mirror of
https://github.com/bigchaindb/js-bigchaindb-driver.git
synced 2024-11-22 09:46:58 +01:00
53 lines
2.2 KiB
JavaScript
53 lines
2.2 KiB
JavaScript
// Copyright BigchainDB GmbH and BigchainDB contributors
|
|
// SPDX-License-Identifier: (Apache-2.0 AND CC-BY-4.0)
|
|
// Code is Apache-2.0 and docs are CC-BY-4.0
|
|
|
|
import base58 from 'bs58'
|
|
import { createHash } from 'crypto'
|
|
import { Ed25519Sha256 } from 'crypto-conditions'
|
|
import { Transaction, Ed25519Keypair } from '../src'
|
|
// TODO: Find out if ava has something like conftest, if so put this there.
|
|
|
|
// NOTE: It's safer to cast `Math.random()` to a string, to avoid differences
|
|
// in "float interpretation" between languages (e.g. JavaScript and Python)
|
|
export const API_PATH = 'http://localhost:9984/api/v1/'
|
|
export function asset() { return { message: `${Math.random()}` } }
|
|
export const metaData = { message: 'metaDataMessage' }
|
|
|
|
export const alice = new Ed25519Keypair()
|
|
export const aliceCondition = Transaction.makeEd25519Condition(alice.publicKey)
|
|
export const aliceOutput = Transaction.makeOutput(aliceCondition)
|
|
export const createTx = Transaction.makeCreateTransaction(
|
|
asset,
|
|
metaData,
|
|
[aliceOutput],
|
|
alice.publicKey
|
|
)
|
|
export const transferTx = Transaction.makeTransferTransaction(
|
|
[{ tx: createTx, output_index: 0 }],
|
|
[aliceOutput],
|
|
metaData
|
|
)
|
|
|
|
export const bob = new Ed25519Keypair()
|
|
export const bobCondition = Transaction.makeEd25519Condition(bob.publicKey)
|
|
export const bobOutput = Transaction.makeOutput(bobCondition)
|
|
|
|
export function delegatedSignTransaction(...keyPairs) {
|
|
return function sign(serializedTransaction, input, index) {
|
|
const transactionUniqueFulfillment = input.fulfills ? serializedTransaction
|
|
.concat(input.fulfills.transaction_id)
|
|
.concat(input.fulfills.output_index) : serializedTransaction
|
|
const transactionHash = createHash('sha3-256').update(transactionUniqueFulfillment).digest()
|
|
const filteredKeyPairs = keyPairs.filter(({ publicKey }) =>
|
|
input.owners_before.includes(publicKey))
|
|
|
|
const ed25519Fulfillment = new Ed25519Sha256()
|
|
filteredKeyPairs.forEach(keyPair => {
|
|
const privateKey = Buffer.from(base58.decode(keyPair.privateKey))
|
|
ed25519Fulfillment.sign(transactionHash, privateKey)
|
|
})
|
|
return ed25519Fulfillment.serializeUri()
|
|
}
|
|
}
|