orion-0.3.1 has been yanked.
orion

Warning: There are no guarantees for the security of these implementations. Use at your own risk.
Cryptographic functions implemented in Rust, with a simple API.
Currently contains:
- HMAC with SHA2(256, 384, 512).
- HKDF with the above HMAC options.
- PBKDF2 with the above HMAC options.
Usage
extern crate orion
use orion::{default, util};
// HMAC-SHA512
let key = util::gen_rand_key(64).unwrap();
let msg = "Some message".as_bytes();
let expected_hmac = default::hmac(&key, msg).unwrap();
default::hmac_verify(&expected_hmac, &key, &msg).unwrap();
// HKDF-HMAC-SHA512
let salt = util::gen_rand_key(64).unwrap();
let data = "Some data".as_bytes();
let info = "Some info".as_bytes();
let dk = default::hkdf(&salt, data, info, 64).unwrap();
default::hkdf_verify(&dk, &salt, data, info, 64).unwrap();
// PBKDF2-HMAC-SHA512
let salt = util::gen_rand_key(64).unwrap();
let dk = default::pbkdf2("Secret password".as_bytes(), &salt).unwrap();
default::pbkdf2_verify(&dk, "Secret password".as_bytes(), &salt).unwrap();
Documentation
To build the most recent: cargo doc --no-deps or view here.
Tests/Fuzzing
Unit tests are located in the same file as what is being tested, apart from implementation verification tests - these are in tests. To run all tests: cargo test.
Fuzzing is done using cargo-fuzz. Fuzzing targets are located in fuzz/fuzz_targets.
Performance
PBKDF2-HMAC-SHA256, iterations = 1: 0.000009282000974053517 seconds
PBKDF2-HMAC-SHA256, iterations = 10000: 0.017861276000985526 seconds
PBKDF2-HMAC-SHA256, iterations = 16777216: 28.345894931999283 seconds
HKDF-HMAC-SHA256: 0.00002259599932585843 seconds
HKDF-HMAC-SHA384: 0.00001884199991764035 seconds
HKDF-HMAC-SHA512: 0.000005493000571732409 seconds
HMAC-SHA256: 0.00000212700069823768 seconds
HMAC-SHA384: 0.0000023610009520780295 seconds
HMAC-SHA512: 0.0000024699984351173043 seconds
Tested on an Intel® Core™ i7-4790.
Acknowledgments
Thanks to @defuse for a quick audit of the code.
License
orion is licensed under the MIT license. See the LICENSE file for more information.