19 releases (10 stable)

1.0.9 Sep 7, 2020
1.0.8 Mar 9, 2020
1.0.1 Feb 10, 2020
0.2.6 Feb 10, 2020
0.1.0 Jan 31, 2020

#145 in Algorithms

Download history 19/week @ 2021-06-09 4/week @ 2021-06-30 19/week @ 2021-07-14 1/week @ 2021-07-21 38/week @ 2021-07-28 19/week @ 2021-08-04 19/week @ 2021-08-11 10/week @ 2021-09-08

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MIT/Apache

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extendhash

crates.io docs.rs

extendhash is a Rust library to compute hashes and hash extensions.

Supported hash algorithms:

  • MD5
  • SHA-0
  • SHA-1
  • SHA-256
  • SHA-512

It supports #![no_std]. All hash algorithms and hash extensions are implemented in constant functions (using const fn) and can therefore be used in constant values.

Usage

use extendhash::sha256;

let secret_data = "This is a secret!".as_bytes();
let hash = sha256::compute_hash(secret_data);
let data_length = secret_data.len();

// Now we try computing a hash extension,
// assuming that `secret_data` is not available.
// We only need `hash` and `data_length`.
let appended_message = "Appended message.".as_bytes();
let combined_hash = sha256::extend_hash(
	hash, data_length, appended_message);

// Now we verify that `combined_hash` matches the
// concatenation (note the intermediate padding):
let mut combined_data = Vec::<u8>::new();
combined_data.extend_from_slice(secret_data);
let padding = sha256::padding_for_length(data_length);
combined_data.extend_from_slice(padding.as_slice());
combined_data.extend_from_slice(appended_message);
assert_eq!(
	combined_hash,
	sha256::compute_hash(combined_data.as_slice()));

License

Licensed under either of

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

No runtime deps