How do I create a message digest using openssl?

The openssl tool has a dgst command which creates message digests. Here’s an example:

$ echo 'hello world' | openssl dgst -sha512 -hex

Various flags change the hash algorithm, e.g. -sha1.

A useful flag is -hmac, which lets you sign the content with a shared password:

$ echo 'hello world' | openssl dgst -sha1 -hex -hmac secret_password_1
Tagged #hmac, #hashing, #openssl, #cryptography, #programming, #cli.

Similar posts

More by Jim

👋 I'm Jim, a full-stack product engineer. Want to build an amazing product and a profitable business? Read more about me or Get in touch!

This page copyright James Fisher 2017. Content is not associated with my employer. Found an error? Edit this page.