pkeyparam.1s

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

The pkey command processes public or private keys. They can be converted between various forms and their components printed out.

-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.

Print out text version of parameters:

 openssl pkeyparam -in param.pem -text

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.

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