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Sign a File to Create a .p7s File (Detached Signature)

Ruby example to create a detached signature file (.p7s) for any type file. The signature can be verified by calling VerifyP7S and passing the original filename and the .p7s filename.

Download Chilkat Ruby Library

require 'chilkat'

crypt = Chilkat::CkCrypt2.new()

#  Any string argument automatically begins the 30-day trial.
success = crypt.UnlockComponent("30-day trial")
if (success != true)
    print "Crypt component unlock failed" + "\n"
    exit
end

#  Find our digital certificate from the Current User certificate store.
ccs = Chilkat::CkCreateCS.new()

certStore = ccs.OpenCurrentUserStore()

cert = certStore.FindCertBySubjectCN("Chilkat Software, Inc.")
if (cert == nil )
    print cert.lastErrorText() + "\n"

    exit
end

#  Tell the crypt component to use this cert.
crypt.SetSigningCert(cert)

#  We can sign any type of file, creating a .p7s as output:
success = crypt.CreateP7S("license.rtf","license.p7s")
if (success == false)
    print crypt.lastErrorText() + "\n"

    exit
end

#  Verify the signature:
crypt.SetVerifyCert(cert)

success = crypt.VerifyP7S("license.rtf","license.p7s")
if (success == false)
    print crypt.lastErrorText() + "\n"

    exit
end

print "Success!" + "\n"
 

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