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impl Randomness trait for Babe and remove unused RandomBeacon trait (#4886)

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* impl Randomness trait for Babe and remove unused RandomBeacon trait

* bump runtime version
This commit is contained in:
Robert Habermeier
2020-02-11 11:07:14 +01:00
committed by GitHub
parent 0d45d12e3f
commit ea69238d03
4 changed files with 14 additions and 23 deletions
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substrate/primitives/runtime/src/traits.rs
-16
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@@ -476,22 +476,6 @@ sp_core::impl_maybe_marker!(
trait MaybeMallocSizeOf: parity_util_mem::MallocSizeOf;
);
/// A type that provides a randomness beacon.
pub trait RandomnessBeacon {
/// Returns 32 bytes of random data. The output will change eventually, but
/// is not guaranteed to be different between any two calls.
///
/// # Security
///
/// This MUST NOT be used for gambling, as it can be influenced by a
/// malicious validator in the short term. It MAY be used in many
/// cryptographic protocols, however, so long as one remembers that this
/// (like everything else on-chain) is public. For example, it can be
/// used where a number is needed that cannot have been chosen by an
/// adversary, for purposes such as public-coin zero-knowledge proofs.
fn random() -> [u8; 32];
}
/// A type that can be used in runtime structures.
pub trait Member: Send + Sync + Sized + Debug + Eq + PartialEq + Clone + 'static {}
impl<T: Send + Sync + Sized + Debug + Eq + PartialEq + Clone + 'static> Member for T {}