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Squirrel
be8e626806
We currently use a bit of a hack in `.cargo/config` to make sure that clippy isn't too annoying by specifying the list of lints. There is now a stable way to define lints for a workspace. The only down side is that every crate seems to have to opt into this so there's a *few* files modified in this PR. Dependencies: - [x] PR that upgrades CI to use rust 1.74 is merged. --------- Co-authored-by: joe petrowski <25483142+joepetrowski@users.noreply.github.com> Co-authored-by: Branislav Kontur <bkontur@gmail.com> Co-authored-by: Liam Aharon <liam.aharon@hotmail.com>
DO NOT USE IN PRODUCTION
The produced values do not fulfill the cryptographic requirements for random numbers. Should not be used for high-stake production use-cases.
Randomness Module
The Randomness Collective Flip module provides a
random
function that generates low-influence random values based on the block hashes from the previous 81 blocks.
Low-influence randomness can be useful when defending against relatively weak adversaries. Using this pallet as a
randomness source is advisable primarily in low-security situations like testing.
Public Functions
See the
Module
struct for details of publicly available functions.
Usage
Prerequisites
Import the Randomness Collective Flip module and derive your module's configuration trait from the system trait.
Example - Get random seed for the current block
use frame_support::traits::Randomness;
#[frame_support::pallet]
pub mod pallet {
use super::*;
use frame_support::pallet_prelude::*;
use frame_system::pallet_prelude::*;
#[pallet::pallet]
pub struct Pallet<T>(_);
#[pallet::config]
pub trait Config: frame_system::Config + pallet_insecure_randomness_collective_flip::Config {}
#[pallet::call]
impl<T: Config> Pallet<T> {
#[pallet::weight(0)]
pub fn random_module_example(origin: OriginFor<T>) -> DispatchResult {
let _random_value = <pallet_insecure_randomness_collective_flip::Pallet<T>>::random(&b"my context"[..]);
Ok(())
}
}
}
License: Apache-2.0