An application that I am writing has the need to produce a signed SMIME
document - that is easy (call PKCS7_sign).
What comes next is hard - I also need to get access to the signature and
send it out to another party. I see I can re-call PKCS7_sign with a
flags equal to PKCS7_DETACH, and it seems to give me what I want. The
problem is that some of the files I deal with are in the ranges of 100's
of megabytes.
My question is: Is there a way in one operation (PKCS7_sign, for
example) to produce the SMIME part of the document as well as get the
signature?
Peace,
Chaz
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