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

VB.NET 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

 

 

 

(VB.NET) Add DomainKey-Signature Header to MIME / Email

Demonstrates how to add a DomainKey-Signature header field to a MIME message.

Note: The DKIM / DomainKey functionality is included with the Chilkat MIME license.

Chilkat .NET Downloads

Chilkat .NET Assemblies

Chilkat for .NET Core

Chilkat for Mono

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

Dim dkim As New Chilkat.Dkim

' To create a DomainKey signature for email (i.e. MIME),
' you'll need to provide the following:
' (1) An RSA private key in any common file format.
' (2) The domain name (typically the same domain
' as the sender of an email).
' (3) A selector for the domain name -- an arbitrary string
' to identify the matching public key in DNS.

' To allow an email recipient to verify the DomainKey signature via an
' external email client supporting DomainKey or using other software,
' you will need to create a DNS record with the selector
' and matching public key.  This example does not provide
' information about DomainKey DNS record creation.  
' (Chilkat does not provide an API for creating DNS records.  
' Creating the DomainKey DNS record is something you would do
' manually.)

' Set the domain and selector:
' You'll need to provide your own values here..
dkim.DomainKeyDomain = "chilkatsoft.com"
dkim.DomainKeySelector = "salmon"

' Load a private key from any common RSA private key
' format, such as DER, PKCS8, PEM, XML, etc.
' The LoadDomainKeyPkFile method automatically detects
' the file format and reads it appropriately.
' If a password is not required, you'll still need to provide
' a password string argument, but it is ignored.
Dim password As String
password = "optionalPassword"
Dim success As Boolean = dkim.LoadDomainKeyPkFile("myPrivateKey.pem",password)
If (success <> True) Then
    Debug.WriteLine(dkim.LastErrorText)
    Exit Sub
End If


' Load a MIME file into a byte array.
Dim fac As New Chilkat.FileAccess
Dim mimeData() As Byte
mimeData = fac.ReadEntireFile("testMessage.eml")
If (fac.LastMethodSuccess <> True) Then
    Debug.WriteLine(fac.LastErrorText)
    Exit Sub
End If


' Sign it.  This adds the DomainKey-Signature header and
' returns the new MIME with DomainKey-Signature added.
Dim domainKeySignedMime() As Byte
domainKeySignedMime = dkim.AddDomainKeySignature(mimeData)
If (dkim.LastMethodSuccess <> True) Then
    Debug.WriteLine(dkim.LastErrorText)
    Exit Sub
End If


success = fac.WriteEntireFile("domainKeySigned.eml",domainKeySignedMime)
If (success <> True) Then
    Debug.WriteLine(fac.LastErrorText)
    Exit Sub
End If


Debug.WriteLine("Success.")

 

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