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Ruby Requires Chilkat v11.0.0+

DKIM Signature using Windows Current User Certificate Store

See more DKIM / DomainKey Examples

This is a Windows-specific example to load a certificate from the Current User (registry-based) certificate store, and then use the certificate's associated private key for a DKIM signature.

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Ruby
require 'chilkat'

success = false

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

cert = Chilkat::CkCert.new()

#  The LoadByCommonName method searches the Windows Local Machine and Current User 
#  registry-based certificate stores for a certificate having the common name specified. 
#  If found, the certificate is loaded and ready for use.
success = cert.LoadByCommonName("My Certificate ABC")
if (success == false)
    print cert.lastErrorText() + "\n";
    exit
end

#  The certificate must have an associated private key installed, and it must be a
#  private key that has been marked "exportable" when it was originally installed.
if (!cert.HasPrivateKey())
    print "This certificate does not have a private key available." + "\n";
    exit
end

privKey = Chilkat::CkPrivateKey.new()
success = cert.GetPrivateKey(privKey)
if (success == false)
    print cert.lastErrorText() + "\n";
    exit
end

dkim = Chilkat::CkDkim.new()

#  Load the private key into the DKIM object:
success = dkim.SetDkimPrivateKey(privKey)
if (success == false)
    print dkim.lastErrorText() + "\n";
    exit
end

#  The private key has been loaded into the DKIM object.  See the other DKIM
#  examples for guidance on how to create a DKIM signature...