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

VB.NET UWP/WinRT Examples

Web API Categories

ASN.1
Amazon EC2
Amazon Glacier
Amazon S3
Amazon S3 (new)
Amazon SES
Amazon SNS
Amazon SQS
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

 

 

 

(VB.NET UWP/WinRT) Create XML Digital Signature having KeyName

Demonstrates how to create an XML digital signature where the KeyInfo part will contain the KeyName element.
In this case, the public key is not specifically stored in the signed XML.
Rather, application specific information about the key is stored in the KeyName element.
The verifying application would use the KeyName to find and use the matching public key.

This example requires Chilkat v9.5.0.69 or greater.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads

Chilkat for the Universal Windows Platform (UWP)

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

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

' <?xml version="1.0" encoding="UTF-8" standalone="no"?>
' <Envelope>
'   <Header>
'     <Security>
'     </Security>
'   </Header>
'   <Body Id="abc">
'     <z:FooBar xmlns:z="https://www.example-code.com"/>
'   </Body>
' </Envelope>


' The above XML is available at https://www.chilkatsoft.com/exampleData/xmlToSign.xml
' Fetch the XML and then sign it..

Dim url As String = "https://www.chilkatsoft.com/exampleData/xmlToSign.xml"
Dim http As New Chilkat.Http
Dim sbXml As New Chilkat.StringBuilder
Dim success As Boolean = Await http.QuickGetSbAsync(url,sbXml)
If (success <> True) Then
    Debug.WriteLine(http.LastErrorText)
    Exit Sub
End If


' This example uses a DSA private key for signing.  
' There are many ways of getting an DSA private key using Chilkat.  This example
' will load it from an encrypted PEM file.

' In case you would like to use it, I put the DSA private key PEM file here:
' https://www.chilkatsoft.com/exampleData/dsa1024_secret.zip
' The password is "secret".
Dim dsaKey As New Chilkat.PrivateKey
success = dsaKey.LoadEncryptedPemFile("qa_data/dsa/dsa1024_secret.pem","secret")
If (success <> True) Then
    Debug.WriteLine(dsaKey.LastErrorText)
    Exit Sub
End If


Dim xmlSigGen As New Chilkat.XmlDSigGen

' Indicate where the XML Signature is to be inserted.
xmlSigGen.SigLocation = "Envelope|Header|Security"

' Specify the fragment of the XML document to be signed.
' This example will sign the fragment from <Body Id="abc"> ... </Body>
xmlSigGen.AddSameDocRef("abc","sha256","EXCL_C14N","","")

' Provide the DSA key to be used for signing:
xmlSigGen.SetPrivateKey(dsaKey)

' Specify what we want to emit in the KeyInfo part of the Signature.
' By default, it is the KeyValue that is emitted to the KeyInfo.
' In this example,we want to emit a key name rather than the actual public key value.
xmlSigGen.KeyInfoType = "KeyName"

' Provide a key name.  The verifying application will use the key name
' to find/load the public key to be used for verifying the signature.
' The key name is an arbitrary pre-agreed upon name that signer and verifier both know in advance.
xmlSigGen.KeyInfoKeyName = "dsaKey_123"

' The KeyInfo part of the XML signature to be created will contain this:
' 
'     <ds:KeyInfo><ds:KeyName>dsaKey_123</ds:KeyName></ds:KeyInfo>
' 


' OK, everything's specified, so let's create the XML digital signature:
' This in-place signs the XML.  If successful, sbXml will contain the 
' XML with the digital signature at the specified location.
xmlSigGen.Behaviors = "IndentedSignature"
success = xmlSigGen.CreateXmlDSigSb(sbXml)
If (success <> True) Then
    Debug.WriteLine(xmlSigGen.LastErrorText)
    Exit Sub
End If


' Examine the signed XML:
Debug.WriteLine(sbXml.GetAsString())

sbXml.WriteFile("c:/chilkatsoft.com/exampleData/signedUsingKeyName.xml","utf-8",False)

' Below is the signed XML that is produced.
' 
' <?xml version="1.0" encoding="UTF-8" standalone="no"?>
' <Envelope>
'   <Header>
'     <Security>
'     <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/2009/xmldsig11#dsa-sha256"/>
'     <ds:Reference URI="#abc">
'       <ds:Transforms>
'         <ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
'       </ds:Transforms>
'       <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/>
'       <ds:DigestValue>XTjDIHSEsDNTO9yn4cKtyXjRUjPFXkOQOLYI5mueZhk=</ds:DigestValue>
'     </ds:Reference>
'   </ds:SignedInfo>
'   <ds:SignatureValue>F+HopRvLoj+9SHZxI/cGfX9SDfh+HRGZLMievGX3y/cckX1UzFuXCA==</ds:SignatureValue>
'   <ds:KeyInfo>
'     <ds:KeyName>dsaKey_123</ds:KeyName>
'   </ds:KeyInfo>
' </ds:Signature></Security>
'   </Header>
'   <Body Id="abc">
'     <z:FooBar xmlns:z="https://www.example-code.com"/>
'   </Body>
' </Envelope>
' 

 

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