vNEXT
Converts a string into an SHA-256 hash using a hash message authentication code (HMAC). The secret key is passed as the filter argument. The output is a lowercase hexadecimal string.
Input
{%- assign secret_potion = 'Polyjuice' | hmac_sha256: 'Polina' -%}
My secret potion: {{ secret_potion }}
Output
My secret potion: 8e0d5d65cff1242a4af66c8f4a32854fd5fb80edcc8aabe9b302b29c7c71dc20