NAME
rand - generate pseudo-random bytes
LIBRARY
libcrypto, -lcrypto
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)