Chilkat Examples

ChilkatHOMEAndroid™Classic ASPCC++C#Mono C#.NET Core C#C# UWP/WinRTDataFlexDelphi ActiveXDelphi DLLVisual FoxProJavaLianjaMFCObjective-CPerlPHP ActiveXPHP ExtensionPowerBuilderPowerShellPureBasicCkPythonChilkat2-PythonRubySQL ServerSwift 2Swift 3,4,5...TclUnicode CUnicode C++Visual Basic 6.0VB.NETVB.NET UWP/WinRTVBScriptXojo PluginNode.jsExcelGo

MFC Examples

Web API Categories

ASN.1
Amazon EC2
Amazon Glacier
Amazon S3
Amazon S3 (new)
Amazon SES
Amazon SNS
Amazon SQS
Async
Azure Cloud Storage
Azure Service Bus
Azure Table Service
Base64
Bounced Email
Box
CAdES
CSR
CSV
Certificates
Compression
DKIM / DomainKey
DSA
Diffie-Hellman
Digital Signatures
Dropbox
Dynamics CRM
EBICS
ECC
Ed25519
Email Object
Encryption
FTP
FileAccess
Firebase
GMail REST API
GMail SMTP/IMAP/POP
Geolocation
Google APIs
Google Calendar
Google Cloud SQL
Google Cloud Storage
Google Drive
Google Photos
Google Sheets
Google Tasks
Gzip
HTML-to-XML/Text
HTTP

HTTP Misc
IMAP
JSON
JSON Web Encryption (JWE)
JSON Web Signatures (JWS)
JSON Web Token (JWT)
Java KeyStore (JKS)
MHT / HTML Email
MIME
MS Storage Providers
Microsoft Graph
NTLM
OAuth1
OAuth2
OIDC
Office365
OneDrive
OpenSSL
Outlook
Outlook Calendar
Outlook Contact
PDF Signatures
PEM
PFX/P12
PKCS11
POP3
PRNG
REST
REST Misc
RSA
SCP
SCard
SFTP
SMTP
SSH
SSH Key
SSH Tunnel
ScMinidriver
SharePoint
Socket/SSL/TLS
Spider
Stream
Tar Archive
Upload
WebSocket
XAdES
XML
XML Digital Signatures
XMP
Zip
curl

 

 

 

(MFC) Create Enveloping XML Digital Signature

This example creates an enveloping digital signature.
An enveloping signature is where the signed data is contained within the Signature within an Object element.
This example signs non-XML text data where the XML signature constitutes the entire output.

Chilkat C/C++ Library Downloads

MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

#include <CkHttp.h>
#include <CkBinData.h>
#include <CkZip.h>
#include <CkZipEntry.h>
#include <CkPrivateKey.h>
#include <CkXmlDSigGen.h>
#include <CkStringBuilder.h>

void ChilkatSample(void)
    {
    CkString strOut;

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

    // Let's use the ECDSA private key at https://www.chilkatsoft.com/exampleData/secp256r1-key.zip
    // for signing.
    CkHttp http;
    CkBinData zipFile;
    const char *keyUrl = "https://www.chilkatsoft.com/exampleData/secp256r1-key.zip";

    bool success = http.QuickGetBd(keyUrl,zipFile);
    if (success != true) {
        strOut.append(http.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    CkZip zip;
    success = zip.OpenBd(zipFile);
    CkZipEntry *zipEntry = zip.FirstMatchingEntry("*.pem");
    CkPrivateKey ecKey;
    success = ecKey.LoadPem(zipEntry->unzipToString(0,"utf-8"));
    if (success != true) {
        strOut.append(ecKey.lastErrorText());
        strOut.append("\r\n");
        delete zipEntry;
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    delete zipEntry;

    // ----------------------------------------------------------------------------
    CkXmlDSigGen gen;

    // Provide the ECDSA key to the XML Digital Signature generator
    gen.SetPrivateKey(ecKey);

    // Add an enveloped reference to the content to be signed.
    CkStringBuilder sbContent;
    sbContent.Append("This is the content that is signed.");
    gen.AddEnvelopedRef("abc123",sbContent,"sha256","C14N","");

    // Generate the XML digital signature.
    // Notice that in other examples, the sbXml passed to CreateXmlDSigSb
    // already contains XML, and the XML signature is inserted at the location
    // specified by the SigLocation property.  In this case, both SigLocation
    // and sbXml are empty.  The result is that sbXml will contain just the Signature.
    CkStringBuilder sbXml;
    success = gen.CreateXmlDSigSb(sbXml);
    if (success != true) {
        strOut.append(gen.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    // Examine the enveloped signature, where the data is contained within the XML Signature
    strOut.append(sbXml.getAsString());
    strOut.append("\r\n");

    // The Signature returned is compact and in a single line, like this:
    // <ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#"><ds:SignedInfo><ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/><ds:SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#ecdsa-sha256"/><ds:Reference URI="#abc123"><ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/><ds:DigestValue>tEVrbXXjeTXjF3tIojul4/sgeEGN49E1dxr/GMs8GNE=</ds:DigestValue></ds:Reference></ds:SignedInfo><ds:SignatureValue>/pILUshwrzgdGc4bPgp85TDfbUiM9pn8EIPNRVWKuoVEtPsv4XRthUrv9aDDvajmyl2okLwTakANgtaxO1ULMw==</ds:SignatureValue><ds:KeyInfo><ds:KeyValue><ds:ECKeyValue xmlns="http://www.w3.org/2009/xmldsig11#"><ds:NamedCurve URI="urn:oid:1.2.840.10045.3.1.7" /><ds:PublicKey>BOVKaiLPKEDChhkA64UEBOXTv/VFHnhrUPN+bXqCvEl7rroAYpH5tKzbiGTtMSlp4JO9Pxg44zeX7EoWDvOrpD0=</ds:PublicKey></ds:ECKeyValue></ds:KeyValue></ds:KeyInfo><ds:Object Id="abc123">This is the content that is signed.</ds:Object></ds:Signature>

    // XML pretty-printed, the signature is as follows, but pretty-printing introductes whitespace that breaks the signature..

    // <?xml version="1.0" encoding="utf-8" ?>
    // <ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
    //     <ds:SignedInfo>
    //         <ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#" />
    //         <ds:SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#ecdsa-sha256" />
    //         <ds:Reference URI="#abc123">
    //             <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256" />
    //             <ds:DigestValue>tEVrbXXjeTXjF3tIojul4/sgeEGN49E1dxr/GMs8GNE=</ds:DigestValue>
    //         </ds:Reference>
    //     </ds:SignedInfo>
    //     <ds:SignatureValue>/pILUshwrzgdGc4bPgp85TDfbUiM9pn8EIPNRVWKuoVEtPsv4XRthUrv9aDDvajmyl2okLwTakANgtaxO1ULMw==</ds:SignatureValue>
    //     <ds:KeyInfo>
    //         <ds:KeyValue>
    //             <ds:ECKeyValue xmlns="http://www.w3.org/2009/xmldsig11#">
    //                 <ds:NamedCurve URI="urn:oid:1.2.840.10045.3.1.7" />
    //                 <ds:PublicKey>BOVKaiLPKEDChhkA64UEBOXTv/VFHnhrUPN+bXqCvEl7rroAYpH5tKzbiGTtMSlp4JO9Pxg44zeX7EoWDvOrpD0=</ds:PublicKey>
    //             </ds:ECKeyValue>
    //         </ds:KeyValue>
    //     </ds:KeyInfo>
    //     <ds:Object Id="abc123">This is the content that is signed.</ds:Object>
    // </ds:Signature>
    // 


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }

 

© 2000-2022 Chilkat Software, Inc. All Rights Reserved.