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DSAPARAM(1)			    OpenSSL			   DSAPARAM(1)

       dsaparam	- DSA parameter	manipulation and generation

       openssl dsaparam	[-inform DER|PEM] [-outform DER|PEM] [-in filename]
       [-out filename] [-noout]	[-text]	[-C] [-rand file(s)] [-genkey] [-en-
       gine id]	[numbits]

       This command is used to manipulate or generate DSA parameter files.

       -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 SE-
	   QUENCE 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	stan-
	   dard	input if this option is	not specified. If the numbits parame-
	   ter 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.

	   this	option inhibits	the output of the encoded version of the pa-

	   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.

	   this	option will generate a DSA either using	the specified or gen-
	   erated parameters.

       -rand file(s)
	   a file or files containing random data used to seed the random num-
	   ber generator, or an	EGD socket (see	RAND_egd(3)).  Multiple	files
	   can be specified separated by a OS-dependent	character.  The	sepa-
	   rator is ; for MS-Windows, ,	for OpenVMS, and : for all others.

	   this	option specifies that a	parameter set should be	generated of
	   size	numbits. It must be the	last option. If	this option is in-
	   cluded then the input file (if any) is ignored.

       -engine id
	   specifying an engine	(by it's unique	id string) will	cause req 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.

       PEM format DSA parameters use the header	and footer lines:


       DSA parameter generation	is a slow process and as a result the same set
       of DSA parameters is often used to generate several distinct keys.

       gendsa(1), dsa(1), genrsa(1), rsa(1)

0.9.7d				  2005-02-25			   DSAPARAM(1)


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