Enum MemLimit

pub enum MemLimit {
    Interactive = 67_108_864,
    Moderate = 268_435_456,
    Sensitive = 1_073_741_824,
}

Password hash memory limit.

It represents a maximum amount of memory required to perform password hashing. It is often used with OpsLimit.

For interactive, online operations, OpsLimit::Interactive and MemLimit::Interactive provide base line for these two parameters. This requires 64 MB of dedicated RAM. Higher values may improve security.

Alternatively, OpsLimit::Moderate and MemLimit::Moderate can be used. This requires 256 MB of dedicated RAM, and takes about 0.7 seconds on a 2.8 Ghz Core i7 CPU.

For highly sensitive data and non-interactive operations, OpsLimit::Sensitive and MemLimit::Sensitive can be used. With these parameters, deriving a key takes about 3.5 seconds on a 2.8 Ghz Core i7 CPU and requires 1024 MB of dedicated RAM.

See https://download.libsodium.org/doc/password_hashing/the_argon2i_function for more details.

Variants

Interactive = 67_108_864

64 MB

Moderate = 268_435_456

256 MB

Sensitive = 1_073_741_824

1024 MB

Trait Implementations

impl Clone for MemLimit

fn clone(&self) -> MemLimit

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MemLimit

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

Formats the value using the given formatter.

impl Default for MemLimit

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for MemLimit

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<i32> for MemLimit

fn from(n: i32) -> Self

Converts to this type from the input type.

impl Into<i32> for MemLimit

fn into(self) -> i32

Converts this type into the (usually inferred) input type.

impl PartialEq for MemLimit

fn eq(&self, other: &MemLimit) -> 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 Serialize for MemLimit

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for MemLimit

impl StructuralPartialEq for MemLimit