randomness #1: types update from randomnet (aptos-labs#12106)

* types update from randomnet

* update

* lint

* lint

Cargo.toml

@@ -526,6 +526,7 @@ event-listener = "2.5.3"
 fail = "0.5.0"
 ff = "0.13"
 field_count = "0.1.1"
+fixed = "1.25.1"
 flate2 = "1.0.24"
 futures = "0.3.29"
 futures-channel = "0.3.29"

aptos-move/aptos-vm/src/aptos_vm.rs

@@ -38,13 +38,15 @@ use aptos_types::{
         partitioner::PartitionedTransactions,
     },
     block_metadata::BlockMetadata,
-    block_metadata_ext::BlockMetadataExt,
+    block_metadata_ext::{BlockMetadataExt, BlockMetadataWithRandomness},
     chain_id::ChainId,
     fee_statement::FeeStatement,
+    move_utils::as_move_value::AsMoveValue,
     on_chain_config::{
         new_epoch_event_key, ConfigurationResource, FeatureFlag, Features, OnChainConfig,
         TimedFeatureOverride, TimedFeatures, TimedFeaturesBuilder,
     },
+    randomness::Randomness,
     state_store::{StateView, TStateView},
     transaction::{
         authenticator::AnySignature, signature_verified_transaction::SignatureVerifiedTransaction,
@@ -1701,13 +1703,47 @@ impl AptosVM {
         let mut session =
             self.new_session(resolver, SessionId::block_meta_ext(&block_metadata_ext));
 
-        let args = serialize_values(&block_metadata_ext.get_prologue_ext_move_args());
+        let block_metadata_with_randomness = match block_metadata_ext {
+            BlockMetadataExt::V0(_) => unreachable!(),
+            BlockMetadataExt::V1(v1) => v1,
+        };
+
+        let BlockMetadataWithRandomness {
+            id,
+            epoch,
+            round,
+            proposer,
+            previous_block_votes_bitvec,
+            failed_proposer_indices,
+            timestamp_usecs,
+            randomness,
+        } = block_metadata_with_randomness;
+
+        let args = vec![
+            MoveValue::Signer(AccountAddress::ZERO), // Run as 0x0
+            MoveValue::Address(AccountAddress::from_bytes(id.to_vec()).unwrap()),
+            MoveValue::U64(epoch),
+            MoveValue::U64(round),
+            MoveValue::Address(proposer),
+            failed_proposer_indices
+                .into_iter()
+                .map(|i| i as u64)
+                .collect::<Vec<_>>()
+                .as_move_value(),
+            previous_block_votes_bitvec.as_move_value(),
+            MoveValue::U64(timestamp_usecs),
+            randomness
+                .as_ref()
+                .map(Randomness::randomness_cloned)
+                .as_move_value(),
+        ];
+
         session
             .execute_function_bypass_visibility(
                 &BLOCK_MODULE,
                 BLOCK_PROLOGUE_EXT,
                 vec![],
-                args,
+                serialize_values(&args),
                 &mut gas_meter,
             )
             .map(|_return_vals| ())

types/Cargo.toml

@@ -17,6 +17,7 @@ anyhow = { workspace = true }
 aptos-bitvec = { workspace = true }
 aptos-crypto = { workspace = true }
 aptos-crypto-derive = { workspace = true }
+aptos-dkg = { workspace = true }
 aptos-experimental-runtimes = { workspace = true }
 ark-bn254 = { workspace = true }
 ark-ff = { workspace = true }
@@ -28,6 +29,7 @@ bcs = { workspace = true }
 bytes = { workspace = true }
 chrono = { workspace = true }
 derivative = { workspace = true }
+fixed = { workspace = true }
 hex = { workspace = true }
 itertools = { workspace = true }
 jsonwebtoken = { workspace = true }

types/src/block_metadata_ext.rs

@@ -2,7 +2,7 @@
 
 use crate::{block_metadata::BlockMetadata, randomness::Randomness};
 use aptos_crypto::HashValue;
-use move_core_types::{account_address::AccountAddress, value::MoveValue};
+use move_core_types::account_address::AccountAddress;
 use serde::{Deserialize, Serialize};
 
 /// The extended block metadata.
@@ -21,15 +21,15 @@ pub enum BlockMetadataExt {
 
 #[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
 pub struct BlockMetadataWithRandomness {
-    id: HashValue,
-    epoch: u64,
-    round: u64,
-    proposer: AccountAddress,
+    pub id: HashValue,
+    pub epoch: u64,
+    pub round: u64,
+    pub proposer: AccountAddress,
     #[serde(with = "serde_bytes")]
-    previous_block_votes_bitvec: Vec<u8>,
-    failed_proposer_indices: Vec<u32>,
-    timestamp_usecs: u64,
-    randomness: Option<Randomness>,
+    pub previous_block_votes_bitvec: Vec<u8>,
+    pub failed_proposer_indices: Vec<u32>,
+    pub timestamp_usecs: u64,
+    pub randomness: Option<Randomness>,
 }
 
 impl BlockMetadataExt {
@@ -62,47 +62,6 @@ impl BlockMetadataExt {
         }
     }
 
-    pub fn get_prologue_ext_move_args(self) -> Vec<MoveValue> {
-        let mut ret = vec![
-            MoveValue::Signer(AccountAddress::ONE),
-            MoveValue::Address(AccountAddress::from_bytes(self.id().to_vec()).unwrap()),
-            MoveValue::U64(self.epoch()),
-            MoveValue::U64(self.round()),
-            MoveValue::Address(self.proposer()),
-            MoveValue::Vector(
-                self.failed_proposer_indices()
-                    .iter()
-                    .map(|x| MoveValue::U64((*x) as u64))
-                    .collect(),
-            ),
-            MoveValue::Vector(
-                self.previous_block_votes_bitvec()
-                    .iter()
-                    .map(|x| MoveValue::U8(*x))
-                    .collect(),
-            ),
-            MoveValue::U64(self.timestamp_usecs()),
-        ];
-
-        match self.randomness() {
-            None => {
-                ret.push(MoveValue::Bool(false));
-                ret.push(MoveValue::Vector(vec![]));
-            },
-            Some(randomness) => {
-                let move_bytes = randomness
-                    .randomness()
-                    .iter()
-                    .copied()
-                    .map(MoveValue::U8)
-                    .collect();
-                ret.push(MoveValue::Bool(true));
-                ret.push(MoveValue::Vector(move_bytes));
-            },
-        }
-        ret
-    }
-
     pub fn timestamp_usecs(&self) -> u64 {
         match self {
             BlockMetadataExt::V0(obj) => obj.timestamp_usecs(),

types/src/on_chain_config/aptos_features.rs

@@ -3,9 +3,9 @@
 
 use crate::on_chain_config::OnChainConfig;
 use serde::{Deserialize, Serialize};
-
+use strum_macros::FromRepr;
 /// The feature flags define in the Move source. This must stay aligned with the constants there.
-#[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord)]
+#[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord, FromRepr)]
 #[allow(non_camel_case_types)]
 pub enum FeatureFlag {
     CODE_DEPENDENCY_CHECK = 1,
@@ -115,6 +115,17 @@ impl Features {
         self.features[byte_index] &= !bit_mask;
     }
 
+    pub fn into_flag_vec(self) -> Vec<FeatureFlag> {
+        let Self { features } = self;
+        features
+            .into_iter()
+            .flat_map(|byte| (0..8).map(move |bit_idx| byte & (1 << bit_idx) != 0))
+            .enumerate()
+            .filter(|(_feature_idx, enabled)| *enabled)
+            .map(|(feature_idx, _)| FeatureFlag::from_repr(feature_idx).unwrap())
+            .collect()
+    }
+
     pub fn is_enabled(&self, flag: FeatureFlag) -> bool {
         let val = flag as u64;
         let byte_index = (val / 8) as usize;

types/src/on_chain_config/consensus_config.rs

@@ -237,6 +237,10 @@ impl OnChainConsensusConfig {
             OnChainConsensusConfig::V3 { vtxn, .. } => vtxn.clone(),
         }
     }
+
+    pub fn is_vtxn_enabled(&self) -> bool {
+        self.effective_validator_txn_config().enabled()
+    }
 }
 
 /// This is used when on-chain config is not initialized.

types/src/randomness.rs

@@ -2,10 +2,25 @@
 // Parts of the project are originally copyright © Meta Platforms, Inc.
 // SPDX-License-Identifier: Apache-2.0
 
-use crate::block_info::Round;
+use crate::{block_info::Round, on_chain_config::OnChainConfig};
 use aptos_crypto::HashValue;
+use aptos_crypto_derive::SilentDebug;
+use aptos_dkg::{weighted_vuf, weighted_vuf::traits::WeightedVUF};
+use once_cell::sync::OnceCell;
 use serde::{Deserialize, Serialize};
 
+pub type WVUF = weighted_vuf::pinkas::PinkasWUF;
+pub type WvufPP = <WVUF as WeightedVUF>::PublicParameters;
+pub type PK = <WVUF as WeightedVUF>::PubKey;
+pub type SKShare = <WVUF as WeightedVUF>::SecretKeyShare;
+pub type PKShare = <WVUF as WeightedVUF>::PubKeyShare;
+pub type ASK = <WVUF as WeightedVUF>::AugmentedSecretKeyShare;
+pub type APK = <WVUF as WeightedVUF>::AugmentedPubKeyShare;
+pub type ProofShare = <WVUF as WeightedVUF>::ProofShare;
+pub type Delta = <WVUF as WeightedVUF>::Delta;
+pub type Evaluation = <WVUF as WeightedVUF>::Evaluation;
+pub type Proof = <WVUF as WeightedVUF>::Proof;
+
 #[derive(Clone, Serialize, Deserialize, Debug, PartialEq, Eq, Hash)]
 pub struct RandMetadataToSign {
     pub epoch: u64,
@@ -79,6 +94,10 @@ impl Randomness {
     pub fn randomness(&self) -> &[u8] {
         &self.randomness
     }
+
+    pub fn randomness_cloned(&self) -> Vec<u8> {
+        self.randomness.clone()
+    }
 }
 
 impl Default for Randomness {
@@ -91,3 +110,50 @@ impl Default for Randomness {
         }
     }
 }
+
+#[derive(Clone, Debug, Default, Eq, PartialEq, Serialize, Deserialize)]
+pub struct PerBlockRandomness {
+    pub epoch: u64,
+    pub round: u64,
+    pub seed: Option<Vec<u8>>,
+}
+
+impl OnChainConfig for PerBlockRandomness {
+    const MODULE_IDENTIFIER: &'static str = "randomness";
+    const TYPE_IDENTIFIER: &'static str = "PerBlockRandomness";
+}
+
+#[derive(Clone, SilentDebug)]
+pub struct RandKeys {
+    // augmented secret / public key share of this validator, obtained from the DKG transcript of last epoch
+    pub ask: ASK,
+    pub apk: APK,
+    // certified augmented public key share of all validators,
+    // obtained from all validators in the new epoch,
+    // which necessary for verifying randomness shares
+    pub certified_apks: Vec<OnceCell<APK>>,
+    // public key share of all validators, obtained from the DKG transcript of last epoch
+    pub pk_shares: Vec<PKShare>,
+}
+
+impl RandKeys {
+    pub fn new(ask: ASK, apk: APK, pk_shares: Vec<PKShare>, num_validators: usize) -> Self {
+        let certified_apks = vec![OnceCell::new(); num_validators];
+
+        Self {
+            ask,
+            apk,
+            certified_apks,
+            pk_shares,
+        }
+    }
+
+    pub fn add_certified_apk(&self, index: usize, apk: APK) -> anyhow::Result<()> {
+        assert!(index < self.certified_apks.len());
+        if self.certified_apks[index].get().is_some() {
+            return Ok(());
+        }
+        self.certified_apks[index].set(apk).unwrap();
+        Ok(())
+    }
+}

types/src/transaction/mod.rs

@@ -1817,7 +1817,14 @@ impl Transaction {
 
     pub fn try_as_block_metadata(&self) -> Option<&BlockMetadata> {
         match self {
-            Transaction::BlockMetadata(v1) => Some(v1),
+            Transaction::BlockMetadata(bm) => Some(bm),
+            _ => None,
+        }
+    }
+
+    pub fn try_as_block_metadata_ext(&self) -> Option<&BlockMetadataExt> {
+        match self {
+            Transaction::BlockMetadataExt(bme) => Some(bme),
             _ => None,
         }
     }