Free Knowledge Resources


Linux Manual Pages


Free Software * Books

Source Code

Free Media

Linux

gendsa(1ssl)


NAME

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

SYNOPSIS

   openssl gendsa [-out filename] [-aes128] [-aes192] [-aes256]
   [-camellia128] [-camellia192] [-camellia256] [-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

   -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 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)



Opportunity


Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.

Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.



Free Software


Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.

Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.



Free Books


The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.

Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.



Education


Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.

Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.


birds banner