HarmonyOS 如何解析证书文件

import cryptoCert from '@ohos.security.cert'; 
 
toEncodingBlob(array: Uint8Array) { 
  let encodingData: Uint8Array = array; 
  let encodingBlob: cryptoCert.EncodingBlob = { 
    data: encodingData, 
    // 根据encodingData的格式进行赋值，支持FORMAT_PEM和FORMAT_DER 
    encodingFormat: cryptoCert.EncodingFormat.FORMAT_PEM 
  }; 
 
  cryptoCert.createX509Cert(encodingBlob, (error, x509Cert) => { 
    if (error != null) { 
      console.log("createX509Cert failed, errCode: " + error.code + ", errMsg: " + error.message); 
    } 
    else { 
      console.log("createX509Cert success"); 
    } 
  }); 
}