Rust

FatturaPA XML Invoice Sign+Encrypt to P7M

See more Digital Signatures Examples

Demonstrates how to create a CAdES BES signed + encrypted invoice.xml.p7m for the Italian FatturaPA exchange system. Rust

// This requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

let crypt = chilkat::Crypt2::new();

// Use a digital certificate and private key from a PFX file (.pfx or .p12).
let pfx_path = "qa_data/pfx/cert_test123.pfx".to_string();
let pfx_password = "test123".to_string();

let cert = chilkat::Cert::new();
if cert.load_pfx_file(&pfx_path, &pfx_password).is_err() {
    println!("{}", cert.last_error_text());
    return;
}

// Provide the signing cert (with associated private key).
if crypt.set_signing_cert(&cert).is_err() {
    println!("{}", crypt.last_error_text());
    return;
}

// Indicate that SHA-256 should be used.
crypt.set_hash_algorithm("sha256");

// Specify the signed attributes to be included.
// (This is what makes it CAdES-BES compliant.)
let json_signed_attrs = chilkat::JsonObject::new();
let _ = json_signed_attrs.update_int("contentType", 1);
let _ = json_signed_attrs.update_int("signingTime", 1);
let _ = json_signed_attrs.update_int("messageDigest", 1);
let _ = json_signed_attrs.update_int("signingCertificateV2", 1);
crypt.set_signing_attributes(&json_signed_attrs.emit().unwrap_or_default());

let in_file = "qa_data/xml/IT01234567890_11002.xml".to_string();
let sig_file = "qa_data/fatturapa/signed.p7m".to_string();

// Create the CAdES-BES signature, which contains the original data.
if crypt.create_p7_m(&in_file, &sig_file).is_err() {
    println!("{}", crypt.last_error_text());
    return;
}

// Now we'll encrypt what was signed using FatturaPA's certificate (from a PEM file)
let encrypt_cert = chilkat::Cert::new();
if encrypt_cert.load_from_file("qa_data/certs/fatturapa_cert.pem").is_err() {
    println!("{}", encrypt_cert.last_error_text());
    return;
}

crypt.set_crypt_algorithm("pki");

if crypt.set_encrypt_cert(&encrypt_cert).is_err() {
    println!("{}", crypt.last_error_text());
    return;
}

// Indicate the underlying bulk encryption algorithm to be used:
crypt.set_pkcs7_crypt_alg("aes");
crypt.set_key_length(128);

// There's one last option that could be set.  If is the RSA encryption encryption/padding scheme. 
// By default, RSAES_PKCS1-V1_5 is used.  If desired, the OaepPadding property could be set to true to
// use RSAES_OAEP.  (We'll leave it set at the default value of false)
crypt.set_oaep_padding(false);

// Everything is specified.  Encrypt the .p7m to create a new .p7m (which adds a layer of encryption around the opaque signature).
// The output is PKCS7 in binary DER format.
if crypt.ck_encrypt_file(&sig_file, "qa_output/signed_and_encrypted.p7m").is_err() {
    println!("{}", crypt.last_error_text());
    return;
}

println!("Success.");