GENDSA(1)                                                    OpenSSL                                                   GENDSA(1)



NAME
       gendsa - generate a DSA private key from a set of parameters

SYNOPSIS
       openssl gendsa [-out filename] [-des] [-des3] [-idea] [-rand file(s)] [-engine id] [paramfile]

DESCRIPTION
       The gendsa command generates a DSA private key from a DSA parameter file (which will be typically generated by the
       openssl dsaparam command).

OPTIONS
       -des|-des3|-idea
           These options encrypt the private key with the DES, triple DES, or the IDEA ciphers respectively before outputting
           it. A pass phrase is prompted for.  If none of these options is specified no encryption is used.

       -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.

       -engine id
           specifying an engine (by its unique id string) will cause gendsa 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.

       paramfile
           This option specifies the DSA parameter file to use. The parameters in this file determine the size of the private
           key. DSA parameters can be generated and examined using the openssl dsaparam command.

NOTES
       DSA key generation is little more than random number generation so it is much quicker that RSA key generation for
       example.

SEE ALSO
       dsaparam(1), dsa(1), genrsa(1), rsa(1)



1.0.0e                                                     2009-04-10                                                  GENDSA(1)