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NAMEgendsa - generate a DSA private key from a set of parameters
SYNOPSISopenssl gendsa [-out filename] [-aes128] [-aes192] [-aes256] [-camellia128] [-camellia192] [-camellia256] [-des] [-des3] [-idea] [-rand file(s)] [-engine id] [paramfile]
DESCRIPTIONThe gendsa command generates a
DSAprivate key from a
DSAparameter file (which will be typically generated by the openssl dsaparam command).
- These options encrypt the private key with specified cipher 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 EGDsocket (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.
This option specifies the DSAparameter 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.
DSAkey generation is little more than random number generation so it is much quicker that
RSAkey generation for example.