openssl rsautl -help

saolasosme

RSA utility for signing, verification, encryption, and decryption. Superseded by pkeyutl(1).

$ openssl rsautl -help
Usage: rsautl [options]
Valid options are:
 -help                    Display this summary
 -in infile               Input file
 -out outfile             Output file
 -inkey val               Input key
 -keyform PEM|DER|ENGINE  Private key format - default PEM
 -pubin                   Input is an RSA public
 -certin                  Input is a cert carrying an RSA public key
 -ssl                     Use SSL v2 padding
 -raw                     Use no padding
 -pkcs                    Use PKCS#1 v1.5 padding (default)
 -oaep                    Use PKCS#1 OAEP
 -sign                    Sign with private key
 -verify                  Verify with public key
 -asn1parse               Run output through asn1parse; useful with -verify
 -hexdump                 Hex dump output
 -x931                    Use ANSI X9.31 padding
 -rev                     Reverse the order of the input buffer
 -encrypt                 Encrypt with public key
 -decrypt                 Decrypt with private key
 -passin val              Input file pass phrase source
 -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