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dsaparam(1ssl)							dsaparam(1ssl)

NAME
       dsaparam - DSA parameter manipulation and generation

SYNOPSIS
       openssl	dsaparam  [-inform  DER | PEM] [-outform DER | PEM] [-in file‐
       name] [-out filename] [-noout] [-text] [-C] [-rand filename]  [-genkey]
       [numbits]

OPTIONS
       Specifies  the  input  format.  The DER option uses an ASN1 DER encoded
       form compatible with RFC2459 (PKIX) DSS-Parms that is a	SEQUENCE  con‐
       sisting 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.	Specifies the output format, the options have the same
       meaning as the -inform option.  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.
       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.	 Inhibits the output of the encoded version of
       the parameters.	Prints out the DSA parameters in human readable	 form.
       Converts	 the parameters into C code. The parameters can then be loaded
       by calling the get_dsaXXX() function.  Generates a DSA either using the
       specified  or  generated parameters.  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 an OS-depen‐
       dent character. The separator is a  semicolon  (;)  for	MS-Windows,  a
       comma  (,) for OpenVMS, and a colon (:) for all others.	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.

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

NOTES
       PEM format DSA parameters use the following header and footer lines:
	-----BEGIN DSA PARAMETERS-----
	-----END DSA PARAMETERS-----

       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.

SEE ALSO
       Commands: gendsa(1ssl), dsa(1ssl), genrsa(1ssl), rsa(1ssl)

								dsaparam(1ssl)

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