wasmtime_wasi/p2/host/
random.rs

1use crate::p2::bindings::random::{insecure, insecure_seed, random};
2use crate::random::WasiRandomCtx;
3use cap_rand::{Rng, distributions::Standard};
4
5impl random::Host for WasiRandomCtx {
6    fn get_random_bytes(&mut self, len: u64) -> anyhow::Result<Vec<u8>> {
7        Ok((&mut self.random)
8            .sample_iter(Standard)
9            .take(len as usize)
10            .collect())
11    }
12
13    fn get_random_u64(&mut self) -> anyhow::Result<u64> {
14        Ok(self.random.sample(Standard))
15    }
16}
17
18impl insecure::Host for WasiRandomCtx {
19    fn get_insecure_random_bytes(&mut self, len: u64) -> anyhow::Result<Vec<u8>> {
20        Ok((&mut self.insecure_random)
21            .sample_iter(Standard)
22            .take(len as usize)
23            .collect())
24    }
25
26    fn get_insecure_random_u64(&mut self) -> anyhow::Result<u64> {
27        Ok(self.insecure_random.sample(Standard))
28    }
29}
30
31impl insecure_seed::Host for WasiRandomCtx {
32    fn insecure_seed(&mut self) -> anyhow::Result<(u64, u64)> {
33        let seed: u128 = self.insecure_random_seed;
34        Ok((seed as u64, (seed >> 64) as u64))
35    }
36}
wasmtime_wasi/p2/host/random.rs

wasmtime_wasi/p2/host/
random.rs
