NAME

       openssl-pkeyparam, pkeyparam - public key algorithm parameter processing tool

SYNOPSIS

       openssl pkeyparam [-help] [-in filename] [-out filename] [-text] [-noout] [-engine id]
       [-check]

DESCRIPTION

       The pkeyparam command processes public key algorithm parameters.  They can be checked for
       correctness and their components printed out.

OPTIONS

       -help
           Print out a usage message.

       -in filename
           This specifies the input filename to read parameters from or standard input if this
           option is not specified.

       -out filename
           This specifies the output filename to write parameters to or standard output if this
           option is not specified.

       -text
           Prints out the parameters in plain text in addition to the encoded version.

       -noout
           Do not output the encoded version of the parameters.

       -engine id
           Specifying an engine (by its unique id string) will cause pkeyparam 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.

       -check
           This option checks the correctness of parameters.

EXAMPLES

       Print out text version of parameters:

        openssl pkeyparam -in param.pem -text

NOTES

       There are no -inform or -outform options for this command because only PEM format is
       supported because the key type is determined by the PEM headers.

SEE ALSO

       genpkey(1), rsa(1), pkcs8(1), dsa(1), genrsa(1), gendsa(1)

COPYRIGHT

       Copyright 2006-2019 The OpenSSL Project Authors. All Rights Reserved.

       Licensed under the OpenSSL license (the "License").  You may not use this file except in
       compliance with the License.  You can obtain a copy in the file LICENSE in the source
       distribution or at <https://www.openssl.org/source/license.html>.