Merge pull request #293 from michaelsproul/operation-pool

Implement Operation Pool

eth2/utils/bls/src/aggregate_public_key.rs

@@ -1,7 +1,7 @@
 use super::PublicKey;
 use bls_aggregates::AggregatePublicKey as RawAggregatePublicKey;
 
-/// A single BLS signature.
+/// A BLS aggregate public key.
 ///
 /// This struct is a wrapper upon a base type and provides helper functions (e.g., SSZ
 /// serialization).
@@ -17,7 +17,7 @@ impl AggregatePublicKey {
         self.0.add(public_key.as_raw())
     }
 
-    /// Returns the underlying signature.
+    /// Returns the underlying public key.
     pub fn as_raw(&self) -> &RawAggregatePublicKey {
         &self.0
     }

eth2/utils/bls/src/aggregate_signature.rs

@@ -36,6 +36,11 @@ impl AggregateSignature {
         }
     }
 
+    /// Add (aggregate) another `AggregateSignature`.
+    pub fn add_aggregate(&mut self, agg_signature: &AggregateSignature) {
+        self.0.add_aggregate(&agg_signature.0)
+    }
+
     /// Verify the `AggregateSignature` against an `AggregatePublicKey`.
     ///
     /// Only returns `true` if the set of keys in the `AggregatePublicKey` match the set of keys

eth2/utils/bls/src/fake_aggregate_signature.rs

@@ -31,6 +31,11 @@ impl FakeAggregateSignature {
         // Do nothing.
     }
 
+    /// Does glorious nothing.
+    pub fn add_aggregate(&mut self, _agg_sig: &FakeAggregateSignature) {
+        // Do nothing.
+    }
+
     /// _Always_ returns `true`.
     pub fn verify(
         &self,