openssl ecparam -help

[saolasosme]

EC parameter manipulation and generation.

$ openssl ecparam -help
Usage: ecparam [options]
Valid options are:
 -help               Display this summary
 -inform PEM|DER     Input format - default PEM (DER or PEM)
 -outform PEM|DER    Output format - default PEM
 -in infile          Input file  - default stdin
 -out outfile        Output file - default stdout
 -text               Print the ec parameters in text form
 -C                  Print a 'C' function creating the parameters
 -check              Validate the ec parameters
 -list_curves        Prints a list of all curve 'short names'
 -no_seed            If 'explicit' parameters are chosen do not use the seed
 -noout              Do not print the ec parameter
 -name val           Use the ec parameters with specified 'short name'
 -conv_form val      Specifies the point conversion form 
 -param_enc val      Specifies the way the ec parameters are encoded
 -genkey             Generate ec key
 -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