Struct Argon2Params 

pub struct Argon2Params {
    pub m_cost: u32,
    pub t_cost: u32,
    pub p_cost: u32,
    pub output_len: usize,
}

Available on (crate features kdf-hkdf or kdf-argon2) and crate feature kdf-argon2 only.

Tuneable Argon2id parameters.

Construct via Argon2Params::default (OWASP-recommended, ~100 ms on a modern CPU) or via Argon2Params::new for custom values.

• m_cost: memory cost in kibibytes (1 unit = 1024 bytes).
• t_cost: number of iterations (time cost).
• p_cost: parallelism / lanes.
• output_len: derived-key length in bytes; defaults to 32.

Reducing any parameter reduces resistance to brute-force; the defaults are tuned for “human authentication” (login flows). For machine-to-machine credentials a higher memory/time cost is appropriate.

Fields

m_cost: u32

Memory cost in kibibytes.

t_cost: u32

Time cost (iterations).

p_cost: u32

Parallelism (number of lanes).

output_len: usize

Derived-key length in bytes.

Implementations

impl Argon2Params

pub const fn new( m_cost: u32, t_cost: u32, p_cost: u32, output_len: usize, ) -> Self

Construct a custom parameter set.

Trait Implementations

impl Clone for Argon2Params

fn clone(&self) -> Argon2Params

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Argon2Params

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

Formats the value using the given formatter.

impl Default for Argon2Params

fn default() -> Self

OWASP-recommended defaults for sensitive web-facing password hashing: 19 MiB memory, 2 iterations, 1 lane, 32-byte output. Yields roughly 100 ms per hash on a modern CPU.

impl PartialEq for Argon2Params

fn eq(&self, other: &Argon2Params) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for Argon2Params

impl Eq for Argon2Params

impl StructuralPartialEq for Argon2Params