Crate c2pa

Expand description

This library supports reading, creating and embedding C2PA data with JPEG and PNG images.

Example: Reading a ManifestStore

use c2pa::{assertions::Actions, ManifestStore};

let manifest_store = ManifestStore::from_file("tests/fixtures/C.jpg")?;
println!("{}", manifest_store);

if let Some(manifest) = manifest_store.get_active() {
    let actions: Actions = manifest.find_assertion(Actions::LABEL)?;
    for action in actions.actions {
        println!("{}\n", action.action());
    }
}

Example: Adding a Manifest to a file

use c2pa::{
    assertions::User,
    get_signer_from_files,
    Manifest
};

use std::path::PathBuf;
use tempfile::tempdir;

let mut manifest = Manifest::new("my_app".to_owned());
manifest.add_assertion(&User::new("org.contentauth.mylabel", r#"{"my_tag":"Anything I want"}"#))?;

let source = PathBuf::from("tests/fixtures/C.jpg");
let dir = tempdir()?;
let dest = dir.path().join("test_file.jpg");

// Create a ps256 signer using certs and key files
let signcert_path = "tests/fixtures/certs/ps256.pub";
let pkey_path = "tests/fixtures/certs/ps256.pem";
let signer = get_signer_from_files(signcert_path, pkey_path, "ps256", None)?;

// embed a manifest using the signer
manifest.embed(&source, &dest, &*signer)?;