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Determining if a message has multiple layers without processing a ny of them

2003-06-14 07:43:33

I am currently attempting to determine if there is anything in the S/MIME
standard that would allow me to determine if a message was, for example,
signed then encrypted, without processing any of the security layers.

My understanding of the smime-type parameter is that it only applies to the
current layer of security, so for example, a message that was signed and
then encrypted will have an outer smime-type of enveloped-data with no clue
that there is a signature layer within.

Any insight into this is much appreciated.

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