protoc-gen-gotemplate/vendor/github.com/Masterminds/sprig/docs/crypto.md

Cryptographic and Security Functions

Sprig provides a couple of advanced cryptographic functions.

sha256sum

The sha256sum function receives a string, and computes it's SHA256 digest.

sha256sum "Hello world!"

The above will compute the SHA 256 sum in an "ASCII armored" format that is safe to print.

derivePassword

The derivePassword function can be used to derive a specific password based on some shared "master password" constraints. The algorithm for this is well specified.

derivePassword 1 "long" "password" "user" "example.com"

Note that it is considered insecure to store the parts directly in the template.

generatePrivateKey

The generatePrivateKey function generates a new private key encoded into a PEM block.

It takes one of the values for its first param:

• ecdsa: Generate an elyptical curve DSA key (P256)
• dsa: Generate a DSA key (L2048N256)
• rsa: Generate an RSA 4096 key