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Anubis version 4.2.90 does not yet provide built-in support
for S/MIME encryption or signing. To encrypt or sign messages using
S/MIME, you will have to use external programs. Usually such programs
require the whole message as their input, so simply using
external-body-processor will not work. GNU Anubis distribution
includes a special Guile program, ‘entire-msg.scm’, designed for
use with such programs. For its detailed description, please refer to
Entire Message Filters. This chapter addresses a special case of
using it with
openssl to sign outgoing messages.
openssl for S/MIME signing, invoke it using
openssl-filter function defined in ‘entire-msg.scm’. Give
it at least
-signer arguments. Notice, that
you should not specify any input or output files.
The following example illustrates this approach:
BEGIN GUILE guile-load-program entire-msg.scm END BEGIN RULE guile-process openssl-filter /usr/local/ssl/bin/openssl \ smime -sign -signer FILE END
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