Linux "gendsa" Command Line Options and Examples

generate a DSA private key from a set of parameters

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

Usage:

openssl gendsa [-help] [-out filename] [-aes128] [-aes192] [-aes256] [-camellia128] [-camellia192] [-camellia256] [-des] [-des3] [-idea] [-rand file(s)] [-engine id] [paramfile]

Related Commands

Command Line Options:

-help

Print out a usage message.


                            gendsa -help ...

-out

Output the key to the specified file. If this argument is not specified then standard output is used.


                            gendsa -out ...

-aes128|-aes192|-aes256|-camellia128|-camellia192|-camellia256|-des|-des3|-idea

These options encrypt the private key with specified cipher before outputting it. A pass phrase is prompted for. If none ofthese options is specified no encryption is used.


                            gendsa -aes128|-aes192|-aes256|-camellia128|-camellia192|-camellia256|-des|-des3|-idea ...

-rand

a file or files containing random data used to seed the random number generator, or an EGD socket (see RAND_egd(3)). Multiplefiles can be specified separated by an OS-dependent character. The separator is ; for MS-Windows, , for OpenVMS, and : for allothers.


                            gendsa -rand ...

-engine

specifying an engine (by its unique id string) will cause gendsa to attempt to obtain a functional reference to the specifiedengine, thus initialising it if needed. The engine will then be set as the default for all available algorithms.paramfileThis option specifies the DSA parameter file to use. The parameters in this file determine the size of the private key. DSAparameters can be generated and examined using the openssl dsaparam command.NOTESDSA key generation is little more than random number generation so it is much quicker that RSA key generation for example.


                            gendsa -engine ...