates.io 2026-10-24
chacha20 features: what each one does, and the line to copy
Short answerchacha20 0.10.2 has 3 features. By default it turns on cipher; add default-features = false to start from nothing. It needs Rust 1.85 or newer.
Pick features
Every feature
| Feature | In default | Turns on |
|---|---|---|
legacy | cipher | |
rng | dep:rand_core | |
xchacha | cipher |
dep:x turns on the optional dependency x; x/y turns on feature y of dependency x (with ?, only if x is already on).
MSRV history
The minimum Rust version chacha20 declares (rust-version), and the release that changed it:
- 0.9.0 (2022-02-21): Rust 1.56
- 0.8.2 (2022-07-07): no rust-version declared
- 0.9.1 (2023-04-01): Rust 1.56
- 0.10.0-pre.1 (2024-07-27): Rust 1.65
- 0.10.0-pre.3 (2025-01-28): Rust 1.81
- 0.10.0-rc.0 (2025-05-30): Rust 1.85
Stuck on an older compiler? Pin the last version that supports it, for example cargo update -p chacha20 --precise <version>, or use resolver 3, which picks compatible versions for you.
More on chacha20
Real downloads, dependents and alternatives: chacha20 crate data (1.7M real downloads a day, 260 dependents).
Security record: chacha20 advisories.
docs.rs feature list · crates.io · license MIT OR Apache-2.0 · edition 2024
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