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Host

wasmtime_wasi::p3::bindings::random::insecure_seed

Trait Host 

Source 
pub trait Host {
    // Required method
    fn get_insecure_seed(&mut self) -> Result<(u64, u64)>;
}
Available on crate feature p3 only.

Required Methods§

Source

fn get_insecure_seed(&mut self) -> Result<(u64, u64)>

Return a 128-bit value that may contain a pseudo-random value.

The returned value is not required to be computed from a CSPRNG, and may even be entirely deterministic. Host implementations are encouraged to provide pseudo-random values to any program exposed to attacker-controlled content, to enable DoS protection built into many languages’ hash-map implementations.

This function is intended to only be called once, by a source language to initialize Denial Of Service (DoS) protection in its hash-map implementation.

§Expected future evolution

This will likely be changed to a value import, to prevent it from being called multiple times and potentially used for purposes other than DoS protection.

Dyn Compatibility§

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types§

Source§

impl<_T: Host + ?Sized> Host for &mut _T

Source§

fn get_insecure_seed(&mut self) -> Result<(u64, u64)>

Return a 128-bit value that may contain a pseudo-random value.

The returned value is not required to be computed from a CSPRNG, and may even be entirely deterministic. Host implementations are encouraged to provide pseudo-random values to any program exposed to attacker-controlled content, to enable DoS protection built into many languages’ hash-map implementations.

This function is intended to only be called once, by a source language to initialize Denial Of Service (DoS) protection in its hash-map implementation.

§Expected future evolution

This will likely be changed to a value import, to prevent it from being called multiple times and potentially used for purposes other than DoS protection.

Implementors§