HarmonyOS 鸿蒙Next 证书解析

// 解析证书
certParseByBase64Str = (base64Str: string): ResolveResult => {
let certData = ‘-----BEGIN CERTIFICATE-----\n’ + base64Str + ‘\n-----END CERTIFICATE-----\n’;
Logger.info(‘certData=:’, certData);

let textEncoder = new util.TextEncoder();
let encodingBlob: certFramework.EncodingBlob = {
<span class="hljs-comment">// 将证书数据从string类型转换成Unit8Array data: textEncoder.encodeInto(certData),</span>

<span class="hljs-comment">// 证书格式，仅支持PEM和DER。在此示例中，证书为PEM格式</span>

encodingFormat: certFramework.EncodingFormat.FORMAT_PEM
};
let resultData: ESObject = {};
let ret: ResolveResult = {}
certFramework.createX509Cert(encodingBlob, (err, x509Cert) => {
if (err != null) {
Logger.info(‘err.message=:’, JSON.stringify(err));
  <span class="hljs-comment">// 创建X509Cert实例失败</span>

  ret = {
    iSuccessful: <span class="hljs-literal">false</span>,
    errorMsg: <span class="hljs-string">"createX509Cert failed, errCode:${err.code}, errMsg:${err.message}"</span>,
    data: resultData
  };
  <span class="hljs-keyword">return</span> ret;

} <span class="hljs-keyword">else</span> {

  <span class="hljs-keyword">try</span> {

    <span class="hljs-keyword">let</span> CN = x509Cert.getSubjectName();

    <span class="hljs-comment">// 证书的序列号</span>
    <span class="hljs-keyword">let</span> serialNumner = x509Cert.getCertSerialNumber();

    <span class="hljs-comment">// 证书有效期起始日期</span>
    <span class="hljs-keyword">let</span> notBeforeTime = x509Cert.getNotBeforeTime();

    <span class="hljs-comment">// 证书有效期截止日期</span>
    <span class="hljs-keyword">let</span> notAfterTime = x509Cert.getNotAfterTime();
    Logger.info(<span class="hljs-string">'serialNumner=:'</span>, serialNumner.toString());
    Logger.info(<span class="hljs-string">'notBeforeTime=:'</span>, notBeforeTime);
    Logger.info(<span class="hljs-string">'notAfterTime=:'</span>, notAfterTime);
    resultData = {
      serialNumner: serialNumner,
      notBeforeTime: notBeforeTime,
      notAfterTime: notAfterTime,
      CN: CN
    };

    Logger.info(<span class="hljs-string">'resultData=:'</span>, <span class="hljs-built_in">JSON</span>.stringify(resultData));
    ret = { iSuccessful: <span class="hljs-literal">true</span>, errorMsg: <span class="hljs-string">''</span>, data: resultData };
    <span class="hljs-keyword">return</span> ret;
  } <span class="hljs-keyword">catch</span> (e) {
    ret = { iSuccessful: <span class="hljs-literal">false</span>, errorMsg: <span class="hljs-string">"解析异常"</span> + e.message, data: resultData };
    <span class="hljs-keyword">return</span> ret;
  }
}
})
}<button style="position: absolute; padding: 4px 8px 0px; cursor: pointer; top: 8px; right: 8px; font-size: 14px;">复制</button>

写了一个证书解析的方法  解析后怎么返回返回出去？目前在createX509Cert这样写返回ResolveResult 报错。

还有一个疑问  

let CN = x509Cert.getSubjectName();

解析证书CN怎么获取？在官方文档上没有找到。