Trait wasmtime_wasi::bindings::sync::random::insecure_seed::Host
source · pub trait Host: Send {
// Required method
fn insecure_seed(&mut self) -> Result<(u64, u64)>;
}Required Methods§
sourcefn insecure_seed(&mut self) -> Result<(u64, u64)>
fn 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.
Implementations on Foreign Types§
source§impl<_T: Host + ?Sized + Send> Host for &mut _T
impl<_T: Host + ?Sized + Send> Host for &mut _T
source§fn insecure_seed(&mut self) -> Result<(u64, u64)>
fn 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.