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main.rs
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main.rs
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//
// Copyright 2021 The Sigstore Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
use clap::Parser;
use sigstore::cosign::bundle::SignedArtifactBundle;
use sigstore::cosign::client::Client;
use sigstore::cosign::CosignCapabilities;
use sigstore::crypto::{CosignVerificationKey, SigningScheme};
use std::fs;
use tracing_subscriber::prelude::*;
use tracing_subscriber::{fmt, EnvFilter};
#[derive(Parser, Debug)]
#[clap(author, version, about, long_about = None)]
struct Cli {
/// Path to bundle file
#[clap(short, long)]
bundle: String,
/// Path to artifact to be verified
blob: String,
/// File containing Rekor's public key (e.g.: ~/.sigstore/root/targets/rekor.pub)
#[clap(long, required(false))]
rekor_pub_key: String,
/// Enable verbose mode
#[clap(short, long)]
verbose: bool,
}
#[tokio::main]
pub async fn main() {
let cli = Cli::parse();
// setup logging
let level_filter = if cli.verbose { "debug" } else { "info" };
let filter_layer = EnvFilter::new(level_filter);
tracing_subscriber::registry()
.with(filter_layer)
.with(fmt::layer().with_writer(std::io::stderr))
.init();
let rekor_pub_pem =
fs::read_to_string(&cli.rekor_pub_key).expect("error reading rekor's public key");
let rekor_pub_key =
CosignVerificationKey::from_pem(rekor_pub_pem.as_bytes(), &SigningScheme::default())
.expect("Cannot create Rekor verification key");
let bundle_json = fs::read_to_string(&cli.bundle).expect("error reading bundle json file");
let blob = fs::read(cli.blob.as_str()).expect("error reading blob file");
let bundle = SignedArtifactBundle::new_verified(&bundle_json, &rekor_pub_key).unwrap();
match Client::verify_blob(&bundle.cert, &bundle.base64_signature, &blob) {
Ok(_) => println!("Verification succeeded"),
Err(e) => eprintln!("Verification failed: {}", e),
}
}