(Lianja) Duplicate OpensSSL to Sign File and Output Binary DER

This example duplicates the following:

openssl smime -sign -in INPUT.xml -signer SIGN.PEM -passin pass:MYPASS -outform der -binary -nodetach -out SIGNED.P7M

Note: Although "smime" is the OpenSSL command, it's not actually producing S/MIME. The arguments "-outform der -binary" indicates that the output is binary DER (i.e. the PKCS7 binary signature). The input can be any type of file: XML, PDF, JPG, ... *anything*...

Chilkat Lianja Extension Download Chilkat Lianja Extension

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

loCrypt = createobject("CkCrypt2")

// Load the PEM containing cert + private key.
loPem = createobject("CkPem")
llSuccess = loPem.LoadPemFile("qa_data/pem/myPem.pem","password")
if (llSuccess <> .T.) then
    ? loPem.LastErrorText
    release loCrypt
    release loPem
    return
endif

loPrivkey = loPem.GetPrivateKey(0)
if (loPem.LastMethodSuccess <> .T.) then
    ? loPem.LastErrorText
    release loCrypt
    release loPem
    return
endif

loCert = loPem.GetCert(0)
if (loPem.LastMethodSuccess <> .T.) then
    release loPrivkey
    ? loPem.LastErrorText
    release loCrypt
    release loPem
    return
endif

llSuccess = loCrypt.SetSigningCert2(loCert,loPrivkey)
if (llSuccess <> .T.) then
    release loPrivkey
    release loCert
    ? loCrypt.LastErrorText
    release loCrypt
    release loPem
    return
endif

release loPrivkey
release loCert

// Alternatively, we could use a .pfx/.p12 file.
// (Chilkat also supports other formats/sources for cert/private keys...)
loCertFromP12 = createobject("CkCert")
llSuccess = loCertFromP12.LoadPfxFile("qa_data/p12/myP12.p12","password")
if (llSuccess <> .T.) then
    ? loCertFromP12.LastErrorText
    release loCrypt
    release loPem
    release loCertFromP12
    return
endif

// The certificate, when loaded from a .pfx/.p12, will automatically 
// include the associated private key, assuming it's present in the .p12.
// We don't have to explicitly provide the private key as in the
// lines of code above that use the PEM file.
llSuccess = loCrypt.SetSigningCert(loCertFromP12)
if (llSuccess <> .T.) then
    ? loCrypt.LastErrorText
    release loCrypt
    release loPem
    release loCertFromP12
    return
endif

// Create the opaque signature (PKCS7 binary DER that contains both the signature and original file data).
llSuccess = loCrypt.CreateP7M("qa_data/infile.anything","qa_output/outfile.p7m")
if (llSuccess <> .T.) then
    ? loCrypt.LastErrorText
    release loCrypt
    release loPem
    release loCertFromP12
    return
endif

? "Success."


release loCrypt
release loPem
release loCertFromP12