DOT-Files/Gentoo/gentooamd/home/user/.tldrc/tldr/pages/common/openssl-rand.md

openssl rand

Generate random bytes using a cryptographically secure PRNG. More information: https://docs.openssl.org/master/man1/openssl-rand/.

• Generate an 8-byte (16 characters) hex string and write it to stdout:

openssl rand -hex 8

• Generate 20 random bytes encoded in base64:

openssl rand -base64 20

• Generate random bytes and write them to a file (without encoding):

openssl rand -out {{path/to/file}} {{length}}

• Generate 1 KiB/MiB/GiB/TiB random bytes encoded in hex/base64:

openssl rand -{{hex|base64}} 1{{K|M|G|T}}