错误：0909006C：PEM 例程：get_name：无起始行

如何解决错误：0909006C：PEM 例程：get_name：无起始行

我使用以下函数verify an iOS assertion object on my server：

const cbor = require("cbor");
const crypto = require("crypto");

function verifyAssertion(assertionString,clientDataString,attestKeyID) {
    // Convert Base64 string to Buffer
    let assertionBuffer = Buffer.from(assertionString,'base64');
    let clientDataBuffer = Buffer.from(clientDataString,'base64');
    try {
        let assert = cbor.decodeAllSync(assertionBuffer)[0];
        console.log(`verifyAssertion() assert: ${assert}`);
        let authData = assert.authenticatorData; // buffer
        let signature = assert.signature; // buffer
        console.log(`verifyAssertion() authData: ${authData}`);
        console.log(`verifyAssertion() signature: ${signature}`);
        // compute client Data Hash
        let clientDataHash = crypto.createHash('sha256').update(clientDataBuffer).digest('base64');
        let clientDataHashBuffer = Buffer.from(clientDataHash,'base64');
        console.log("clientDataHashBuffer: ",clientDataHashBuffer);
        // compute composite hash
        let compositeBuffer = Buffer.concat([authData,clientDataHashBuffer]);
        let nonce = crypto.createHash('sha256').update(compositeBuffer).digest('base64'); // base64 string
        let nonceBuffer = Buffer.from(nonce,'base64');
        console.log("nonce: ",nonce);
        // load public key
        console.log("attestKeyID: ",attestKeyID);
        let keyObj = crypto.createPublicKey(attestKeyID);
        console.log("keyObj: ",keyObj);
        // verify signature
        let verifier = crypto.createVerify('sha256').update(nonceBuffer);
        let sign_verify = verifier.verify(keyObj,signature);
        console.log("sign_verify: ",sign_verify);
    } catch (e) {
        console.log(`verifyAssertion() error: ${e}`);
    }
}

但是，crypto.createPublicKey(attestKeyID) 导致了以下错误：

verifyAssertion() error: Error: error:0909006C:PEM routines:get_name:no start line

这是发送以下内容的 iOS 代码：

1. 断言对象（作为 base64 字符串）

2. 客户端数据（作为 base64 字符串）

3. keyId 从 generateKey() 生成

到我的服务器：

    guard let clientData = try? JSONEncoder().encode(adjustedData) else { return }
    let clientDataHash = Data(SHA256.hash(data: clientData))
    service.generateAssertion(attestKeyID,clientDataHash: clientDataHash) { assertion,err in
        guard error == nil else { return print("generateAssertion() error: \(error)") }
        let assertionString = assertion?.base64EncodedString() ?? ""
        let clientDataString = clientData.base64EncodedString()
        adjustedData["attestKeyID"] = attestKeyID
        adjustedData["assertionString"] = assertionString
        adjustedData["clientData"] = clientDataString
        functions.httpsCallable(name).call(adjustedData){ (result,error) in
            completion(result,error)
            print("function \(name) completed")
        }
    }

知道为什么我会收到那个错误吗？