openssl pkeyutl -help

saolasosme

Public key algorithm cryptographic operation utility.

$ openssl pkeyutl -help
Usage: pkeyutl [options]
Valid options are:
 -help                     Display this summary
 -in infile                Input file - default stdin
 -out outfile              Output file - default stdout
 -pubin                    Input is a public key
 -certin                   Input is a cert with a public key
 -asn1parse                asn1parse the output data
 -hexdump                  Hex dump output
 -sign                     Sign input data with private key
 -verify                   Verify with public key
 -verifyrecover            Verify with public key, recover original data
 -rev                      Reverse the order of the input buffer
 -encrypt                  Encrypt input data with public key
 -decrypt                  Decrypt input data with private key
 -derive                   Derive shared secret
 -kdf val                  Use KDF algorithm
 -kdflen +int              KDF algorithm output length
 -sigfile infile           Signature file (verify operation only)
 -inkey val                Input private key file
 -peerkey val              Peer key file used in key derivation
 -passin val               Input file pass phrase source
 -peerform PEM|DER|ENGINE  Peer key format - default PEM
 -keyform PEM|DER|ENGINE   Private key format - default PEM
 -pkeyopt val              Public key options as opt:value
 -rand val                 Load the file(s) into the random number generator
 -writerand outfile        Write random data to the specified file
 -engine val               Use engine, possibly a hardware device
 -engine_impl              Also use engine given by -engine for crypto operations