我正在尝试使用通过 Solana 命令行生成的私钥在 JavaScript / Node.js 中创建钱包。 我想使用
web3.Keypair.fromSeed()
方法。
这是我迄今为止采取的步骤。
solana-keygen new -o keyfile.json
[237,158,92,107,132,192,1,57,8,20,213,108,29,227,37,8,3,105,196,244,8,221,184,199,62,253,98,131,33,165,165,215,14,7,46,23,221,242,240,226,94,79,161,31,192,163,13,25,106,53,34,215,83,124,162,156,8,97,194,180,213,179,33,68]
但是,对
fromSeed()
的调用只需要 32 个字节。
3.检查 solana 地址,以便我知道一切何时正常工作:
> solana address -->
wm4MapPtFaUoSsyBJppVnChYMGvHzTeAL6BNZ5GmSqH
这就是公钥
如何调用
web3.Keypair.fromSeed()
加载该私钥并获取我的公共地址(也称为公钥)?
let web3 = require('@solana/web3.js');
let splToken = require('@solana/spl-token');
// load up the first 32 bytes of the 64 byte array that was in our keyfile.json
// Only need the first 32 bytes so I use slice() just to make sure it's the correct length
let firstWinPrivKey = [237,158,92,107,132,192,1,57,8,20,213,108,29,227,37,8,3,105,196,244,8,221,184,199,62,253,98,131,33,165,165,215,14,7,46,23,221,242,240,226,94,79,161,31,192,163,13,25,106,53,34,215,83,124,162,156,8,97,194,180,213,179,33,68]
.slice(0,32);
// print the length of the array so we know it is correct
// the fromSeed() method requires 32 bytes
console.log(firstWinPrivKey.length);
let firstWinWallet = web3.Keypair.fromSeed(Uint8Array.from(firstWinPrivKey));
console.log(firstWinWallet.secretKey);
console.log(firstWinWallet.publicKey.toString());
请注意,您必须将数组转换为 Uint8Array (Uint8Array.from()) 当我们打印出 SecretKey 时,您将看到传入的相同字节。
最后,当我们打印出公钥时,您将看到与我们在命令行中看到的相同的值
> solana address
现在您可以在代码中使用钱包了。
这是这个简短脚本的最终输出:
32
Uint8Array(64) [
237, 158, 92, 107, 132, 192, 1, 57, 8, 20, 213,
108, 29, 227, 37, 8, 3, 105, 196, 244, 8, 221,
184, 199, 62, 253, 98, 131, 33, 165, 165, 215, 14,
7, 46, 23, 221, 242, 240, 226, 94, 79, 161, 31,
192, 163, 13, 25, 106, 53, 34, 215, 83, 124, 162,
156, 8, 97, 194, 180, 213, 179, 33, 68
]
wm4MapPtFaUoSsyBJppVnChYMGvHzTeAL6BNZ5GmSqH
如果你想使用“.json”文件,你可以这样做:
import Fs from "@supercharge/fs";
import { Connection, Keypair, LAMPORTS_PER_SOL } from "@solana/web3.js";
const decodedKey = new Uint8Array(
JSON.parse(
//replace with actual path from home dir. For example '.config/solana/devnet.json'
Fs.readFileSync(Fs.homeDir("path to key.json")).toString();
));
let keyPair = Keypair.fromSecretKey(decodedKey);
我使用附加包 https://www.npmjs.com/package/@supercharge/fs 来处理文件。
import { Keypair } from "@solana/web3.js";
import fs from "fs";
function loadKeypairFromFile(filename: string): Keypair {
const secret = JSON.parse(fs.readFileSync(filename).toString()) as number[];
const secretKey = Uint8Array.from(secret);
return Keypair.fromSecretKey(secretKey);
}
Solana 基金会的一些人制作了一个小包,让这一切变得更容易。
npm i @solana-developers/node-helpers @digitak/esrun
然后在
show-pubkey.ts
:
import { getKeypairFromFile } from "@solana-developers/node-helpers";
const keypair = await getKeypairFromFile();
您可以使用
npx esrun load-pubkey.ts
来运行它