Chilkat Examples

ChilkatHOME.NET Core C#Android™AutoItCC#C++Chilkat2-PythonCkPythonClassic ASPDataFlexDelphi ActiveXDelphi DLLGoJavaLianjaMono C#Node.jsObjective-CPHP ActiveXPHP ExtensionPerlPowerBuilderPowerShellPureBasicRubySQL ServerSwift 2Swift 3,4,5...TclUnicode CUnicode C++VB.NETVBScriptVisual Basic 6.0Visual FoxProXojo Plugin

Tcl Examples

Web API Categories

ASN.1
AWS KMS
AWS Misc
Amazon EC2
Amazon Glacier
Amazon S3
Amazon S3 (new)
Amazon SES
Amazon SNS
Amazon SQS
Async
Azure Cloud Storage
Azure Key Vault
Azure Service Bus
Azure Table Service
Base64
Bounced Email
Box
CAdES
CSR
CSV
Certificates
Code Signing
Compression
DKIM / DomainKey
DNS
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
Misc
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
SharePoint Online
Signing in the Cloud
Socket/SSL/TLS
Spider
Stream
Tar Archive
ULID/UUID
Upload
WebSocket
XAdES
XML
XML Digital Signatures
XMP
Zip
curl

 

 

 

(Tcl) PDF Signature Appearance Text Substitution Keywords

See more PDF Signatures Examples

This example demonstrates the text substitution keywords that can be used in the PDF signature's appearance text.

Note: This example requires Chilkat v9.5.0.85 or greater.

Chilkat Tcl Extension Downloads

Chilkat Tcl Extension Downloads

load ./chilkat.dll

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

set pdf [new_CkPdf]

# Load a PDF to be signed.
set success [CkPdf_LoadFile $pdf "qa_data/pdf/empty.pdf"]
if {$success == 0} then {
    puts [CkPdf_lastErrorText $pdf]
    delete_CkPdf $pdf
    exit
}

# Options for signing are specified in JSON.
set json [new_CkJsonObject]

# In most cases, the signingCertificateV2 and signingTime attributes are required.
CkJsonObject_UpdateInt $json "signingCertificateV2" 1
CkJsonObject_UpdateInt $json "signingTime" 1

# Put the signature on page 1, top left
CkJsonObject_UpdateInt $json "page" 1
CkJsonObject_UpdateString $json "appearance.y" "top"
CkJsonObject_UpdateString $json "appearance.x" "left"

# Use a font scale of 7.0
CkJsonObject_UpdateString $json "appearance.fontScale" "7.0"

# The appearance of the PDF signature can contain any number of text lines.
# Chilkat has defined a number of special keywords that can be used in any text line.
# Each keyword is replaced with the actual value.
# For example, "cert_cn" is replaced with the certificate subject's common name (CN).

# Here we are creating a signature with many lines of text, to demonstrate each
# keyword.
CkJsonObject_UpdateString $json "appearance.text[0]" "Date/time in PDF format: current_dt"
CkJsonObject_UpdateString $json "appearance.text[1]" "Current Local date/time: current_datetime"
CkJsonObject_UpdateString $json "appearance.text[2]" "GMT Timestamp: current_timestamp_gmt"
CkJsonObject_UpdateString $json "appearance.text[3]" "Local Timestamp: current_timestamp_local"
CkJsonObject_UpdateString $json "appearance.text[4]" "GMT RFC822 date/time: current_rfc822_dt_gmt"
CkJsonObject_UpdateString $json "appearance.text[5]" "Local RFC822 date/time: current_rfc822_dt_local"
CkJsonObject_UpdateString $json "appearance.text[6]" "Cert DN (Distinguished Name): cert_dn"
CkJsonObject_UpdateString $json "appearance.text[7]" "Cert Common Name: cert_cn"
CkJsonObject_UpdateString $json "appearance.text[8]" "Cert Organizational ID (2.5.4.97): cert_org_id"
CkJsonObject_UpdateString $json "appearance.text[9]" "Cert Email: cert_email"
CkJsonObject_UpdateString $json "appearance.text[10]" "Cert Organization: cert_organization"
CkJsonObject_UpdateString $json "appearance.text[11]" "Cert Organziational Unit: cert_ou"
CkJsonObject_UpdateString $json "appearance.text[12]" "Cert State: cert_state"
CkJsonObject_UpdateString $json "appearance.text[13]" "Cert Country: cert_country"
CkJsonObject_UpdateString $json "appearance.text[14]" "Cert Locality: cert_locality"
CkJsonObject_UpdateString $json "appearance.text[15]" "Cert Serial Number (hex): cert_serial_hex"
CkJsonObject_UpdateString $json "appearance.text[16]" "Cert Serial Number (decimal): cert_serial_dec"
CkJsonObject_UpdateString $json "appearance.text[17]" "Cert Thumbprint: cert_thumbprint"
CkJsonObject_UpdateString $json "appearance.text[18]" "Cert Issuer Common Name: cert_issuer_cn"

set jpgData [new_CkBinData]

set success [CkBinData_LoadFile $jpgData "qa_data/jpg/seal1.jpg"]
if {$success == 0} then {
    puts "Failed to load the JPG image."
    delete_CkPdf $pdf
    delete_CkJsonObject $json
    delete_CkBinData $jpgData
    exit
}

set success [CkPdf_SetSignatureJpeg $pdf $jpgData]
if {$success == 0} then {
    puts [CkPdf_lastErrorText $pdf]
    delete_CkPdf $pdf
    delete_CkJsonObject $json
    delete_CkBinData $jpgData
    exit
}

# Specify that we want to display the JPG image in the center with 33% opacity.
CkJsonObject_UpdateString $json "appearance.image" "custom-jpg"
CkJsonObject_UpdateString $json "appearance.imagePlacement" "center"
CkJsonObject_UpdateString $json "appearance.imageOpacity" "33"

# Load the signing certificate. (Use your own certificate.)
set cert [new_CkCert]

set success [CkCert_LoadPfxFile $cert "qa_data/pfx/myPdfSigningCert.pfx" "pfx_password"]
if {$success == 0} then {
    puts [CkCert_lastErrorText $cert]
    delete_CkPdf $pdf
    delete_CkJsonObject $json
    delete_CkBinData $jpgData
    delete_CkCert $cert
    exit
}

# Tell the pdf object to use the certificate for signing.
set success [CkPdf_SetSigningCert $pdf $cert]
if {$success == 0} then {
    puts [CkPdf_lastErrorText $pdf]
    delete_CkPdf $pdf
    delete_CkJsonObject $json
    delete_CkBinData $jpgData
    delete_CkCert $cert
    exit
}

set success [CkPdf_SignPdf $pdf $json "qa_output/hello_signed.pdf"]
if {$success == 0} then {
    puts [CkPdf_lastErrorText $pdf]
    delete_CkPdf $pdf
    delete_CkJsonObject $json
    delete_CkBinData $jpgData
    delete_CkCert $cert
    exit
}

puts "The PDF has been successfully cryptographically signed."

# The appearance of the signature appears in Adobe Acrobat as shown here:



delete_CkPdf $pdf
delete_CkJsonObject $json
delete_CkBinData $jpgData
delete_CkCert $cert

 

© 2000-2024 Chilkat Software, Inc. All Rights Reserved.