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Struct,
Field,
PublicKey,
Signature,
ZkProgram,
Poseidon,
SelfProof,
UInt32,
Experimental,
DynamicProof,
FeatureFlags,
Void,
Bool,
} from "o1js";
import { fieldFromString, Storage, PublicKeyOption } from "../contracts";
import { createIpfsURL, deserializeIndexedMerkleMap } from "zkcloudworker";
import { ValidatorsListData } from "./upgrade";
export {
ValidatorsList,
UpgradeAuthorityDatabase,
ValidatorsState,
ValidatorsDecision,
ValidatorDecisionType,
ValidatorsDecisionState,
ValidatorsVoting,
ValidatorsVotingProof,
ValidatorsVotingNativeProof,
UpgradeDatabaseState,
UpgradeDatabaseStatePacked,
ChainId,
ValidatorsListData,
checkValidatorsList,
};
const { IndexedMerkleMap } = Experimental;
type IndexedMerkleMap = Experimental.IndexedMerkleMap;
const VALIDATORS_LIST_HEIGHT = 10;
const UPGRADE_AUTHORITY_DATABASE_HEIGHT = 20;
/**
* The `ValidatorsList` is an indexed Merkle map used to store the list of validators.
*/
class ValidatorsList extends IndexedMerkleMap(VALIDATORS_LIST_HEIGHT) {}
/**
* The `UpgradeAuthorityDatabase` is an indexed Merkle map used to manage upgrade proposals.
*/
class UpgradeAuthorityDatabase extends IndexedMerkleMap(
UPGRADE_AUTHORITY_DATABASE_HEIGHT
) {}
/** Chain IDs following Auro Wallet naming conventions. */
const ChainId = {
"mina:mainnet": fieldFromString("mina:mainnet"),
"mina:devnet": fieldFromString("mina:devnet"),
"zeko:mainnet": fieldFromString("zeko:mainnet"),
"zeko:devnet": fieldFromString("zeko:devnet"),
};
type ChainId = keyof typeof ChainId;
/** Validator decision types for upgrade proposals. */
const ValidatorDecisionType = {
updateDatabase: fieldFromString("updateDatabase"),
updateValidatorsList: fieldFromString("updateValidatorsList"),
} as const;
type ValidatorDecisionType = keyof typeof ValidatorDecisionType;
/**
* Represents the state of the validators.
*/
class ValidatorsState extends Struct({
/** Chain ID (e.g., 'mina:mainnet') */
chainId: Field,
/** Merkle root of the ValidatorsList */
root: Field,
/** Sum of the hashes of validators' public keys */
hashSum: Field,
/** Number of validators */
count: UInt32,
}) {
/**
* Asserts that two `ValidatorsState` instances are equal.
* @param a First `ValidatorsState` instance.
* @param b Second `ValidatorsState` instance.
*/
static assertEquals(a: ValidatorsState, b: ValidatorsState) {
a.chainId.assertEquals(b.chainId);
a.root.assertEquals(b.root);
a.hashSum.assertEquals(b.hashSum);
a.count.assertEquals(b.count);
}
/**
* Computes the hash of the validators state.
* @returns Hash of the current state.
*/
hash() {
return Poseidon.hashPacked(ValidatorsState, this);
}
/**
* Returns an empty `ValidatorsState`.
* @returns An empty `ValidatorsState` instance.
*/
static empty() {
return new ValidatorsState({
chainId: Field(0),
root: Field(0),
hashSum: Field(0),
count: UInt32.zero,
});
}
}
/**
* Represents the packed state of the upgrade database.
*/
class UpgradeDatabaseStatePacked extends Struct({
/** Root of the UpgradeAuthority database */
root: Field,
/** Storage information (e.g., IPFS hash) */
storage: Storage,
/** X-coordinate of the next upgrade authority's public key */
nextUpgradeAuthorityX: Field,
/** Packed data containing version, validFrom, and flags */
data: Field,
}) {}
/**
* Represents the state of the upgrade database.
*/
class UpgradeDatabaseState extends Struct({
/** Root of the UpgradeAuthority database */
root: Field,
/** Storage information (e.g., IPFS hash) */
storage: Storage,
/** Optional public key of the next upgrade authority */
nextUpgradeAuthority: PublicKeyOption,
/** Version of the UpgradeAuthorityDatabase */
version: UInt32,
/** Slot when the UpgradeAuthority is valid from */
validFrom: UInt32,
}) {
/**
* Asserts that two `UpgradeDatabaseState` instances are equal.
* @param a First `UpgradeDatabaseState` instance.
* @param b Second `UpgradeDatabaseState` instance.
*/
static assertEquals(a: UpgradeDatabaseState, b: UpgradeDatabaseState) {
a.root.assertEquals(b.root);
Storage.assertEquals(a.storage, b.storage);
a.nextUpgradeAuthority.value.assertEquals(b.nextUpgradeAuthority.value);
a.nextUpgradeAuthority.isSome.assertEquals(b.nextUpgradeAuthority.isSome);
a.version.assertEquals(b.version);
}
/**
* Returns an empty `UpgradeDatabaseState`.
* @returns An empty `UpgradeDatabaseState` instance.
*/
static empty() {
return new UpgradeDatabaseState({
root: new UpgradeAuthorityDatabase().root,
storage: Storage.empty(),
nextUpgradeAuthority: PublicKeyOption.none(),
version: UInt32.zero,
validFrom: UInt32.MAXINT(),
});
}
/**
* Packs the `UpgradeDatabaseState` into a `UpgradeDatabaseStatePacked`.
* @returns A packed representation of the upgrade database state.
*/
pack(): UpgradeDatabaseStatePacked {
const nextUpgradeAuthorityX = this.nextUpgradeAuthority.value.x;
const data = Field.fromBits([
...this.version.value.toBits(32),
...this.validFrom.value.toBits(32),
this.nextUpgradeAuthority.value.isOdd,
this.nextUpgradeAuthority.isSome,
]);
return new UpgradeDatabaseStatePacked({
root: this.root,
storage: this.storage,
nextUpgradeAuthorityX,
data,
});
}
/**
* Unpacks a `UpgradeDatabaseStatePacked` into a `UpgradeDatabaseState`.
* @param packed The packed upgrade database state.
* @returns An unpacked `UpgradeDatabaseState` instance.
*/
static unpack(packed: UpgradeDatabaseStatePacked): UpgradeDatabaseState {
const bits = packed.data.toBits(66);
const versionBits = bits.slice(0, 32);
const validFromBits = bits.slice(32, 64);
const isOddBit = bits[64];
const isSomeBit = bits[65];
const version = UInt32.Unsafe.fromField(Field.fromBits(versionBits));
const validFrom = UInt32.Unsafe.fromField(Field.fromBits(validFromBits));
const nextUpgradeAuthority = PublicKeyOption.from(
PublicKey.from({ x: packed.nextUpgradeAuthorityX, isOdd: isOddBit })
);
nextUpgradeAuthority.isSome = isSomeBit;
return new UpgradeDatabaseState({
root: packed.root,
storage: packed.storage,
nextUpgradeAuthority,
version,
validFrom,
});
}
}
/**
* Represents a decision made by the validators.
*/
class ValidatorsDecision extends Struct({
/** Type of decision (e.g., 'updateDatabase') */
decisionType: Field,
/** UpgradeAuthority contract address */
contractAddress: PublicKey,
/** Chain ID */
chainId: Field,
/** Current validators state */
validators: ValidatorsState,
/** Current upgrade database state */
upgradeDatabase: UpgradeDatabaseState,
/** Proposed update to validators state */
updateValidatorsList: ValidatorsState,
/** Slot when decision expires */
expiry: UInt32,
}) {
/**
* Asserts that two `ValidatorsDecision` instances are equal.
* @param a First `ValidatorsDecision` instance.
* @param b Second `ValidatorsDecision` instance.
*/
static assertEquals(a: ValidatorsDecision, b: ValidatorsDecision) {
a.decisionType.assertEquals(b.decisionType);
a.contractAddress.assertEquals(b.contractAddress);
a.chainId.assertEquals(b.chainId);
ValidatorsState.assertEquals(a.validators, b.validators);
UpgradeDatabaseState.assertEquals(a.upgradeDatabase, b.upgradeDatabase);
a.expiry.assertEquals(b.expiry);
}
}
/**
* Represents the state of a validators decision during the voting process.
*/
class ValidatorsDecisionState extends Struct({
/** The validators' decision */
decision: ValidatorsDecision,
/** Sum of the hashes of validators who have voted */
hashSum: Field,
/** Count of votes in favor */
count: UInt32,
}) {
/**
* Records a vote in favor of the decision by the given validator.
* @param decision The validators' decision.
* @param validatorAddress The public key of the validator.
* @param validatorsList The ValidatorsList.
* @param signature The signature of the validator.
* @returns A new `ValidatorsDecisionState` reflecting the vote.
*/
static vote(
decision: ValidatorsDecision,
validatorAddress: PublicKey,
validatorsList: ValidatorsList,
signature: Signature
) {
const hash = Poseidon.hashPacked(PublicKey, validatorAddress);
validatorsList
.get(hash)
.assertBool("Wrong ValidatorsList format")
.assertTrue("Validator doesn't have authority to sign");
signature
.verify(validatorAddress, ValidatorsDecision.toFields(decision))
.assertTrue("Wrong validator signature");
decision.validators.root.assertEquals(validatorsList.root);
return new ValidatorsDecisionState({
decision,
count: UInt32.from(1), // count as vote for the decision
hashSum: hash,
});
}
/**
* Records an abstention or vote against the decision by the given validator.
* @param decision The validators' decision.
* @param validatorAddress The public key of the validator.
* @param validatorsList The ValidatorsList.
* @returns A new `ValidatorsDecisionState` reflecting the abstention.
*/
static abstain(
decision: ValidatorsDecision,
validatorAddress: PublicKey,
validatorsList: ValidatorsList
// We do not require the signature if the vote is not for the decision
) {
const hash = Poseidon.hashPacked(PublicKey, validatorAddress);
validatorsList
.get(hash)
.assertBool("Wrong ValidatorsList format")
.assertTrue("Validator doesn't have authority to sign");
decision.validators.root.assertEquals(validatorsList.root);
return new ValidatorsDecisionState({
decision,
count: UInt32.zero, // count as abstain or against
hashSum: hash,
});
}
/**
* Merges two `ValidatorsDecisionState` instances.
* @param state1 The first decision state.
* @param state2 The second decision state.
* @returns A new `ValidatorsDecisionState` representing the combined state.
*/
static merge(
state1: ValidatorsDecisionState,
state2: ValidatorsDecisionState
) {
ValidatorsDecision.assertEquals(state1.decision, state2.decision);
return new ValidatorsDecisionState({
decision: state1.decision,
count: state1.count.add(state2.count),
hashSum: state1.hashSum.add(state2.hashSum),
});
}
/**
* Asserts that two `ValidatorsDecisionState` instances are equal.
* @param a First `ValidatorsDecisionState` instance.
* @param b Second `ValidatorsDecisionState` instance.
*/
static assertEquals(a: ValidatorsDecisionState, b: ValidatorsDecisionState) {
ValidatorsDecision.assertEquals(a.decision, b.decision);
a.count.assertEquals(b.count);
a.hashSum.assertEquals(b.hashSum);
}
}
/**
* The `ValidatorsVoting` ZkProgram implements the voting logic for validators.
*/
const ValidatorsVoting = ZkProgram({
name: "ValidatorsVoting",
publicInput: ValidatorsDecisionState,
methods: {
/**
* Records a vote in favor of a decision.
*/
vote: {
privateInputs: [ValidatorsDecision, PublicKey, ValidatorsList, Signature],
async method(
state: ValidatorsDecisionState,
decision: ValidatorsDecision,
validatorAddress: PublicKey,
validatorsList: ValidatorsList,
signature: Signature
) {
const calculatedState = ValidatorsDecisionState.vote(
decision,
validatorAddress,
validatorsList,
signature
);
ValidatorsDecisionState.assertEquals(state, calculatedState);
},
},
/**
* Records an abstention or vote against a decision.
*/
abstain: {
privateInputs: [ValidatorsDecision, PublicKey, ValidatorsList],
async method(
state: ValidatorsDecisionState,
decision: ValidatorsDecision,
validatorAddress: PublicKey,
validatorsList: ValidatorsList
) {
const calculatedState = ValidatorsDecisionState.abstain(
decision,
validatorAddress,
validatorsList
);
ValidatorsDecisionState.assertEquals(state, calculatedState);
},
},
/**
* Merges two `ValidatorsDecisionState` proofs.
*/
merge: {
privateInputs: [SelfProof, SelfProof],
async method(
state: ValidatorsDecisionState,
proof1: SelfProof<ValidatorsDecisionState, void>,
proof2: SelfProof<ValidatorsDecisionState, void>
) {
proof1.verify();
proof2.verify();
const calculatedState = ValidatorsDecisionState.merge(
proof1.publicInput,
proof2.publicInput
);
ValidatorsDecisionState.assertEquals(state, calculatedState);
},
},
},
});
/** Proof classes for the `ValidatorsVoting` ZkProgram. */
class ValidatorsVotingNativeProof extends ZkProgram.Proof(ValidatorsVoting) {}
class ValidatorsVotingProof extends DynamicProof<
ValidatorsDecisionState,
Void
> {
static publicInputType = ValidatorsDecisionState;
static publicOutputType = Void;
static maxProofsVerified = 2 as const;
static featureFlags = FeatureFlags.allMaybe;
}
/**
* Checks the validators list against the provided storage.
* @param params Object containing validators state and storage.
* @returns An object containing the `ValidatorsList` and `ValidatorsListData`.
*/
async function checkValidatorsList(params: {
validators?: ValidatorsState;
storage: Storage;
}): Promise<{ map: ValidatorsList; data: ValidatorsListData }> {
const { validators, storage } = params;
const data = (await (
await fetch(createIpfsURL({ hash: storage.toString() }))
).json()) as unknown as ValidatorsListData;
const validatorsList = new ValidatorsList();
let hashSum = Field(0);
let count = 0;
for (let i = 0; i < data.validators.length; i++) {
const publicKey = PublicKey.fromBase58(data.validators[i].publicKey);
const key = Poseidon.hashPacked(PublicKey, publicKey);
validatorsList.set(
key,
Field(Bool(data.validators[i].authorizedToVote).value)
);
count++;
hashSum = hashSum.add(key);
}
Iif (data.hashSum !== hashSum.toJSON()) {
throw new Error("Invalid validators list hash sum");
}
const map = deserializeIndexedMerkleMap({
serializedIndexedMap: data.map,
type: ValidatorsList,
});
Iif (!map) {
throw new Error("Invalid validators list");
}
Iif (map.root.equals(validatorsList.root).toBoolean() === false) {
throw new Error("Invalid validators list root");
}
if (validators) {
Iif (data.validatorsCount !== Number(validators.count.toBigint())) {
throw new Error("Invalid validators list count");
}
Iif (data.root !== validators.root.toJSON()) {
throw new Error("Invalid validators list root");
}
Iif (hashSum.equals(validators.hashSum).toBoolean() === false) {
throw new Error("Invalid validators list hash sum");
}
Iif (Number(validators.count.toBigint()) > count) {
throw new Error("Invalid validators list count");
}
}
return { map, data };
}
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