There are times when you need a long, unique, and super secure password. OpenSSL has a command called
rand that outputs a string of pseudo-random bytes. The random bytes are generated using the RAND_bytes(3) function, which provides a security level of 256 bits, provided it managed to seed itself successfully from a trusted operating system entropy source.
This command is a great way to create secure passwords.
For the commands to work below, you'll need to have OpenSSL installed on your machine.
To generate a password, open a terminal window and execute one of the following example commands:
Random Characters Without Any Encoding
openssl rand 30
This command will create a random string of bytes with a length of
30 without any type of encoding applied to the output.
The string output will look something like this:
Random Characters With Base64 Encoding
openssl rand -base64 30
This command is the same as the first one, but base64 encoding is applied to the outputted string. The output will look similar to below:
Random Characters As Hex String
openssl rand -hex 30
This command is the same as the previous one, but the output is shown as a hex string.
Hopefully, this article helps you better understand how to generate a long and unique password with OpenSSL.
Thanks for reading and happy coding!