pub struct Cost {
pub m_cost: u32,
pub t_cost: u32,
pub p_cost: u32,
}Expand description
Argon2id cost parameters for hashing a new password.
Every hash records the values it was produced with, so a change takes
effect on new hashes only. Each hashing operation holds m_cost KiB for
its duration, which dominates the server’s cost when several run at once.
Fields§
§m_cost: u32Size of the working buffer, in 1 KiB blocks.
t_cost: u32Number of passes made over the working buffer.
p_cost: u32Number of lanes the working buffer is divided into.
Implementations§
Source§impl Cost
impl Cost
Sourcepub fn is_recommended(self) -> bool
pub fn is_recommended(self) -> bool
Whether the cost is at least as strong as the weakest OWASP Argon2id recommendation.
The recommended pairs of memory and passes run from (47104, 1) down to
(7168, 5) at a roughly constant product, so a cost qualifies when its
memory is at least 7168 blocks and its memory times its passes at least
matches that last pair. Lanes are left out, since p_cost divides that
work rather than adding to it.
Trait Implementations§
Auto Trait Implementations§
impl Freeze for Cost
impl RefUnwindSafe for Cost
impl Send for Cost
impl Sync for Cost
impl Unpin for Cost
impl UnsafeUnpin for Cost
impl UnwindSafe for Cost
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