dsaparam(1)

     DSAPARAM(1)            0.9.6h (2000-04-12)            DSAPARAM(1)

     NAME
          dsaparam - DSA parameter manipulation and generation

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

     DESCRIPTION
          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
              ggeett_ddssaaXXXXXX(()) function.

          -genkey
              this option will generate a DSA either using the
              specified or generated parameters.

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     DSAPARAM(1)            0.9.6h (2000-04-12)            DSAPARAM(1)

          -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.

     NOTES
          PEM format DSA parameters use the 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
          gendsa(1), dsa(1), genrsa(1), rsa(1)

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