Crates / Compare / sha2 vs blake2
Rust crates side by side · data Oct 24, 2026
sha2 vs blake2
Short answerBy steady daily use, sha2 is bigger: 3,510,276 real downloads a day against 502,276 for blake2 (7.0x). 22,608 crates depend on sha2 and 839 on blake2. sha2 last shipped 12 days ago, blake2 59 days ago.
sha2
FoundationalFoundational and steady.
22,608 crates depend on it; downloads jump on release days (1.4x the baseline).
Pure Rust implementation of the SHA-2 hash function family including SHA-224, SHA-256, SHA-384, and SHA-512.
blake2
EstablishedEstablished and steady.
839 crates depend on it; downloads don't spike on releases.
BLAKE2 hash functions
sha2blake2 · 100% = that crate's normal quiet day, so a spike to 300% is triple its usual traffic
Every number, side by side
| Same window, same method | sha2 | blake2 |
|---|---|---|
| Real downloads a day | 3,510,276 | 502,276 |
| Crates that depend on it | 22,608 | 839 |
| Last release | 0.11.1, 12 days ago | 0.11.0, 59 days ago |
| Trend vs the field | +5% | +6% |
| Release-window share | 3.0% | 2.2% |
| Downloads in the window | 325,922,224 | 47,448,454 |
| All-time downloads | 1,108,521,356 | 188,120,525 |
| Versions published | 51 | 35 |
| License | MIT OR Apache-2.0 | MIT OR Apache-2.0 |
| MSRV | 1.88 | 1.85 |
| First published | May 6, 2016 | Oct 6, 2016 |
Which to pick
- Downloads tell you what is common, not what fits. Each crate's own description above says what it is for; when the jobs differ, pick by the job.
- When both fit, prefer the one more crates depend on (sha2, 22,608 dependents): more eyes, more answered questions, and you may already have it in your tree.
- Check the release dates against your own pace: sha2 12 days ago, blake2 59 days ago.
Also in this space
Method
Real downloads = the median day with no release that day or the day before, from the crates.io API (Jul 27, 2026 to Oct 23, 2026). Raw crates.io counts include CI and bots and run high (why); the method is from our 90-day study.
Up next
Another comparison: Same method, same window. Foundational and steady vs widely used and steady.reqwest vs ureqRead it next →Also worth your time