man > OPENSSL-PKEYPARAM(1SSL)

OPENSSL-PKEYPARAM(1SSL)                        OpenSSL                       OPENSSL-PKEYPARAM(1SSL)

NAME
       openssl-pkeyparam - public key algorithm parameter processing command

SYNOPSIS
       openssl pkeyparam [-help] [-in filename] [-out filename] [-text] [-noout] [-check] [-engine
       id] [-provider name] [-provider-path path] [-propquery propq]

DESCRIPTION
       This 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.

       -check
           This option checks the correctness of parameters.

       -engine id
           See "Engine Options" in openssl(1).  This option is deprecated.

       -provider name
       -provider-path path
       -propquery propq
           See "Provider Options" in openssl(1), provider(7), and property(7).

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

HISTORY
       The -engine option was deprecated in OpenSSL 3.0.

COPYRIGHT
       Copyright 2006-2021 The OpenSSL Project Authors. All Rights Reserved.

       Licensed  under  the Apache License 2.0 (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>.

3.0.13                                       2026-07-29                      OPENSSL-PKEYPARAM(1SSL)