sigsum

sigsum-rs is a Rust implementation of the Sigsum library. It currently only supports offline verification of sigsum signatures but aims to eventually include submitting and monitoring.

Installation

Add sigsum to your Rust project with cargo.

cargo add sigsum

Usage

use sigsum::{verify, Hash, PublicKey, SigsumSignature};
use hex_literal::hex;

let data = b"Hello, Sigsum!\n";
let signers: Vec<PublicKey> =
    vec![hex!("99ed58583e8750b20548e69df4a4e1a592379a9a66c51cd32e42fbe4e1bde78a").into()];
let signature = SigsumSignature::from_ascii("version=2
log=1643169b32bef33a3f54f8a353b87c475d19b6223cbb106390d10a29978e1cba
leaf=2c8d843ed6237e9ea033207113329fdd1428c75f8fd3c6782ae46c92c7a00c40 38dd0b42cab5166611a4f8346db1c6ffe81ee2345f3ffe36a466eb8fce1d4b2879fbb5f26291d25e610b2dc7f30eaa603efd97739ae585657d0f7181726eec00

size=381382
root_hash=901fefc6f1d978d2c2bedb82d448755bcdc7e8626e67ac7ee80873771be9b667
signature=8a8bf1fca60d1344fb6e2106e8f8906af833d3d75a21fe8d3af72be459f7a11f2ae6606ec6344a13b851cd454b3d281a2b1ae47732f7a8d6afbcc0134d1a2d00
cosignature=1c997261f16e6e81d13f420900a2542a4b6a049c2d996324ee5d82a90ca3360c 1770193051 a1ee1182b265204499cbef3ae59f3ea228b928b3cbda8817a4ed5a12776823e9ad8ef1ce986b9b98d9954f1798ec4315c1820704600a231c69038ccc9726d202
cosignature=49c4cd6124b7c572f3354d854d50b2a4b057a750f786cf03103c09de339c4ea3 1770193051 aaf642e81a54399777180f238573d74878b68c7b645d8011583621405bb450b4e7887fc76502a8142c493d64e3ed3e556d82dad1706411082e58805f64fa9d02
cosignature=70b861a010f25030de6ff6a5267e0b951e70c04b20ba4a3ce41e7fba7b9b7dfc 1770193051 f5953f406f5fd97d9c9d1328b00b07bf434a5eb76d8da359aeda98c414de29ca1ced1872971ea0f137508a7bb05c7d322548409425677af96433706319bc0801
cosignature=86b5414ae57f45c2953a074640bb5bedebad023925d4dc91a31de1350b710089 1770193051 3434b4646904714f4983c8e7e976a45332711f10012b19fbeb5549b6c0c04fb4ed52feed2da829354623c52b22b90093776034a8d57d660f9ff27a118f5bf801
cosignature=c1d2d6935c2fb43bef395792b1f3c1dfe4072d4c6cadd05e0cc90b28d7141ed3 1770193051 f0dce1bcdda3a2826479d62e6afedbe9ec06e8f990ae59d8cefa84d9a6ee68c12c2820fb00e1dbdc30044b16c7695a9d1047cec4788dc757f698d34ebaec4305
cosignature=d960fcff859a34d677343e4789c6843e897c9ff195ea7140a6ef382566df3b65 1770193051 b44c41f75566850003f7f655a6dc7bb38bb980e8e2c383871e29883805d3adec7782a08388b9386d9718380a4bb6900043e2b46080cff0fa75a500c36ef9df0a
cosignature=e4a6a1e4657d8d7a187cc0c20ed51055d88c72f340d29534939aee32d86b4021 1770193051 70697b4a6b07e79e49d0a8e41fd7450a593ee9df11da6244cebe4b0c15c8e52f28ad3931b95a806fc7f16b4ad90197971ddc087434c7985b8b3a0223c9fa3603
cosignature=42351ad474b29c04187fd0c8c7670656386f323f02e9a4ef0a0055ec061ecac8 1770193051 6610e5cf4ead2062d9783fbc19d2bae65eded35335495ad0cf0386277ed2d51854ced64efa21a6db0a398fdfb6761aa7d5659e54950a060d167fbdcb7b5ece05

leaf_index=381381
node_hash=d009c5dbeaaa5be1788ea9533f6f398747755a8245012165ac73f753b7917672
node_hash=fb515551fe18f6e53d7d7f49b80abbb5c702b9662ee74fc7730e4a7685000aa4
node_hash=e21e73ee8caf0d49cdcd2f334b3f64e85e4a151daf8d09b6034306bb21b88480
node_hash=f77bc4db00e509149b6e2fc0028d7107dd415929dc9972f32fe758ce39bcc9a0
node_hash=3acb38f01c633d917b899ed4e522a49a02bf20d358f98ca530e3a3065591e7f2
node_hash=889de80c543a5ae8e35430988dc120ac7edde74b776f9082f814ea88190a601f
node_hash=199f812b9f3667dec31f964098e32652477a2f3d458019b6f8f4acc645cf0131
node_hash=084580f8f6324d4ae42dbcb779502ab9fab77e0c2b92519fe089be72e38d60ed
node_hash=9ddbece4939d621df53f31e2729d5fa7802fd82f3edfb784483d8b7fa9cf41e2
node_hash=e1c7a90c09949c263807e5970aef47f9a06164b759995ab814aff94aff9dcd00
")?;

verify(&Hash::new(data), signature, signers, &sigsum::policy::SIGSUM_TEST_2025_3)?;

Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.

Please make sure to update tests as appropriate.

License: MIT