Struct HmacHash 

pub struct HmacHash { /* private fields */ }

HMAC-SHA256 hash strategy — deterministic by construction.

Unlike the other strategies, HmacHash carries its own 32-byte key and computes HMAC-SHA256(key, original) directly. The caller-provided entropy is ignored. This makes the output deterministic regardless of the EntropyMode used by StrategyGenerator.

The output is a lowercase hex string, optionally truncated to output_len characters (default: 32).

Implementations

impl HmacHash

pub fn new(key: [u8; 32]) -> Self

Create with both a key and a default output length (32 hex chars).

pub fn with_output_len(key: [u8; 32], output_len: usize) -> Self

Create with a custom output length (clamped to 1..=64).

Trait Implementations

impl Strategy for HmacHash

fn name(&self) -> &'static str

Human-readable, unique name for this strategy (e.g. "random_string").

fn replace(&self, original: &str, _entropy: &[u8; 32]) -> String

Produce a sanitized replacement for original using entropy.