Можете подсказать почему не запускается?

Question

[palih1988]

Подскажите, пожалуйста, в коде нет ошибок, но он не запускается, что делать?

const crypto = require("crypto"), SHA256 = message => crypto.createHash("sha256").update(message).digest("hex");
const EC = require("elliptic").ec, ec = new EC("secp256k1");
const MINT_KEY_PAIR = ec.genKeyPair();
const MINT_PUBLIC_ADDRESS = MINT_KEY_PAIR.getPublic("hex");
const holderKeyPair = ec.genKeyPair();

// const keyPair = ec.genKeyPair();
// public key: key.Pair.getPublic("hex");
// private key: key.Pair.get.Private("hex");

class Block {
    constructor(timestamp = "", data = []) {
        this.timestamp = timestamp;
        this.data = data;
        this.hash = this.getHash();
        this.prevHash = "";
        this.nonce = 0;
    }
    
    getHash() {
        return SHA256(JSON.stringify(this.data) + this.timestamp + this.prevHash + this.nonce);
    }

    mine(difficulty) {
        while(!this.hash.startsWith(Array(difficulty + 1).join("0"))){
            this.nonce++;
            this.hash = this.getHash();
        }
    }

    hasValidTransactions(chain) {
        return this.data.every(transaction => transaction.isValid(transaction, chain));
    }
}

class Blockchain {
    constructor() {
        const initialCoinRelease = new Transaction(MINT_PUBLIC_ADDRESS, holderKeyPair.getPublic("hex"), 100000)
        this.chain = [new Block(Date.now().toString(), [initialCoinRelease])];
        this.difficulty = 1;
        this.blockTime = 30000;
        this.transactions = [];
        this.reward = 297;
    }

    getLastBlock() {
        return this.chain[this.chain.length - 1]
    }

    getBalance(address) {
        let balance = 0;

        this.chain.forEach(block => {
            block.data.forEach(transaction => {
                if(transaction.from === address) {
                    balance -= transaction.amount;
                    balance -= transaction.gas;
                }

                if(transaction.to === address) {
                    balance += transaction.amount;
                }
            })
        })

        return balance;
    }

    addBlock(block) {
        block.prevHash = this.getLastBlock().hash;
        block.hash = block.getHash();

        block.mine(this.difficulty);

        this.chain.push(block);

        this.difficulty += Date.now() - parseInt(this.getLastBlock().timestamp) < this.blockTime ? 1 : -1;
    }

    addTransaction(transaction) {
        if (transaction.isValid(transaction, this)) {
            this.transactions.push(transaction);
        }
        
    }

    mineTransactions(rewardAddress) {
        let gas = 0;

        this.transactions.forEach(transaction => {
            gas += transaction.gas;
        })

        const rewardTransaction = new Transaction(MINT_PUBLIC_ADDRESS, rewardAddress, this.reward + gas);
        rewardTransaction.sign(MINT_KEY_PAIR);

        if (tis.transactions.length !==0) this.addBlock(new Block(Date.now().toString(), [rewardTransaction, ...this.transactions]));

        this.transactions = [];
    }

    isValid(blockchain = this) {
        for (let i = 1; i < blockchain.chain.length; i++) {
            const currentBlock = blockchain.chain[i];
            const prevBlock = blockchain.chain[i-1];

            if (
                currentBlock.hash !== currentBlock.getHash() || 
                currentBlock.prevHash !== prevBlock.hash ||
                currentBlock.hasValidTransactions(blockchain)
                ) {
                return false;
            }
        }
        return true;
    }
}

class Transaction {
    constructor(from, to, amount, gas = 0) {
        this.from = from;
        this.to = to;
        this.amount = amount;
        this.gas = gas;
    }

    sign(keyPair) {
        if (keyPair.getPublic("hex") === this.from) {
            this.signature = key.Pair.sign(SHA256(this.from + this.to + this.amount + this.gas), "base64").toDER("hex");
        }
    }

    isValid(tx, chain) {
        return (
            tx.from &&
            tx.to &&
            tx.amount &&
            (chain.getBalance(tx.from) >= tx.amount + tx.gas || tx.from === MINT_PUBLIC_ADDRESS && tx.amount === this.reward) &&
            ec.keyFromPublic(tx.from, "hex").verify(SHA256(tx.from + tx.to + tx.amount + tx.gas), tx.signature)
        )
    }
}

const Palihchain = new Blockchain();

// Your original balance is 100000

const girlfriendWallet = ec.genKeyPair();

const transaction = new Transaction(holderKeyPair.getPublic("hex"), girlfriendWallet.getPublic("hex"), 333, 10);

transaction.sign(holderKeyPair);

Palihchain.addTransaction(transaction);

Palihchain.mineTransactions(girlfriendWallet.getPublic("hex"));

console.log("Your balance:", Palihchain.getBalance(holderKeyPair.getPublic("hex")));
console.log("Her balance:", Palihchain.getBalance(girlfriendWallet.getPublic("hex")));

Ошибка в этом this.signature = key.Pair.sign(SHA256(this.from + this.to + this.amount + this.gas), "base64").toDER("hex");

Comments

[Алексей Уколов]

в коде нет ошибок

Ошибка в этом

А, ну ок.

[palih1988]

Transaction.sign (C:\Users\ooobi_000\Desktop\Мой блокчейн\palihchain.js:129:30)
at Object. (C:\Users\ooobi_000\Desktop\Мой блокчейн\palihchain.js:152:13)
at Module._compile (node:internal/modules/cjs/loader:1109:14)
at Object.Module._extensions..js (node:internal/modules/cjs/loader:1138:10)
at Module.load (node:internal/modules/cjs/loader:989:32)
at Function.Module._load (node:internal/modules/cjs/loader:829:14)
at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:76:12)
at node:internal/main/run_main_module:17:47

[palih1988]

а почему тогда вот это появляется при запуске?

[palih1988]

Алексей Уколов, так в чем ошибка то?

[Алексей Уколов]

palih1988, откуда я знаю — в вопросе вы написали, что ошибок нет, потом что есть, потом скопировали трейс без текста ошибки ¯\_(ツ)_/¯

[palih1988]

Алексей Уколов, так вот и спрашиваю, начинаю запускать цепочку вылазит вот это

this.signature = key.Pair.sign(SHA256(this.from + this.to + this.amount + this.gas), "base64").toDER("hex");

Transaction.sign (C:\Users\ooobi_000\Desktop\Мой блокчейн\palihchain.js:129:30)
at Object. (C:\Users\ooobi_000\Desktop\Мой блокчейн\palihchain.js:152:13)
at Module._compile (node:internal/modules/cjs/loader:1109:14)
at Object.Module._extensions..js (node:internal/modules/cjs/loader:1138:10)
at Module.load (node:internal/modules/cjs/loader:989:32)
at Function.Module._load (node:internal/modules/cjs/loader:829:14)
at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:76:12)
at node:internal/main/run_main_module:17:47

[Philipp]

palih1988, вам не блокчейны городить, а сюда надо https://learn.javascript.ru/screencast/nodejs
Задом-наперед все делаете.

Answer 1

[Арсений Огузов]

Пофиксил ошибки в коде, теперь работает

const crypto = await import("crypto");

const SHA256 = message => crypto.createHash("sha256").update(message).digest("hex");
const elliptic = await import("elliptic");
const EC = elliptic.default.ec;
const ec = new EC("secp256k1");
const MINT_KEY_PAIR = ec.genKeyPair();
const MINT_PUBLIC_ADDRESS = MINT_KEY_PAIR.getPublic("hex");
const holderKeyPair = ec.genKeyPair();

// const keyPair = ec.genKeyPair();
// public key: key.Pair.getPublic("hex");
// private key: key.Pair.get.Private("hex");

class Block {
    constructor(timestamp = "", data = []) {
        this.timestamp = timestamp;
        this.data = data;
        this.hash = this.getHash();
        this.prevHash = "";
        this.nonce = 0;
    }
    
    getHash() {
        return SHA256(JSON.stringify(this.data) + this.timestamp + this.prevHash + this.nonce);
    }

    mine(difficulty) {
        while(!this.hash.startsWith(Array(difficulty + 1).join("0"))){
            this.nonce++;
            this.hash = this.getHash();
        }
    }

    hasValidTransactions(chain) {
        return this.data.every(transaction => transaction.isValid(transaction, chain));
    }
}

class Blockchain {
    constructor() {
        const initialCoinRelease = new Transaction(MINT_PUBLIC_ADDRESS, holderKeyPair.getPublic("hex"), 100000)
        this.chain = [new Block(Date.now().toString(), [initialCoinRelease])];
        this.difficulty = 1;
        this.blockTime = 30000;
        this.transactions = [];
        this.reward = 297;
    }

    getLastBlock() {
        return this.chain[this.chain.length - 1]
    }

    getBalance(address) {
        let balance = 0;

        this.chain.forEach(block => {
            block.data.forEach(transaction => {
                if(transaction.from === address) {
                    balance -= transaction.amount;
                    balance -= transaction.gas;
                }

                if(transaction.to === address) {
                    balance += transaction.amount;
                }
            })
        })

        return balance;
    }

    addBlock(block) {
        block.prevHash = this.getLastBlock().hash;
        block.hash = block.getHash();

        block.mine(this.difficulty);

        this.chain.push(block);

        this.difficulty += Date.now() - parseInt(this.getLastBlock().timestamp) < this.blockTime ? 1 : -1;
    }

    addTransaction(transaction) {
        if (transaction.isValid(transaction, this)) {
            this.transactions.push(transaction);
        }
        
    }

    mineTransactions(rewardAddress) {
        let gas = 0;

        this.transactions.forEach(transaction => {
            gas += transaction.gas;
        })

        const rewardTransaction = new Transaction(MINT_PUBLIC_ADDRESS, rewardAddress, this.reward + gas);
        rewardTransaction.sign(MINT_KEY_PAIR);

        if (this.transactions.length !==0) this.addBlock(new Block(Date.now().toString(), [rewardTransaction, ...this.transactions]));

        this.transactions = [];
    }

    isValid(blockchain = this) {
        for (let i = 1; i < blockchain.chain.length; i++) {
            const currentBlock = blockchain.chain[i];
            const prevBlock = blockchain.chain[i-1];

            if (
                currentBlock.hash !== currentBlock.getHash() || 
                currentBlock.prevHash !== prevBlock.hash ||
                currentBlock.hasValidTransactions(blockchain)
                ) {
                return false;
            }
        }
        return true;
    }
}

class Transaction {
    constructor(from, to, amount, gas = 0) {
        this.from = from;
        this.to = to;
        this.amount = amount;
        this.gas = gas;
    }

    sign(keyPair) {
        if (keyPair.getPublic("hex") === this.from) {
            this.signature = keyPair.sign(SHA256(this.from + this.to + this.amount + this.gas), "base64").toDER("hex");
        }
    }

    isValid(tx, chain) {
        return (
            tx.from &&
            tx.to &&
            tx.amount &&
            (chain.getBalance(tx.from) >= tx.amount + tx.gas || tx.from === MINT_PUBLIC_ADDRESS && tx.amount === this.reward) &&
            ec.keyFromPublic(tx.from, "hex").verify(SHA256(tx.from + tx.to + tx.amount + tx.gas), tx.signature)
        )
    }
}

const Palihchain = new Blockchain();

// Your original balance is 100000

const girlfriendWallet = ec.genKeyPair();

const transaction = new Transaction(holderKeyPair.getPublic("hex"), girlfriendWallet.getPublic("hex"), 333, 10);

transaction.sign(holderKeyPair);

Palihchain.addTransaction(transaction);

Palihchain.mineTransactions(girlfriendWallet.getPublic("hex"));

console.log("Your balance:", Palihchain.getBalance(holderKeyPair.getPublic("hex")));
console.log("Her balance:", Palihchain.getBalance(girlfriendWallet.getPublic("hex")));

Comments

[palih1988]

я попробовал но вышла ошибка

const crypto = await import("crypto");

const SHA256 = message => crypto.createHash("sha256").update(message).digest("hex");
const elliptic = await import("elliptic");
const EC = elliptic.default.ec;
const ec = new EC("secp256k1");
const MINT_KEY_PAIR = ec.genKeyPair();
const MINT_PUBLIC_ADDRESS = MINT_KEY_PAIR.getPublic("hex");
const holderKeyPair = ec.genKeyPair();

// const keyPair = ec.genKeyPair();
// public key: key.Pair.getPublic("hex");
// private key: key.Pair.get.Private("hex");

class Block {
constructor(timestamp = "", data = []) {
this.timestamp = timestamp;
this.data = data;
this.hash = this.getHash();
this.prevHash = "";
this.nonce = 0;
}

getHash() {
return SHA256(JSON.stringify(this.data) + this.timestamp + this.prevHash + this.nonce);
}

mine(difficulty) {
while(!this.hash.startsWith(Array(difficulty + 1).join("0"))){
this.nonce++;
this.hash = this.getHash();
}
}

hasValidTransactions(chain) {
return this.data.every(transaction => transaction.isValid(transaction, chain));
}
}

class Blockchain {
constructor() {
const initialCoinRelease = new Transaction(MINT_PUBLIC_ADDRESS, holderKeyPair.getPublic("hex"), 100000)
this.chain = [new Block(Date.now().toString(), [initialCoinRelease])];
this.difficulty = 1;
this.blockTime = 30000;
this.transactions = [];
this.reward = 297;
}

getLastBlock() {
return this.chain[this.chain.length - 1]
}

getBalance(address) {
let balance = 0;

this.chain.forEach(block => {
block.data.forEach(transaction => {
if(transaction.from === address) {
balance -= transaction.amount;
balance -= transaction.gas;
}

if(transaction.to === address) {
balance += transaction.amount;
}
})
})

return balance;
}

addBlock(block) {
block.prevHash = this.getLastBlock().hash;
block.hash = block.getHash();

block.mine(this.difficulty);

this.chain.push(block);

this.difficulty += Date.now() - parseInt(this.getLastBlock().timestamp) < this.blockTime ? 1 : -1;
}

addTransaction(transaction) {
if (transaction.isValid(transaction, this)) {
this.transactions.push(transaction);
}

}

mineTransactions(rewardAddress) {
let gas = 0;

this.transactions.forEach(transaction => {
gas += transaction.gas;
})

const rewardTransaction = new Transaction(MINT_PUBLIC_ADDRESS, rewardAddress, this.reward + gas);
rewardTransaction.sign(MINT_KEY_PAIR);

if (this.transactions.length !==0) this.addBlock(new Block(Date.now().toString(), [rewardTransaction, ...this.transactions]));

this.transactions = [];
}

isValid(blockchain = this) {
for (let i = 1; i < blockchain.chain.length; i++) {
const currentBlock = blockchain.chain[i];
const prevBlock = blockchain.chain[i-1];

if (
currentBlock.hash !== currentBlock.getHash() ||
currentBlock.prevHash !== prevBlock.hash ||
currentBlock.hasValidTransactions(blockchain)
) {
return false;
}
}
return true;
}
}

class Transaction {
constructor(from, to, amount, gas = 0) {
this.from = from;
this.to = to;
this.amount = amount;
this.gas = gas;
}

sign(keyPair) {
if (keyPair.getPublic("hex") === this.from) {
this.signature = keyPair.sign(SHA256(this.from + this.to + this.amount + this.gas), "base64").toDER("hex");
}
}

isValid(tx, chain) {
return (
tx.from &&
tx.to &&
tx.amount &&
(chain.getBalance(tx.from) >= tx.amount + tx.gas || tx.from === MINT_PUBLIC_ADDRESS && tx.amount === this.reward) &&
ec.keyFromPublic(tx.from, "hex").verify(SHA256(tx.from + tx.to + tx.amount + tx.gas), tx.signature)
)
}
}

const Palihchain = new Blockchain();

// Your original balance is 100000

const girlfriendWallet = ec.genKeyPair();

const transaction = new Transaction(holderKeyPair.getPublic("hex"), girlfriendWallet.getPublic("hex"), 333, 10);

transaction.sign(holderKeyPair);

Palihchain.addTransaction(transaction);

Palihchain.mineTransactions(girlfriendWallet.getPublic("hex"));

console.log("Your balance:", Palihchain.getBalance(holderKeyPair.getPublic("hex")));
console.log("Her balance:", Palihchain.getBalance(girlfriendWallet.getPublic("hex")));

[palih1988]

SyntaxError: await is only valid in async functions and the top level bodies of modules

[Арсений Огузов]

palih1988, попробуйте так

const crypto = require("crypto");

const SHA256 = message => crypto.createHash("sha256").update(message).digest("hex");
const { ec: EC } = require("elliptic");
const ec = new EC("secp256k1");
const MINT_KEY_PAIR = ec.genKeyPair();
const MINT_PUBLIC_ADDRESS = MINT_KEY_PAIR.getPublic("hex");
const holderKeyPair = ec.genKeyPair();

[palih1988]

а можно еще вопрос, вот еще ошибка

this.transactions.push(transaction);
^

TypeError: Cannot read property 'push' of undefined
at Blockchain.addTransaction (C:\Users\SH4\Desktop\D.I.G. Blockchain\digchain.js:82:31)
at Object. (C:\Users\SH4\Desktop\D.I.G. Blockchain\digchain.js:154:10)
←[90m at Module._compile (internal/modules/cjs/loader.js:1068:30)←[39m
←[90m at Object.Module._extensions..js (internal/modules/cjs/loader.js:1097:10)←[39m
←[90m at Module.load (internal/modules/cjs/loader.js:933:32)←[39m
←[90m at Function.Module._load (internal/modules/cjs/loader.js:774:14)←[39m
←[90m at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:72:12)←[39m
←[90m at internal/main/run_main_module.js:17:47←[39m

[Арсений Огузов]

странно, попробуйте полностью этот код

const crypto = require("crypto");

const SHA256 = message => crypto.createHash("sha256").update(message).digest("hex");
const { ec: EC } = require("elliptic");
const ec = new EC("secp256k1");
const MINT_KEY_PAIR = ec.genKeyPair();
const MINT_PUBLIC_ADDRESS = MINT_KEY_PAIR.getPublic("hex");
const holderKeyPair = ec.genKeyPair();

// const keyPair = ec.genKeyPair();
// public key: key.Pair.getPublic("hex");
// private key: key.Pair.get.Private("hex");

class Block {
    constructor(timestamp = "", data = []) {
        this.timestamp = timestamp;
        this.data = data;
        this.hash = this.getHash();
        this.prevHash = "";
        this.nonce = 0;
    }
    
    getHash() {
        return SHA256(JSON.stringify(this.data) + this.timestamp + this.prevHash + this.nonce);
    }

    mine(difficulty) {
        while(!this.hash.startsWith(Array(difficulty + 1).join("0"))){
            this.nonce++;
            this.hash = this.getHash();
        }
    }

    hasValidTransactions(chain) {
        return this.data.every(transaction => transaction.isValid(transaction, chain));
    }
}

class Blockchain {
    constructor() {
        const initialCoinRelease = new Transaction(MINT_PUBLIC_ADDRESS, holderKeyPair.getPublic("hex"), 100000)
        this.chain = [new Block(Date.now().toString(), [initialCoinRelease])];
        this.difficulty = 1;
        this.blockTime = 30000;
        this.transactions = [];
        this.reward = 297;
    }

    getLastBlock() {
        return this.chain[this.chain.length - 1]
    }

    getBalance(address) {
        let balance = 0;

        this.chain.forEach(block => {
            block.data.forEach(transaction => {
                if(transaction.from === address) {
                    balance -= transaction.amount;
                    balance -= transaction.gas;
                }

                if(transaction.to === address) {
                    balance += transaction.amount;
                }
            })
        })

        return balance;
    }

    addBlock(block) {
        block.prevHash = this.getLastBlock().hash;
        block.hash = block.getHash();

        block.mine(this.difficulty);

        this.chain.push(block);

        this.difficulty += Date.now() - parseInt(this.getLastBlock().timestamp) < this.blockTime ? 1 : -1;
    }

    addTransaction(transaction) {
        if (transaction.isValid(transaction, this)) {
            this.transactions.push(transaction);
        }
        
    }

    mineTransactions(rewardAddress) {
        let gas = 0;

        this.transactions.forEach(transaction => {
            gas += transaction.gas;
        })

        const rewardTransaction = new Transaction(MINT_PUBLIC_ADDRESS, rewardAddress, this.reward + gas);
        rewardTransaction.sign(MINT_KEY_PAIR);

        if (this.transactions.length !==0) this.addBlock(new Block(Date.now().toString(), [rewardTransaction, ...this.transactions]));

        this.transactions = [];
    }

    isValid(blockchain = this) {
        for (let i = 1; i < blockchain.chain.length; i++) {
            const currentBlock = blockchain.chain[i];
            const prevBlock = blockchain.chain[i-1];

            if (
                currentBlock.hash !== currentBlock.getHash() || 
                currentBlock.prevHash !== prevBlock.hash ||
                currentBlock.hasValidTransactions(blockchain)
                ) {
                return false;
            }
        }
        return true;
    }
}

class Transaction {
    constructor(from, to, amount, gas = 0) {
        this.from = from;
        this.to = to;
        this.amount = amount;
        this.gas = gas;
    }

    sign(keyPair) {
        if (keyPair.getPublic("hex") === this.from) {
            this.signature = keyPair.sign(SHA256(this.from + this.to + this.amount + this.gas), "base64").toDER("hex");
        }
    }

    isValid(tx, chain) {
        return (
            tx.from &&
            tx.to &&
            tx.amount &&
            (chain.getBalance(tx.from) >= tx.amount + tx.gas || tx.from === MINT_PUBLIC_ADDRESS && tx.amount === this.reward) &&
            ec.keyFromPublic(tx.from, "hex").verify(SHA256(tx.from + tx.to + tx.amount + tx.gas), tx.signature)
        )
    }
}

const Palihchain = new Blockchain();

// Your original balance is 100000

const girlfriendWallet = ec.genKeyPair();

const transaction = new Transaction(holderKeyPair.getPublic("hex"), girlfriendWallet.getPublic("hex"), 333, 10);

transaction.sign(holderKeyPair);

Palihchain.addTransaction(transaction);

Palihchain.mineTransactions(girlfriendWallet.getPublic("hex"));

console.log("Your balance:", Palihchain.getBalance(holderKeyPair.getPublic("hex")));
console.log("Her balance:", Palihchain.getBalance(girlfriendWallet.getPublic("hex")));

[palih1988]

еще вопрос MINT, INITIAL RELEASE KEY, PUBLIC KEY, KEY 2, PUBLIC KEY 2, где сгенерировать не подскажите, или можно самому придумать?

[Арсений Огузов]

а где они должны использоваться?

[palih1988]

в самом блокчейне