(Lianja) Duplicate openssl smime -decrypt -in some_file.dat.enc -binary -inform DER -inkey private.key -out some_file.dat

Demonstrates how to decrypt binary DER that was encrypted using the following openssl command:

openssl smime -encrypt -binary -aes-256-cbc -in some_file.dat -out some_file.dat.enc -outform DER cert.crt

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

// Duplicates the following openssl command:
// openssl smime -decrypt -in hello.txt.enc -binary -inform DER -inkey private.key -out hello.txt

loCert = createobject("CkCert")
llSuccess = loCert.LoadFromFile("qa_data/openssl/EE.cer")
if (llSuccess = .F.) then
    ? loCert.LastErrorText
    release loCert
    return
endif

loBd = createobject("CkBinData")
llSuccess = loBd.LoadFile("qa_data/openssl/EE.key")
// Assuming success..

loPrivKey = createobject("CkPrivateKey")
llSuccess = loPrivKey.LoadAnyFormat(loBd,"")
if (llSuccess = .F.) then
    ? loPrivKey.LastErrorText
    release loCert
    release loBd
    release loPrivKey
    return
endif

loCrypt = createobject("CkCrypt2")
llSuccess = loCrypt.SetDecryptCert2(loCert,loPrivKey)
if (llSuccess = .F.) then
    ? loCrypt.LastErrorText
    release loCert
    release loBd
    release loPrivKey
    release loCrypt
    return
endif

loCrypt.CryptAlgorithm = "PKI"
llSuccess = loCrypt.CkDecryptFile("qa_data/openssl/hello.txt.enc","qa_output/hello.txt")
if (llSuccess = .F.) then
    ? loCrypt.LastErrorText
    release loCert
    release loBd
    release loPrivKey
    release loCrypt
    return
endif

? "Success."


release loCert
release loBd
release loPrivKey
release loCrypt