This command is used to manipulate or generate DSA parameter files.
OPTIONS
-inform DER|PEM
This specifies the input format. The DER option uses an ASN1 DER encoded
form compatible with RFC2459 (PKIX) DSS-Parms that is a
SEQUENCE consisting of p, q and g respectively. The PEM form
is the default format: it consists of the DER format base64 encoded with
additional header and footer lines.
-outform DER|PEM
This specifies the output format, the options have the same
meaning as the -inform
option.
-in filename
This specifies the input filename to read parameters from or
standard input if this option is not specified. If the
numbits parameter is
included then this option will be ignored.
-out filename
This specifies the output filename parameters to. Standard
output is used if this option is not present. The output
filename should not be the
same as the input filename.
-noout
this option inhibits the output of the encoded version of the
parameters.
-text
this option prints out the DSA parameters in human readable
form.
-C
this option converts the parameters into C code. The
parameters can then be loaded by calling the get_dsaXXX() function.
-genkey
this option will generate a DSA either using the specified or
generated parameters.
-rand file(s)
a file or files containing random data used to seed the
random number generator, or an EGD socket (see RAND_egd(3)). Multiple
files can be specified separated by a OS-dependent character.
The separator is ; for
MS-Windows, , for OpenVMS,
and : for all others.
numbits
this option specifies that a parameter set should be
generated of size numbits.
It must be the last option. If this option is included then
the input file (if any) is ignored.
-engine id
specifying an engine (by its unique id string) will cause dsaparam 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.
NOTES
PEM format DSA parameters use the header and footer lines:
