Perl

Sign XML (XAdES) using AWS CloudHSM

See more PKCS11 Examples

Demonstrates how to sign XML using AWS CloudHSM. The signing of the hash happens on a hardware token in AWS CloudHSM. Everything else involving the updating the XML to add the signature happens locally within Chilkat.

Note: This example requires Chilkat v9.5.0.96 or later.

Perl

use chilkat();

$success = 0;

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

# Note: Chilkat's PKCS11 implementation runs on Windows, Linux, Mac OS X, and other supported operating systems.

$pkcs11 = chilkat::CkPkcs11->new();

# Provide the path to the AWS CloudHSM PKCS11 driver.
# This example runs on Windows, so we'll provide the CloudHSM DLL.
# If your code runs on Linux, the CloudHSM driver might be at /opt/cloudhsm/lib/libcloudhsm_pkcs11.so
$pkcs11->put_SharedLibPath("C:\\Program Files\\Amazon\\CloudHSM\\lib\\cloudhsm_pkcs11.dll");

# Your PIN should be a string containing your crypto user's login and password, with a colon char delimiting.
# See https://docs.aws.amazon.com/cloudhsm/latest/userguide/pkcs11-pin.html
$pin = "user:password";
$userType = 1;

$success = $pkcs11->QuickSession($userType,$pin);
if ($success == 0) {
    print $pkcs11->lastErrorText() . "\r\n";
    exit;
}

$cert = chilkat::CkCert->new();
$success = $cert->LoadFromFile("qa_data/certs/myCert.cer");
if ($success == 0) {
    print $cert->lastErrorText() . "\r\n";
    exit;
}

# Tell the certificate to link with the PKCS11 session.
# The cert's private key should be installed on the CloudHSM.
# If there are multiple private keys on the CloudHSM, then Chilkat will automatically
# locate and use the private key corresponding to the certificate.
$success = $cert->LinkPkcs11($pkcs11);
if ($success == 0) {
    print $cert->lastErrorText() . "\r\n";
    exit;
}

# --------------------------------------------------------------------------
# At this point, we have the cert to be used for signing.
# Our XML signing code is the same as for a cert obtained from any other source..

# First generate the following XML to be signed:
# Use this online tool to generate code from sample XML: 
# Generate Code to Create XML

# <?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>

$xml = chilkat::CkXml->new();
$xml->put_Tag("SOAP-ENV:Envelope");
$xml->AddAttribute("xmlns:SOAP-ENV","http://schemas.xmlsoap.org/soap/envelope/");
$xml->UpdateAttrAt("SOAP-ENV:Header|wsse:Security",1,"xmlns:wsse","http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd");
$xml->UpdateAttrAt("SOAP-ENV:Header|wsse:Security",1,"SOAP-ENV:mustUnderstand","1");
$xml->UpdateAttrAt("SOAP-ENV:Body",1,"xmlns:SOAP-SEC","http://schemas.xmlsoap.org/soap/security/2000-12");
$xml->UpdateAttrAt("SOAP-ENV:Body",1,"SOAP-SEC:id","Body");
$xml->UpdateAttrAt("SOAP-ENV:Body|z:FooBar",1,"xmlns:z","http://example.com");

$gen = chilkat::CkXmlDSigGen->new();

# Indicate where the Signature will be inserted.
$gen->put_SigLocation("SOAP-ENV:Envelope|SOAP-ENV:Header|wsse:Security");

# Add a reference to the fragment of the XML to be signed.

# Note: "Body" refers to the XML element having an "id" equal to "Body", where "id" is case insensitive
# and where any namespace might qualify the attribute.  In this case, the SOAP-ENV:Body fragment is signed
# NOT because the tag = "Body", but because it has SOAP-SEC:id="Body"
$gen->AddSameDocRef("Body","sha1","EXCL_C14N","","");

# (You can read about the SignedInfoPrefixList in the online reference documentation.  It's optional..)
$gen->put_SignedInfoPrefixList("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->put_KeyInfoType("X509Data");
$gen->put_X509Type("Certificate");

$bUsePrivateKey = 1;
$success = $gen->SetX509Cert($cert,$bUsePrivateKey);
if ($success != 1) {
    print $gen->lastErrorText() . "\r\n";
    $success = $pkcs11->CloseSession();
    exit;
}

# Everything's specified.  Now create and insert the Signature
$sbXml = chilkat::CkStringBuilder->new();
$xml->put_EmitCompact(1);
$xml->GetXmlSb($sbXml);

$success = $gen->CreateXmlDSigSb($sbXml);
if ($success != 1) {
    print $gen->lastErrorText() . "\r\n";
    $success = $pkcs11->CloseSession();
    exit;
}

# Examine the XML with the digital signature inserted
print $sbXml->getAsString() . "\r\n";

# --------------------------------------------------------------------------

# Revert to an unauthenticated session by calling Logout.
$success = $pkcs11->Logout();
if ($success == 0) {
    print $pkcs11->lastErrorText() . "\r\n";
    $success = $pkcs11->CloseSession();
    exit;
}

# When finished, close the session.
# It is important to close the session (memory leaks will occur if the session is not properly closed).
$success = $pkcs11->CloseSession();
if ($success == 0) {
    print $pkcs11->lastErrorText() . "\r\n";
    exit;
}

print "Success." . "\r\n";

# --------------------------------------------------------------------------------
# Also see Chilkat's Online WSDL Code Generator
# to generate code and SOAP Request and Response XML for each operation in a WSDL.
# --------------------------------------------------------------------------------