Generating Random Bytes On the Command Line with OpenSSL

I've recently needed to generate an AES encryption key for a new project I've been working on.

I needed to generate a specific number of bytes, and fortunately the OpenSSL CLI came to the rescue with openssl rand:

# raw bytes
openssl rand 32
# as base64
openssl rand -base64 32
# as a hex representation
openssl rand -hex 32

Written by Jamie Tanna's profile image Jamie Tanna on , and last updated on .

Content for this article is shared under the terms of the Creative Commons Attribution Non Commercial Share Alike 4.0 International, and code is shared under the Apache License 2.0.

#blogumentation #openssl #command-line.

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