Trait wasmtime_wasi::bindings::sync::random::insecure_seed::Host

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pub trait Host: Send {
    // Required method
    fn insecure_seed(&mut self) -> Result<(u64, u64)>;
}

Required Methods§

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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§

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

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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.

Implementors§

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impl<T> Host for WasiImpl<T>
where T: WasiView,