Enum ScramState 

pub enum ScramState {
    Initial,
    ServerFirstSent {
        username: String,
        client_nonce: String,
        server_nonce: String,
        salt: Vec<u8>,
        iterations: u32,
        auth_message: String,
    },
    Complete,
}

SCRAM-SHA-256 authentication state machine

Implements the full SCRAM protocol for secure password-based authentication. This is significantly more secure than PLAIN because:

1. The password is never sent over the wire (even encrypted)
2. The server stores derived keys, not the password
3. Mutual authentication (server proves it knows the password too)
4. Protection against replay attacks via nonces

Variants

Initial

Waiting for client-first-message

ServerFirstSent

Waiting for client-final-message

Fields

username: String

client_nonce: String

server_nonce: String

salt: Vec<u8>

iterations: u32

auth_message: String

Complete

Authentication complete (success or failure pending verification)

Trait Implementations

impl Clone for ScramState

fn clone(&self) -> ScramState

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ScramState

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.