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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 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.

       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)



50                                               2013-03-05                                        GENDSA(1)

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