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rand_chacha

v0.10.0 Growing

ChaCha random number generator

MIT OR Apache-2.0 Edition 2024 MSRV 1.85
AlgorithmsNo standard library #random#rng#chacha

Quick Verdict

  • !Pre-1.0: API may have breaking changes
  • โœ“Massive adoption (23.3K crates depend on it)
  • โœ“Team maintained (2 owners)
  • โœ“Permissive license (MIT OR Apache-2.0)

Security

Checking security advisories...
Downloads
1.2B
Dependents
23.3K
Releases
16
Size
20KB

Deep Insights

๐Ÿ“Š
Stable downloads

85.1M downloads in the last 30 days (2.8M/day). Volume is roughly flat compared to the previous period.

๐Ÿ›๏ธ
Foundational crate

23.3K crates depend on rand_chacha โ€” it's part of the Rust ecosystem's core infrastructure. Removing it from your dependency tree would be extremely difficult.

๐Ÿ‘ฅ
Team maintained

This crate is maintained by a team (2 owners), reducing bus-factor risk and ensuring continuity.

๐Ÿ”ฌ
Pre-1.0 for over a year

Despite being 7+ years old, rand_chacha hasn't reached 1.0 yet. Expect potential API changes between versions.

๐Ÿ“
Compact crate

At 19KB, rand_chacha is lightweight. Small crate size correlates with focused, well-scoped functionality.

๐ŸŒŸ
Used by top crates

Notable dependents include rsa, num-bigint-dig, proptest, rav1e, merlin. When high-quality crates choose rand_chacha, it's a strong quality signal.

Health Breakdown

Maintenance 9/25

Recency, release consistency, active ratio

Quality 16/25

Yanked ratio, deps, size, maturity, features

Community 20/20

Reverse deps, ownership, ecosystem

Popularity 8/15

Downloads, momentum, growth trend

Documentation 15/15

Docs, repo, license, metadata

Download Trend

Daily downloads ยท last 90 days
2.6M/day avg-45%
01.0M2.0M3.0M4.0M4/265/146/16/197/77/24

Top Dependents

Version Adoption

v0.3.1
68%
v0.9.0
32%
v0.10.0
0%
v0.9.0-alpha.1
0%
v0.9.0-alpha.2
0%

Release Timeline

10 releasessince 2021
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2021
1
2022
2023
2024
5
2025
2
2026
2
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Feature Flags

default =["std"]

std*serde

README

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Maintainers

Dependencies
5
direct dependencies
Dependents
23.3K
crates depend on rand_chacha

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