#http #signatures #digest


An HTTP Signatures library that leaves the signing to you

13 releases

Uses new Rust 2021

0.6.0 Jan 17, 2022
0.5.4 Sep 18, 2021
0.5.3 Sep 30, 2020
0.5.2 Jul 24, 2020
0.1.0 Sep 21, 2019

#626 in Cryptography

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Used in 22 crates (3 directly)

Custom license

708 lines

HTTP Signature Normaliztion

An HTTP Signatures library that leaves the signing to you

Http Signature Normalization is a minimal-dependency crate for producing HTTP Signatures with user-provided signing and verification. The API is simple; there's a series of steps for creation and verification with types that ensure reasonable usage.

use chrono::Duration;
use http_signature_normalization::Config;

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let config = Config {
        expires_after: Duation::secs(5),

    let headers = BTreeMap::new();

    let signature_header_value = config
        .begin_sign("GET", "/foo?bar=baz", headers)
        .sign("my-key-id".to_owned(), |signing_string| {
            // sign the string here
            Ok(signing_string.to_owned()) as Result<_, Box<dyn std::error::Error>>

    let mut headers = BTreeMap::new();
    headers.insert("Signature".to_owned(), signature_header_value);

    let verified = config
        .begin_verify("GET", "/foo?bar=baz", headers)?
        .verify(|sig, signing_string| {
            // Verify the signature here
            sig == signing_string



Unless otherwise stated, all contributions to this project will be licensed under the CSL with the exceptions listed in the License section of this file.


This work is licensed under the Cooperative Software License. This is not a Free Software License, but may be considered a "source-available License." For most hobbyists, self-employed developers, worker-owned companies, and cooperatives, this software can be used in most projects so long as this software is distributed under the terms of the CSL. For more information, see the provided LICENSE file. If none exists, the license can be found online here. If you are a free software project and wish to use this software under the terms of the GNU Affero General Public License, please contact me at asonix@asonix.dog and we can sort that out. If you wish to use this project under any other license, especially in proprietary software, the answer is likely no.

Http Signature Normalization is currently licensed under the AGPL to the Lemmy project, found at github.com/LemmyNet/lemmy