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

Excel 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

 

 

 

(Excel) CoSign PKCS7/CMS Signed Data

See more Digital Signatures Examples

Demonstrates how to add a 2nd signature to a CMS SignedData. This is to add an additional signature, SignerInfo and certificate(s) to an existing CMS signed data.

In this example, we cosign an existing pdf.p7s

Note: The CoSign method is added in Chilkat v9.5.0.89.

Download Excel Class Modules

Chilkat Excel Class Modules

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

Dim crypt As Chilkat.Crypt2
Set crypt = Chilkat.NewCrypt2
Dim cert As Chilkat.Cert
Set cert = Chilkat.NewCert

' Load a certificate in some way, such as from a smart card.
' Chilkat provides other methods to load from a .pfx, .pem, or from the Windows certificate stores..

success = cert.LoadFromSmartcard("")
If (success = False) Then
    Debug.Print cert.LastErrorText
    Exit Sub
End If

' If we loaded from a smart card..
' Use your smart card user PIN for signing.
cert.SmartCardPin = "0000"

success = crypt.SetSigningCert(cert)
If (success = False) Then
    Debug.Print crypt.LastErrorText
    Exit Sub
End If

' Load the file to be co-signed.
' NOTE:  This is to cosign a PDF file contained within a CMS (PKCS7) message.
' (In other words, the PDF is contained within the CMS SignedData, rather than the other way around
' where a CMS signature is contained within a PDF.  Use Chilkat's PDF class to sign a PDF, which is
' to embed a CMS signature within the PDF.)
Dim bd As Chilkat.BinData
Set bd = Chilkat.NewBinData
success = bd.LoadFile("qa_data/p7s/cosign/sample.pdf.p7s")
If (success = False) Then
    Debug.Print "Failed to load pdf.p7s input file."
    Exit Sub
End If

' bd2 will contain the co-signed result.
Dim bd2 As Chilkat.BinData
Set bd2 = Chilkat.NewBinData
success = crypt.CoSign(bd,cert,bd2)
If (success = False) Then
    Debug.Print crypt.LastErrorText
    Exit Sub
End If

success = bd.WriteFile("qa_output/cosigned.pdf.p7s")
If (success = False) Then
    Debug.Print "Failed to save pdf.p7s output file."
    Exit Sub
End If

Debug.Print "Success!"

 

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