Rust Requires Chilkat v11.0.0+

Create XML Signature using Java KeyStore (.jks)

See more XML Digital Signatures Examples

Demonstrates how to create an XML digital signature using a certificate and private key from a Java KeyStore (.jks) Rust

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

// The SOAP XML to be signed in this example contains the following:

// <?xml version="1.0" encoding="UTF-8" standalone="no" ?>
// <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
//     <SOAP-ENV:Header>
//         <wsse:Security xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd" SOAP-ENV:mustUnderstand="1"></wsse:Security>
//     </SOAP-ENV:Header>
//     <SOAP-ENV:Body xmlns:SOAP-SEC="http://schemas.xmlsoap.org/soap/security/2000-12" SOAP-SEC:id="Body">
//         <z:FooBar xmlns:z="http://example.com" />
//     </SOAP-ENV:Body>
// </SOAP-ENV:Envelope>
// 

// Build the XML to sign.
// Use this online tool to generate the code from sample XML: 
// Generate Code to Create XML

let xml = chilkat::Xml::new();
xml.set_tag("SOAP-ENV:Envelope");
let _ = xml.add_attribute("xmlns:SOAP-ENV", "http://schemas.xmlsoap.org/soap/envelope/");
let _ = xml.update_attr_at("SOAP-ENV:Header|wsse:Security", true, "xmlns:wsse", "http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd");
let _ = xml.update_attr_at("SOAP-ENV:Header|wsse:Security", true, "SOAP-ENV:mustUnderstand", "1");
let _ = xml.update_attr_at("SOAP-ENV:Body", true, "xmlns:SOAP-SEC", "http://schemas.xmlsoap.org/soap/security/2000-12");
let _ = xml.update_attr_at("SOAP-ENV:Body", true, "SOAP-SEC:id", "Body");
let _ = xml.update_attr_at("SOAP-ENV:Body|z:FooBar", true, "xmlns:z", "http://example.com");

// Load a JavaKeyStore file containing the certificate + private key.
let jks = chilkat::JavaKeyStore::new();
let password = "secret".to_string();
if jks.load_file(&password, "qa_data/jks/test_secret.jks").is_err() {
    println!("{}", jks.last_error_text());
    return;
}

// Make sure we have a private key.
if jks.num_private_keys() < 1 {
    println!("No private key available.");
    return;
}

// -------------------------------------------------------------------------
// Get the certificate chain associated with the 1st (and probably only) private key in the JKS.

let chain = chilkat::CertChain::new();
if jks.cert_chain_at(0, &chain).is_err() {
    println!("{}", jks.last_error_text());
    return;
}

let cert = chilkat::Cert::new();
if chain.cert_at(0, &cert).is_err() {
    println!("{}", chain.last_error_text());
    return;
}

// Verify again that this cert has a private key.
if !cert.has_private_key() {
    println!("Certificate has no associated private key.");
    return;
}

// Prepare for signing...
// Use this online tool to generate the following code from an already-signed XML sample: 
// Generate Code to Create an XML Signature
let gen_ = chilkat::XmlDSigGen::new();

// Indicate where the Signature will be inserted.
gen_.set_sig_location("SOAP-ENV:Envelope|SOAP-ENV:Header|wsse:Security");

// Add a reference to the fragment of the XML to be signed.
let _ = gen_.add_same_doc_ref("Body", "sha1", "EXCL_C14N", "", "");

// (You can read about the SignedInfoPrefixList in the online reference documentation.  It's optional..)
gen_.set_signed_info_prefix_list("wsse SOAP-ENV");

// Provide the private key for signing via the certificate, and indicate that
// we want the base64 of the certificate embedded in the KeyInfo.
gen_.set_key_info_type("X509Data");
gen_.set_x509_type("Certificate");

// Note: Because our certificate was loaded from a JKS which also contained the private key,
// Chilkat automatically knows and has the private key associated with the certificate.
// We set bUsePrivateKey to tell the SetX509Cert method to automatically use the private key
// associated with the certificate for signing.
let b_use_private_key = true;
if gen_.set_x509_cert(&cert, b_use_private_key).is_err() {
    println!("{}", gen_.last_error_text());
    return;
}

// Everything's specified.  Now create and insert the Signature
let sb_xml = chilkat::StringBuilder::new();
let _ = xml.get_xml_sb(&sb_xml);
if gen_.create_xml_d_sig_sb(&sb_xml).is_err() {
    println!("{}", gen_.last_error_text());
    return;
}

// Examine the XML with the digital signature inserted
println!("{}", sb_xml.get_as_string().unwrap_or_default());