Section: OpenSSL (1SSL)
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pkcs7 - PKCS#7 utility
The pkcs7 command processes PKCS#7 files in DER or PEM format.
- -inform DER|PEM
This specifies the input format. DER format is DER encoded PKCS#7
v1.5 structure.PEM (the default) is a base64 encoded version of
the DER form with header and footer lines.
- -outform DER|PEM
This specifies the output format, the options have the same meaning as the
- -in filename
This specifies the input filename to read from or standard input if this
option is not specified.
- -out filename
specifies the output filename to write to or standard output by
prints out any certificates or CRLs contained in the file. They are
preceded by their subject and issuer names in one line format.
prints out certificates details in full rather than just subject and
don't output the encoded version of the PKCS#7 structure (or certificates
is -print_certs is set).
- -engine id
specifying an engine (by it's unique id string) will cause req
to attempt to obtain a functional reference to the specified engine,
thus initialising it if needed. The engine will then be set as the default
for all available algorithms.
Convert a PKCS#7 file from PEM to DER:
openssl pkcs7 -in file.pem -outform DER -out file.der
Output all certificates in a file:
openssl pkcs7 -in file.pem -print_certs -out certs.pem
The PEM PKCS#7 format uses the header and footer lines:
For compatibility with some CAs it will also accept:
There is no option to print out all the fields of a PKCS#7 file.
This PKCS#7 routines only understand PKCS#7 v 1.5 as specified in RFC2315 they
cannot currently parse, for example, the new CMS as described in RFC2630.
- COMMAND OPTIONS
- SEE ALSO
This document was created by
using the manual pages.