RAND
Section: OpenSSL (1)
Updated: 2019-02-26
Page Index
NAME
openssl-rand,
rand - generate pseudo-random bytes
SYNOPSIS
openssl rand
[
-out file]
[
-rand file(s)]
[
-base64]
[
-hex]
num
DESCRIPTION
The
rand command outputs
num pseudo-random bytes after seeding
the random number generator once. As in other
openssl command
line tools,
PRNG seeding uses the file
$HOME
/.rnd or
.rnd
in addition to the files given in the
-rand option. A new
$HOME
/
.rnd or
.rnd file will be written back if enough
seeding was obtained from these sources.
OPTIONS
- -out file
-
Write to file instead of standard output.
- -rand file(s)
-
Use specified file or files or EGD socket (see RAND_egd(3))
for seeding the random number generator.
Multiple files can be specified separated by a OS-dependent character.
The separator is ; for MS-Windows, , for OpenVMS, and : for
all others.
- -base64
-
Perform base64 encoding on the output.
- -hex
-
Show the output as a hex string.
SEE ALSO
RAND_bytes(3)