openssl rsa -help

saolasosme

RSA key management.

$ openssl rsa -help
Usage: rsa [options]
Valid options are:
 -help              Display this summary
 -inform format     Input format, one of DER NET PEM
 -outform format    Output format, one of DER NET PEM PVK
 -in val            Input file
 -out outfile       Output file
 -pubin             Expect a public key in input file
 -pubout            Output a public key
 -passout val       Output file pass phrase source
 -passin val        Input file pass phrase source
 -RSAPublicKey_in   Input is an RSAPublicKey
 -RSAPublicKey_out  Output is an RSAPublicKey
 -noout             Don't print key out
 -text              Print the key in text
 -modulus           Print the RSA key modulus
 -check             Verify key consistency
 -*                 Any supported cipher
 -pvk-strong        Enable 'Strong' PVK encoding level (default)
 -pvk-weak          Enable 'Weak' PVK encoding level
 -pvk-none          Don't enforce PVK encoding
 -engine val        Use engine, possibly a hardware device