问 编解码SHA256WITHECDSA - nodeJS

EN

我正试图用SHA256withECDSA解码/编码一个签名。我有一个运行良好的Java代码：

public void verify() throws Exception {
    Signature ecdsaVerify = Signature.getInstance("SHA256withECDSA"));
    EncodedKeySpec publicKeySpec = new X509EncodedKeySpec(Base64.getDecoder().decode("your public key goes here"));
    KeyFactory keyFactory = KeyFactory.getInstance("EC");
    PublicKey publicKey = keyFactory.generatePublic(publicKeySpec);
    ecdsaVerify.initVerify(publicKey);
    ecdsaVerify.update("All the webhook field values (only the values) concatenated together using a semicolon ;".getBytes("UTF-8"));
    boolean result = ecdsaVerify.verify(Base64.getDecoder().decode("Signature to verify")); //Must return true
} 

但我需要nodejs的这个解决方案。当我在nodejs中创建一个base64缓冲区时，它将得到与Java代码不同的结果。目前我使用的是密码‘s& jwa npm。

编辑：

这是我的nodejs代码：

var jwa = require("jwa");
const verifySignature = () => {
let public_key = Buffer.from("public key here", "base64");
let signature = Buffer.from("Signature_here", "base64");
let payload = "data here seperated by semicolon";
let ecdsa = jwa("ES256");
let verify = ecdsa.verify(payload, signature, public_key);
verifySignature();