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Full Discussion: generate random base 16
Top Forums Shell Programming and Scripting generate random base 16 Post 302702905 by 244an on Wednesday 19th of September 2012 04:06:11 AM
Old 09-19-2012
Quote:
Originally Posted by Chubler_XL
How about:
Code:
openssl rand -hex 16

Not good on FreeBSD 6.2-RELEASE FreeBSD (bash)
Gets
Code:
$ openssl rand -hex16
Usage: rand [options] num
where options are
-out file             - write to file
-engine e             - use engine e, possibly a hardware device.
-rand file:file:... - seed PRNG from files
-base64               - encode output

 

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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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