Module auth 

PostgreSQL authentication: MD5 and SCRAM-SHA-256.

The hashing primitives come from crates rather than being hand-written — this is the one place where “from scratch” would be a liability instead of a feature. Everything around them, including the SCRAM message flow, is ours.

Structs

Scram

A SCRAM-SHA-256 exchange in progress.

Functions

md5_password

The md5 auth response: md5 + hex(md5(hex(md5(password + user)) + salt)).