Hyperledger sawtooth JavaScript SDK:提交的批次无效

Question

我正在尝试通过javascript SDK实现Hyperledger sawtooth交易，遵循这个 https://sawtooth.hyperledger.org/docs/core/releases/1.0/_autogen/sdk_submit_tutorial_js.html#encoding-your-payload。

/*
*Create the transaction header
*/
const createTransactionHeader = function createTransactionHeader(payloadBytes) {
return  protobuf.TransactionHeader.encode({
familyName: 'intkey',
familyVersion: '1.0',
inputs: [],
outputs: [],
signerPublicKey: '02cb65a26f7af4286d5f8118400262f7790e20018f2d01e1a9ffc25de1aafabdda',
batcherPublicKey: '02cb65a26f7af4286d5f8118400262f7790e20018f2d01e1a9ffc25de1aafabdda',
dependencies: [],
payloadSha512: createHash('sha512').update(payloadBytes).digest('hex')
}).finish();

}
/*
* Create the transactions
*/
const createTransaction = function createTransaction(transactionHeaderBytes, payloadBytes) {
const signature = signer.sign(transactionHeaderBytes)
return transaction = protobuf.Transaction.create({
header: transactionHeaderBytes,
headerSignature: Buffer.from(signature, 'utf8').toString('hex'),
payload: payloadBytes
});
}

提交交易时，我从 REST API 收到以下错误

{
"error": {
"code": 30,
"message": "The submitted BatchList was rejected by the validator. It was poorly formed, or has an invalid signature.",
"title": "Submitted Batches Invalid"
}
}

发现以下与我的问题类似的问题

锯齿无效批次或签名

但它在 java 中实现的解决方案不适用于我的情况

Answer 1

这应该有效，试试这个：

const cbor = require('cbor');
const {createContext, CryptoFactory} = require('sawtooth-sdk/signing');
const {createHash} = require('crypto');
const {protobuf} = require('sawtooth-sdk');
const request = require('request');
const crypto = require('crypto');
const context = createContext('secp256k1');
const privateKey = context.newRandomPrivateKey();
const signer = CryptoFactory(context).newSigner(privateKey);

// Here's how you can generate the input output address
const FAMILY_NAMESPACE = crypto.createHash('sha512').update('intkey').digest('hex').toLowerCase().substr(0, 6);
const address = FAMILY_NAMESPACE + crypto.createHash('sha512').update('foo').digest('hex').toLowerCase().substr(0, 64);
const payload = {
Verb: 'set',
Name: 'foo',
Value: 42
};
const payloadBytes = cbor.encode(payload);
const transactionHeaderBytes = protobuf.TransactionHeader.encode({
familyName: 'intkey',
familyVersion: '1.0',
inputs: [address],
outputs: [address],
signerPublicKey: signer.getPublicKey().asHex(),
batcherPublicKey: signer.getPublicKey().asHex(),
dependencies: [],
payloadSha512: createHash('sha512').update(payloadBytes).digest('hex')
}).finish();
const transactionHeaderSignature = signer.sign(transactionHeaderBytes);
const transaction = protobuf.Transaction.create({
header: transactionHeaderBytes,
headerSignature: transactionHeaderSignature,
payload: payloadBytes
});
const transactions = [transaction]
const batchHeaderBytes = protobuf.BatchHeader.encode({
signerPublicKey: signer.getPublicKey().asHex(),
transactionIds: transactions.map((txn) => txn.headerSignature),
}).finish();
const batchHeaderSignature = signer.sign(batchHeaderBytes)
const batch = protobuf.Batch.create({
header: batchHeaderBytes,
headerSignature: batchHeaderSignature,
transactions: transactions
};
const batchListBytes = protobuf.BatchList.encode({
batches: [batch]
}).finish();
request.post({
url: 'http://rest.api.domain/batches',
body: batchListBytes,
headers: {'Content-Type': 'application/octet-stream'}
}, (err, response) => {
if(err) {
return console.log(err);
}
console.log(response.body);
});