Tcl

S/MIME Encrypt using Certificate in Apple Keychain

See more Apple Keychain Examples

Encrypts MIME to creates S/MIME using a certificate found in the Apple Keychain. Tcl

load ./chilkat.dll

set success 0

set cert [new_CkCert]

# Load the certificate by the Subject Common Name
# On MacOS and iOS, Chilkat will search the Keychain(s) for the matching certificate.
set success [CkCert_LoadByCommonName $cert "My Cert"]
if {$success == 0} then {
    puts [CkCert_lastErrorText $cert]
    delete_CkCert $cert
    exit
}

# Note: The private key is not needed for encryption.
# Only the certificate is needed.

# Create a simple MIME message to encrypt.
set mime [new_CkMime]

CkMime_AddHeaderField $mime "Subject" "test"
CkMime_AddHeaderField $mime "SomeHeader" "123"
CkMime_AddHeaderField $mime "Content-Type" "text/plain"
CkMime_SetBody $mime "This is the body."

puts [CkMime_getMime $mime]
puts "----"

# Here's the MIME to be encrypted:

# Subject: test
# SomeHeader: 123
# Content-Type: text/plain
# 
# This is the body.

# -------------------------------------
# Encrypt the MIME.
set success [CkMime_Encrypt $mime $cert]
if {$success == 0} then {
    puts [CkMime_lastErrorText $mime]
    delete_CkCert $cert
    delete_CkMime $mime
    exit
}

# Show the encrypted MIME (S/MIME)
puts [CkMime_getMime $mime]

# Save the encrypted MIME to a file.
CkMime_SaveMime $mime "./encrypted.mime"

# Here's the S/MIME

# Subject: test
# SomeHeader: 123
# Content-Type: application/x-pkcs7-mime; name="smime.p7m"; smime-type="enveloped-data"
# Content-Disposition: attachment; filename="smime.p7m"
# Content-Transfer-Encoding: base64
# 
# MIICSwYJKoZIhvcNAQcDoIICPDCCAjgCAQAxggGzMIIBrwIBADCBljCBgTELMAkGA1UEBhMCSVQx
# EDAOBgNVBAgMB0JlcmdhbW8xGTAXBgNVBAcMEFBvbnRlIFNhbiBQaWV0cm8xFzAVBgNVBAoMDkFj
# dGFsaXMgUy5wLkEuMSwwKgYDVQQDDCNBY3RhbGlzIENsaWVudCBBdXRoZW50aWNhdGlvbiBDQSBH
# MwIQPCWvkSv8oQ7xRmEHJ6TzEDANBgkqhkiG9w0BAQEFAASCAQB3VZvHRE5EWxug7Sckpcz1ucDZ
# YiTKiqmyPt75MhzNRQLtKFx/jWwlemUwnPMzeu6yutCkZ74Bdn7MBsfDqV3bUz43wAu+fRBteGvF
# mTc00MfY8L7o8dkpj4AqAOCj4hKQzbSE99GvSzyXcPE2Gm5NrOPtKxqfFqbBRTCb4fBZP84LaL+x
# rnYfrM4qXTppixyN8iFYCd4maEbMu/GA5o+j0BkDDnx42pILDoAGV/ERyx55Y3Nc2Mhm/cITBMNn
# g7uS9KPrlYizNaqVu09Hi9jg4gdZaRiTjUqg05tSOk/YqIQxTgfscwSPY92/ewpI6e1EHtLt8Q33
# gWCbERptSntUMHwGCSqGSIb3DQEHATAdBglghkgBZQMEAQIEENm1AxeXlEMx7p6McjHIj5CAUEQj
# 0GuJ5LnTqiqIjOiwmwNidl1N1TRluxX5vAQvwBuYE6bQK4+i04yn2Av3cucW4kvxgP2Nmni+XgQt
# aPPKlasaVceEeZ15IYjw77/m3YYn

delete_CkCert $cert
delete_CkMime $mime