- NAME
- SYNOPSIS
- DESCRIPTION
- OPTIONS
- EXAMPLES
- NOTES
- SEE ALSO
- HISTORY
- COPYRIGHT

# 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] [-provparam [name:]key=value] [-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 file 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. The output filename can be the same as the input filename, which leads to replacing the file contents. Note that file I/O is not atomic. The output file is truncated and then written.

-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
-provparam [name:]key=value
-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.