《禁闭岛》与零知识证明：记忆上链与身份验证

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

import "@openzeppelin/contracts/access/AccessControl.sol";
import "@openzeppelin/contracts/utils/ReentrancyGuard.sol";
import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";

contract MemoryIdentity is AccessControl, ReentrancyGuard {
    using ECDSA for bytes32;

    bytes32 public constant IDENTITY_ISSUER_ROLE = keccak256("IDENTITY_ISSUER_ROLE");
    bytes32 public constant VERIFIER_ROLE = keccak256("VERIFIER_ROLE");
    bytes32 public constant RECOVERY_AGENT_ROLE = keccak256("RECOVERY_AGENT_ROLE");

    enum IdentityStatus {
        UNVERIFIED,
        PENDING,
        VERIFIED,
        SUSPENDED,
        REVOKED,
        RECOVERING
    }

    enum MemoryType {
        BIOMETRIC,
        SOCIAL,
        BEHAVIORAL,
        KNOWLEDGE,
        BIographic
    }

    enum VerificationMethod {
        DIGITAL_SIGNATURE,
        BIOMETRIC_HASH,
        KNOWLEDGE_PROOF,
        SOCIAL_RECOVERY,
        HARDWARE_TOKEN
    }

    struct Identity {
        address identityAddress;
        bytes32 identityHash;
        bytes32 commitmentHash;     // Pedersen commitment to identity data
        IdentityStatus status;
        uint256 createdAt;
        uint256 lastVerified;
        uint256 recoveryCount;
        bool isActive;
        string metadataURI;
        address[] guardians;
        uint256 guardianThreshold;
    }

    struct MemoryRecord {
        uint256 memoryId;
        address identityAddress;
        bytes32 memoryHash;
        MemoryType memoryType;
        bytes32 nullifier;          // Prevent double-use
        uint256 timestamp;
        bool isEncrypted;
        bool isVerified;
        uint256 verificationCount;
    }

    struct ZKProof {
        bytes32 proofId;
        address identityAddress;
        bytes32 publicSignals;
        bytes proof;
        VerificationMethod method;
        uint256 timestamp;
        bool isValid;
        uint256 expiration;
    }

    struct RecoveryRequest {
        uint256 requestId;
        address identityAddress;
        address[] approvers;
        uint256 approvalsNeeded;
        uint256 approvalsReceived;
        uint256 expiryTime;
        bool isExecuted;
        bytes32 newCommitment;
    }

    mapping(address => Identity) public identities;
    mapping(uint256 => MemoryRecord) public memories;
    mapping(bytes32 => ZKProof) public proofs;
    mapping(uint256 => RecoveryRequest) public recoveryRequests;
    mapping(address => uint256[]) public identityMemories;
    mapping(bytes32 => bool) public usedNullifiers;

    uint256 private _memoryCounter;
    uint256 private _proofCounter;
    uint256 private _recoveryCounter;
    uint256 public constant MAX_GUARDIANS = 10;
    uint256 public constant PROOF_EXPIRY = 365 days;
    uint256 public constant RECOVERY_DELAY = 3 days;

    event IdentityCreated(
        address indexed identityAddress,
        bytes32 identityHash,
        bytes32 commitmentHash
    );

    event MemoryRecorded(
        uint256 indexed memoryId,
        address indexed identityAddress,
        MemoryType memoryType,
        bytes32 memoryHash
    );

    event ProofGenerated(
        bytes32 indexed proofId,
        address indexed identityAddress,
        VerificationMethod method
    );

    event ProofVerified(
        bytes32 indexed proofId,
        bool isValid
    );

    event RecoveryRequested(
        uint256 indexed requestId,
        address indexed identityAddress
    );

    event RecoveryExecuted(
        address indexed identityAddress,
        bytes32 newCommitment
    );

    modifier onlyIdentityOwner(address identityAddr) {
        require(msg.sender == identityAddr, "Not identity owner");
        _;
    }

    constructor() {
        _grantRole(DEFAULT_ADMIN_ROLE, msg.sender);
        _grantRole(IDENTITY_ISSUER_ROLE, msg.sender);
        _grantRole(VERIFIER_ROLE, msg.sender);
        _grantRole(RECOVERY_AGENT_ROLE, msg.sender);
    }

    function createIdentity(
        bytes32 _identityHash,
        bytes32 _commitmentHash,
        string memory _metadataURI,
        address[] memory _guardians,
        uint256 _guardianThreshold
    ) external returns (address) {
        require(identities[msg.sender].status == IdentityStatus.UNVERIFIED || 
                identities[msg.sender].status == IdentityStatus.REVOKED, "Identity exists");
        require(_guardians.length <= MAX_GUARDIANS, "Too many guardians");
        require(_guardianThreshold > 0 && _guardianThreshold <= _guardians.length, "Invalid threshold");

        identities[msg.sender] = Identity({
            identityAddress: msg.sender,
            identityHash: _identityHash,
            commitmentHash: _commitmentHash,
            status: IdentityStatus.PENDING,
            createdAt: block.timestamp,
            lastVerified: 0,
            recoveryCount: 0,
            isActive: true,
            metadataURI: _metadataURI,
            guardians: _guardians,
            guardianThreshold: _guardianThreshold
        });

        emit IdentityCreated(msg.sender, _identityHash, _commitmentHash);
        return msg.sender;
    }

    function verifyIdentity(
        address _identityAddress,
        bytes32 _publicSignals,
        bytes calldata _proof,
        VerificationMethod _method
    ) external onlyRole(VERIFIER_ROLE) returns (bytes32) {
        Identity storage identity = identities[_identityAddress];
        require(identity.status == IdentityStatus.PENDING || 
                identity.status == IdentityStatus.VERIFIED, "Invalid status");

        _proofCounter++;
        bytes32 proofId = keccak256(abi.encodePacked(_proofCounter, _identityAddress, block.timestamp));

        proofs[proofId] = ZKProof({
            proofId: proofId,
            identityAddress: _identityAddress,
            publicSignals: _publicSignals,
            proof: _proof,
            method: _method,
            timestamp: block.timestamp,
            isValid: true,
            expiration: block.timestamp + PROOF_EXPIRY
        });

        if (identity.status == IdentityStatus.PENDING) {
            identity.status = IdentityStatus.VERIFIED;
            identity.lastVerified = block.timestamp;
        }

        emit ProofGenerated(proofId, _identityAddress, _method);
        return proofId;
    }

    function recordMemory(
        bytes32 _memoryHash,
        MemoryType _memoryType,
        bool _isEncrypted
    ) external returns (uint256) {
        Identity storage identity = identities[msg.sender];
        require(identity.status == IdentityStatus.VERIFIED, "Identity not verified");

        bytes32 nullifier = keccak256(abi.encodePacked(msg.sender, _memoryHash, block.timestamp));
        require(!usedNullifiers[nullifier], "Nullifier already used");

        _memoryCounter++;
        uint256 memoryId = _memoryCounter;

        memories[memoryId] = MemoryRecord({
            memoryId: memoryId,
            identityAddress: msg.sender,
            memoryHash: _memoryHash,
            memoryType: _memoryType,
            nullifier: nullifier,
            timestamp: block.timestamp,
            isEncrypted: _isEncrypted,
            isVerified: false,
            verificationCount: 0
        });

        usedNullifiers[nullifier] = true;
        identityMemories[msg.sender].push(memoryId);

        emit MemoryRecorded(memoryId, msg.sender, _memoryType, _memoryHash);
        return memoryId;
    }

    function verifyMemory(
        uint256 _memoryId,
        bytes32 _proof
    ) external onlyRole(VERIFIER_ROLE) {
        MemoryRecord storage memory_ = memories[_memoryId];
        require(!memory_.isVerified, "Already verified");

        memory_.isVerified = true;
        memory_.verificationCount++;
    }

    function requestRecovery(
        bytes32 _newCommitment
    ) external returns (uint256) {
        Identity storage identity = identities[msg.sender];
        require(identity.status == IdentityStatus.VERIFIED || 
                identity.status == IdentityStatus.SUSPENDED, "Invalid status");
        require(identity.guardians.length > 0, "No guardians set");

        identity.status = IdentityStatus.RECOVERING;

        _recoveryCounter++;
        uint256 requestId = _recoveryCounter;

        recoveryRequests[requestId] = RecoveryRequest({
            requestId: requestId,
            identityAddress: msg.sender,
            approvers: new address[](0),
            approvalsNeeded: identity.guardianThreshold,
            approvalsReceived: 0,
            expiryTime: block.timestamp + RECOVERY_DELAY,
            isExecuted: false,
            newCommitment: _newCommitment
        });

        emit RecoveryRequested(requestId, msg.sender);
        return requestId;
    }

    function approveRecovery(
        uint256 _requestId
    ) external {
        RecoveryRequest storage request = recoveryRequests[_requestId];
        require(!request.isExecuted, "Already executed");
        require(block.timestamp < request.expiryTime, "Request expired");

        Identity storage identity = identities[request.identityAddress];
        bool isGuardian = false;
        for (uint256 i = 0; i < identity.guardians.length; i++) {
            if (identity.guardians[i] == msg.sender) {
                isGuardian = true;
                break;
            }
        }
        require(isGuardian, "Not a guardian");

        request.approvers.push(msg.sender);
        request.approvalsReceived++;

        if (request.approvalsReceived >= request.approvalsNeeded) {
            identity.commitmentHash = request.newCommitment;
            identity.status = IdentityStatus.VERIFIED;
            identity.recoveryCount++;
            request.isExecuted = true;

            emit RecoveryExecuted(request.identityAddress, request.newCommitment);
        }
    }

    function suspendIdentity(
        address _identityAddress
    ) external onlyRole(IDENTITY_ISSUER_ROLE) {
        Identity storage identity = identities[_identityAddress];
        require(identity.status == IdentityStatus.VERIFIED, "Not verified");

        identity.status = IdentityStatus.SUSPENDED;
    }

    function revokeIdentity(
        address _identityAddress
    ) external onlyRole(IDENTITY_ISSUER_ROLE) {
        Identity storage identity = identities[_identityAddress];
        require(identity.status != IdentityStatus.REVOKED, "Already revoked");

        identity.status = IdentityStatus.REVOKED;
        identity.isActive = false;
    }

    function getIdentityMemories(
        address _identityAddress
    ) external view returns (uint256[] memory) {
        return identityMemories[_identityAddress];
    }

    function getIdentityInfo(
        address _identityAddress
    ) external view returns (Identity memory) {
        require(identities[_identityAddress].status != IdentityStatus.UNVERIFIED, "Identity not found");
        return identities[_identityAddress];
    }
}

import hashlib
import json
import time
import random
from dataclasses import dataclass
from typing import Dict, List, Optional, Tuple, Set
from enum import Enum

class IdentityStatus(Enum):
    UNVERIFIED = "unverified"
    PENDING = "pending"
    VERIFIED = "verified"
    SUSPENDED = "suspended"
    REVOKED = "revoked"
    RECOVERING = "recovering"

class MemoryType(Enum):
    BIOMETRIC = "biometric"
    SOCIAL = "social"
    BEHAVIORAL = "behavioral"
    KNOWLEDGE = "knowledge"
    BIOGRAPHIC = "biographic"

class ProofStatus(Enum):
    PENDING = "pending"
    GENERATED = "generated"
    VERIFIED = "verified"
    EXPIRED = "expired"
    REJECTED = "rejected"

@dataclass
class Identity:
    address: str
    identity_hash: str
    commitment: str
    status: IdentityStatus
    created_at: int
    last_verified: int
    guardians: List[str]
    guardian_threshold: int
    metadata_uri: str

@dataclass
class Memory:
    memory_id: int
    identity_address: str
    memory_hash: str
    memory_type: MemoryType
    nullifier: str
    timestamp: int
    is_encrypted: bool
    is_verified: bool

@dataclass
class ZKProof:
    proof_id: str
    identity_address: str
    public_signals: str
    proof_data: str
    method: str
    timestamp: int
    status: ProofStatus
    expiration: int

@dataclass
class RecoveryRequest:
    request_id: int
    identity_address: str
    new_commitment: str
    approvals_needed: int
    approvals_received: int
    approvers: List[str]
    expiry_time: int
    is_executed: bool


class ZeroKnowledgeMemory:
    """
    零知识记忆系统：模拟《禁闭岛》中的记忆验证与身份恢复
    """

    def __init__(self):
        self.identities: Dict[str, Identity] = {}
        self.memories: Dict[int, Memory] = {}
        self.proofs: Dict[str, ZKProof] = {}
        self.recovery_requests: Dict[int, RecoveryRequest] = {}
        self.identity_memories: Dict[str, List[int]] = {}
        self.used_nullifiers: Set[str] = set()
        self.memory_counter = 0
        self.recovery_counter = 0

    def _hash(self, *args) -> str:
        data = ":".join(str(a) for a in args)
        return hashlib.sha256(data.encode()).hexdigest()

    def create_identity(
        self,
        address: str,
        secret_data: str,
        guardians: List[str] = None,
        guardian_threshold: int = 2
    ) -> str:
        if address in self.identities:
            identity = self.identities[address]
            if identity.status not in [IdentityStatus.UNVERIFIED, IdentityStatus.REVOKED]:
                raise ValueError("身份已存在")

        # 创建身份承诺（哈希）
        identity_hash = self._hash(address, secret_data, "identity_v1")
        commitment = self._hash(identity_hash, str(time.time()))

        identity = Identity(
            address=address,
            identity_hash=identity_hash,
            commitment=commitment,
            status=IdentityStatus.PENDING,
            created_at=int(time.time()),
            last_verified=0,
            guardians=guardians or [],
            guardian_threshold=min(guardian_threshold, len(guardians or [])),
            metadata_uri=f"ipfs://identity/{commitment[:16]}"
        )

        self.identities[address] = identity

        print(f"[身份创建] {address[:8]}")
        print(f"  身份哈希: {identity_hash[:16]}...")
        print(f"  承诺: {commitment[:16]}...")
        print(f"  守护者: {len(identity.guardians)} 人, 阈值: {identity.guardian_threshold}")

        return address

    def verify_identity_zk(
        self,
        address: str,
        secret_data: str,
        public_signal: str = "verify_identity"
    ) -> Tuple[str, bool]:
        if address not in self.identities:
            raise ValueError(f"身份 {address[:8]} 不存在")

        identity = self.identities[address]

        # 零知识验证：证明者知道secret_data，但不泄露它
        # 在真实系统中，这里是zk-SNARKs/STARKs验证
        # 在模拟中，我们使用哈希比较
        expected_hash = self._hash(address, secret_data, "identity_v1")

        if expected_hash == identity.identity_hash:
            # 验证通过
            proof_id = self._hash("proof", address, str(time.time()), "zk_verify")

            proof = ZKProof(
                proof_id=proof_id,
                identity_address=address,
                public_signals=public_signal,
                proof_data="zk_proof_data_placeholder",
                method="zk_snark",
                timestamp=int(time.time()),
                status=ProofStatus.VERIFIED,
                expiration=int(time.time()) + 365 * 86400
            )

            self.proofs[proof_id] = proof

            if identity.status == IdentityStatus.PENDING:
                identity.status = IdentityStatus.VERIFIED
                identity.last_verified = int(time.time())

            print(f"[零知识验证] {address[:8]}: 验证通过")
            print(f"  证明ID: {proof_id[:16]}...")
            print(f"  公共信号: {public_signal}")

            return proof_id, True
        else:
            print(f"[零知识验证] {address[:8]}: 验证失败")
            return "", False

    def record_memory(
        self,
        identity_address: str,
        memory_content: str,
        memory_type: MemoryType,
        is_encrypted: bool = True
    ) -> int:
        if identity_address not in self.identities:
            raise ValueError(f"身份 {identity_address[:8]} 不存在")

        identity = self.identities[identity_address]
        if identity.status != IdentityStatus.VERIFIED:
            raise ValueError(f"身份 {identity_address[:8]} 未验证")

        # 生成nullifier防止重复使用
        nullifier = self._hash(identity_address, memory_content, str(time.time()))
        if nullifier in self.used_nullifiers:
            raise ValueError("记忆已存在，防止重复记录")

        self.memory_counter += 1
        memory_id = self.memory_counter
        memory_hash = self._hash(memory_content, str(memory_id))

        memory = Memory(
            memory_id=memory_id,
            identity_address=identity_address,
            memory_hash=memory_hash,
            memory_type=memory_type,
            nullifier=nullifier,
            timestamp=int(time.time()),
            is_encrypted=is_encrypted,
            is_verified=False
        )

        self.memories[memory_id] = memory
        self.used_nullifiers.add(nullifier)

        if identity_address not in self.identity_memories:
            self.identity_memories[identity_address] = []
        self.identity_memories[identity_address].append(memory_id)

        print(f"[记忆记录] #{memory_id}: {identity_address[:8]}")
        print(f"  类型: {memory_type.value}, 加密: {is_encrypted}")
        print(f"  哈希: {memory_hash[:16]}...")

        return memory_id

    def verify_memory_zk(
        self,
        memory_id: int,
        memory_content: str,
        public_signal: str = "verify_memory"
    ) -> Tuple[str, bool]:
        if memory_id not in self.memories:
            raise ValueError(f"记忆 #{memory_id} 不存在")

        memory = self.memories[memory_id]
        expected_hash = self._hash(memory_content, str(memory_id))

        if expected_hash == memory.memory_hash:
            memory.is_verified = True
            proof_id = self._hash("memory_proof", str(memory_id), str(time.time()))

            proof = ZKProof(
                proof_id=proof_id,
                identity_address=memory.identity_address,
                public_signals=public_signal,
                proof_data="memory_zk_proof",
                method="zk_stark",
                timestamp=int(time.time()),
                status=ProofStatus.VERIFIED,
                expiration=int(time.time()) + 365 * 86400
            )

            self.proofs[proof_id] = proof

            print(f"[记忆验证] #{memory_id}: 验证通过")
            return proof_id, True
        else:
            print(f"[记忆验证] #{memory_id}: 验证失败")
            return "", False

    def prove_identity_without_memory(
        self,
        address: str,
        secret_data: str,
        allowed_memories: List[str]
    ) -> Tuple[str, bool]:
        """
        零知识证明：证明"我是谁"而不泄露"我的记忆"
        对应《禁闭岛》中泰迪证明"他是安德鲁·莱迪斯"而不需要说出"他杀了妻子"
        """
        if address not in self.identities:
            raise ValueError(f"身份 {address[:8]} 不存在")

        identity = self.identities[address]
        expected_hash = self._hash(address, secret_data, "identity_v1")

        if expected_hash != identity.identity_hash:
            print(f"[身份证明] {address[:8]}: 身份验证失败")
            return "", False

        # 证明身份，但不泄露具体记忆内容
        proof_id = self._hash("zk_proof", address, str(time.time()), "no_memory_leak")

        # 创建零知识证明
        proof = ZKProof(
            proof_id=proof_id,
            identity_address=address,
            public_signals=json.dumps({
                "claim": "I am who I claim to be",
                "allowed_memories_count": len(allowed_memories),
                "verified_without": "memory_content"
            }),
            proof_data="zk_proof_no_memory_leakage",
            method="zk_snark_no_memory",
            timestamp=int(time.time()),
            status=ProofStatus.VERIFIED,
            expiration=int(time.time()) + 365 * 86400
        )

        self.proofs[proof_id] = proof

        print(f"[身份证明] {address[:8]}: 零知识证明成功")
        print(f"  证明ID: {proof_id[:16]}...")
        print(f"  不泄露记忆内容: {len(allowed_memories)} 条记忆被保护")

        return proof_id, True

    def request_recovery(
        self,
        address: str,
        new_secret: str
    ) -> int:
        if address not in self.identities:
            raise ValueError(f"身份 {address[:8]} 不存在")

        identity = self.identities[address]
        if len(identity.guardians) == 0:
            raise ValueError("没有设置守护者，无法恢复")

        identity.status = IdentityStatus.RECOVERING

        self.recovery_counter += 1
        request_id = self.recovery_counter
        new_commitment = self._hash(new_secret, str(time.time()))

        request = RecoveryRequest(
            request_id=request_id,
            identity_address=address,
            new_commitment=new_commitment,
            approvals_needed=identity.guardian_threshold,
            approvals_received=0,
            approvers=[],
            expiry_time=int(time.time()) + 3 * 86400,
            is_executed=False
        )

        self.recovery_requests[request_id] = request

        print(f"[恢复请求] #{request_id}: {address[:8]}")
        print(f"  需要: {identity.guardian_threshold}/{len(identity.guardians)} 守护者批准")
        print(f"  新承诺: {new_commitment[:16]}...")

        return request_id

    def approve_recovery(self, request_id: int, guardian: str) -> bool:
        if request_id not in self.recovery_requests:
            raise ValueError(f"恢复请求 #{request_id} 不存在")

        request = self.recovery_requests[request_id]
        if request.is_executed:
            raise ValueError("恢复请求已执行")

        if int(time.time()) >= request.expiry_time:
            raise ValueError("恢复请求已过期")

        identity = self.identities[request.identity_address]
        if guardian not in identity.guardians:
            raise ValueError(f"{guardian[:8]} 不是守护者")

        if guardian in request.approvers:
            print(f"[恢复批准] {guardian[:8]}: 已批准，无需重复")
            return True

        request.approvers.append(guardian)
        request.approvals_received += 1

        print(f"[恢复批准] {guardian[:8]}: 批准恢复 #{request_id}")
        print(f"  进度: {request.approvals_received}/{request.approvals_needed}")

        if request.approvals_received >= request.approvals_needed:
            self._execute_recovery(request_id)

        return True

    def _execute_recovery(self, request_id: int) -> bool:
        request = self.recovery_requests[request_id]
        identity = self.identities[request.identity_address]

        identity.commitment = request.new_commitment
        identity.status = IdentityStatus.VERIFIED
        identity.last_verified = int(time.time())
        identity.recovery_count = getattr(identity, 'recovery_count', 0) + 1
        request.is_executed = True

        print(f"[恢复执行] #{request_id}: {identity.address[:8]}")
        print(f"  新承诺已激活")
        return True

    def get_identity_info(self, address: str) -> Dict:
        if address not in self.identities:
            raise ValueError(f"身份 {address[:8]} 不存在")

        identity = self.identities[address]
        memory_ids = self.identity_memories.get(address, [])

        return {
            "address": identity.address,
            "identity_hash": identity.identity_hash[:16] + "...",
            "commitment": identity.commitment[:16] + "...",
            "status": identity.status.value,
            "created_at": identity.created_at,
            "last_verified": identity.last_verified,
            "guardians": len(identity.guardians),
            "guardian_threshold": identity.guardian_threshold,
            "memories": len(memory_ids),
            "verified_memories": sum(
                1 for mid in memory_ids
                if mid in self.memories and self.memories[mid].is_verified
            )
        }

    def simulate_shutter_island(self) -> Dict:
        """
        模拟《禁闭岛》中的身份验证场景
        """
        print(f"\n{'='*60}")
        print(f"  模拟:《禁闭岛》中的零知识身份验证")
        print(f"{'='*60}\n")

        # 角色创建
        print(">>> 角色创建\n")

        teddy = self.create_identity(
            address="Teddy_Daniels_FED",
            secret_data="teddy_identity_secret_123",
            guardians=["Dr_Cawley", "Dr_Sheehan", "Chuck_Aule"],
            guardian_threshold=2
        )

        andrew = self.create_identity(
            address="Andrew_Laeddis_PATIENT",
            secret_data="andrew_laeddis_real_identity_456",
            guardians=["Dr_Cawley", "Dr_Sheehan"],
            guardian_threshold=2
        )

        # 模拟泰迪的"虚假记忆"
        print(">>> 虚假记忆记录\n")
        fake_memory_id = self.record_memory(
            identity_address="Teddy_Daniels_FED",
            memory_content="I am a federal marshal investigating a disappearance at Ashecliffe Hospital",
            memory_type=MemoryType.BIOGRAPHIC,
            is_encrypted=False
        )

        # 模拟安德鲁的"真实记忆"
        print(">>> 真实记忆记录\n")
        real_memory_1 = self.record_memory(
            identity_address="Andrew_Laeddis_PATIENT",
            memory_content="My wife Dolores drowned our three children in the lake",
            memory_type=MemoryType.BIOGRAPHIC,
            is_encrypted=True
        )

        real_memory_2 = self.record_memory(
            identity_address="Andrew_Laeddis_PATIENT",
            memory_content="I shot and killed my wife Dolores",
            memory_type=MemoryType.BIOGRAPHIC,
            is_encrypted=True
        )

        # 零知识身份验证：泰迪证明"他是安德鲁"而不泄露"他杀了妻子"
        print(">>> 零知识身份验证\n")
        print("场景: 泰迪需要证明"他是安德鲁·莱迪斯"，")
        print("但不需要泄露"他杀了妻子"这个事实\n")

        # 第一次尝试：使用虚假身份
        proof_id_1, result_1 = self.verify_identity_zk(
            address="Teddy_Daniels_FED",
            secret_data="teddy_identity_secret_123",
            public_signal="verify_federal_marshal"
        )
        print(f"  虚假身份验证: {'通过' if result_1 else '失败'}\n")

        # 第二次尝试：使用真实身份，零知识证明
        # 先验证安德鲁的真实身份
        self.verify_identity_zk(
            address="Andrew_Laeddis_PATIENT",
            secret_data="andrew_laeddis_real_identity_456",
            public_signal="verify_patient_identity"
        )

        # 零知识证明：证明是安德鲁，但不泄露记忆内容
        proof_id_zk, result_zk = self.prove_identity_without_memory(
            address="Andrew_Laeddis_PATIENT",
            secret_data="andrew_laeddis_real_identity_456",
            allowed_memories=[
                "My wife Dolores",
                "Three children",
                "The lake",
                "Shot and killed"
            ]
        )
        print(f"  零知识证明: {'通过' if result_zk else '失败'}")
        print(f"  -> 证明'我是安德鲁·莱迪斯'，而不泄露具体的记忆内容")

        # 恢复身份
        print("\n>>> 身份恢复\n")
        print("场景: 泰迪通过守护者恢复身份\n")

        recovery_id = self.request_recovery(
            address="Andrew_Laeddis_PATIENT",
            new_secret="andrew_healed_identity_789"
        )

        self.approve_recovery(recovery_id, "Dr_Cawley")
        self.approve_recovery(recovery_id, "Dr_Sheehan")

        # 最终状态
        print("\n>>> 最终身份状态\n")
        print(f"泰迪(虚假身份): {json.dumps(self.get_identity_info('Teddy_Daniels_FED'), indent=2, ensure_ascii=False)}")
        print(f"\n安德鲁(真实身份): {json.dumps(self.get_identity_info('Andrew_Laeddis_PATIENT'), indent=2, ensure_ascii=False)}")

        print(f"\n{'='*60}")
        print(f"  模拟完成")
        print(f"{'='*60}")

        return {
            "teddy_identity": self.get_identity_info("Teddy_Daniels_FED"),
            "andrew_identity": self.get_identity_info("Andrew_Laeddis_PATIENT"),
            "fake_memory": fake_memory_id,
            "real_memories": [real_memory_1, real_memory_2],
            "zk_proof_result": result_zk,
            "recovery_completed": True
        }


def main():
    zk_memory = ZeroKnowledgeMemory()
    result = zk_memory.simulate_shutter_island()

    print(f"\n=== 模拟结果 ===")
    print(f"零知识证明: {'成功' if result['zk_proof_result'] else '失败'}")
    print(f"身份恢复: {'成功' if result['recovery_completed'] else '失败'}")


if __name__ == "__main__":
    main()