Function get_random_seed 

pub async fn get_random_seed() -> Option<StdRng>

Initializes a StdRng using 32 bytes of randomness retrieved from the IC management canister.

Behavior

This function internally calls raw_rand() to obtain 32 bytes of randomness from the management canister and uses them as a seed to create a deterministic random number generator (StdRng).

If randomness cannot be retrieved (e.g., due to a call failure), the function returns None instead of blocking initialization. This allows the caller to proceed with limited functionality.

Returns

• Some(StdRng) if randomness was successfully fetched.
• None if the management canister call failed.

Example

if let Some(mut rng) = get_random_seed().await {
    let value: u64 = rng.gen();
    println!("Random value: {}", value);
}