【证书算法库】cert-guideline ArkTs整改

Signed-off-by: Nhaixiangw <wanghaixiang@huawei.com>

zh-cn/application-dev/security/cert-guidelines.md

@@ -2,7 +2,7 @@
 
 > **说明**
 >
-> 本开发指导需使用API version 9及以上版本SDK，仅适用于JS语言开发。
+> 本开发指导需使用API version 9及以上版本SDK。
 
 ## 使用证书操作
 
@@ -53,107 +53,94 @@
 
 示例：解析X509证书数据生成证书对象，并调用对象方法（包含场景1-6）
 
-```javascript
-import cryptoCert from '@ohos.security.cert';
-import cryptoFramework from '@ohos.security.cryptoFramework';
+```ts
+import certFramework from '@ohos.security.cert';
+import { BusinessError } from '@ohos.base';
+
+// Certificate data, which is only an example. The certificate data varies with the service.
+let certData = '-----BEGIN CERTIFICATE-----\n' +
+  'MIIBLzCB1QIUO/QDVJwZLIpeJyPjyTvE43xvE5cwCgYIKoZIzj0EAwIwGjEYMBYG\n' +
+  'A1UEAwwPRXhhbXBsZSBSb290IENBMB4XDTIzMDkwNDExMjAxOVoXDTI2MDUzMDEx\n' +
+  'MjAxOVowGjEYMBYGA1UEAwwPRXhhbXBsZSBSb290IENBMFkwEwYHKoZIzj0CAQYI\n' +
+  'KoZIzj0DAQcDQgAEHjG74yMIueO7z3T+dyuEIrhxTg2fqgeNB3SGfsIXlsiUfLTa\n' +
+  'tUsU0i/sePnrKglj2H8Abbx9PK0tsW/VgqwDIDAKBggqhkjOPQQDAgNJADBGAiEA\n' +
+  '0ce/fvA4tckNZeB865aOApKXKlBjiRlaiuq5mEEqvNACIQDPD9WyC21MXqPBuRUf\n' +
+  'BetUokslUfjT6+s/X4ByaxycAA==\n' +
+  '-----END CERTIFICATE-----\n';
+
+// Convert the certificate data form a string to a Uint8Array.
+function stringToUint8Array(str: string): Uint8Array {
+  let arr: Array<number> = [];
+  for (let i = 0, j = str.length; i < j; i++) {
+    arr.push(str.charCodeAt(i));
+  }
+  return new Uint8Array(arr);
+}
+
+// Certificate example
+function certSample(): void {
+  let encodingBlob: certFramework.EncodingBlob = {
+    // Convert the certificate data string to a Uint8Array.
+    data: stringToUint8Array(certData),
+    // Certificate format. Only PEM and DER are supported. In this example, the certificate is in PEM format.
+    encodingFormat: certFramework.EncodingFormat.FORMAT_PEM
+  };
 
-// 证书数据，此处仅示例，业务需根据场景自行设置
-let certData = "-----BEGIN CERTIFICATE-----\n"
-+ "MIID/jCCAuagAwIBAgIBATANBgkqhkiG9w0BAQsFADCBjDELMAkGA1UEBhMCQ04x\n"
-+ "ETAPBgNVBAgMCHNoYW5naGFpMQ8wDQYDVQQHDAZodWF3ZWkxFTATBgNVBAoMDHd3\n"
-+ "dy50ZXN0LmNvbTENMAsGA1UECwwEdGVzdDEVMBMGA1UEAwwMd3d3LnRlc3QuY29t\n"
-+ "MRwwGgYJKoZIhvcNAQkBFg10ZXN0QHRlc3QuY29tMB4XDTIyMDgyOTA2NTUwM1oX\n"
-+ "DTIzMDgyOTA2NTUwM1owezELMAkGA1UEBhMCQ04xETAPBgNVBAgMCHNoYW5naGFp\n"
-+ "MRUwEwYDVQQKDAx3d3cudGVzdC5jb20xDTALBgNVBAsMBHRlc3QxFTATBgNVBAMM\n"
-+ "DHd3dy50ZXN0LmNvbTEcMBoGCSqGSIb3DQEJARYNdGVzdEB0ZXN0LmNvbTCCASIw\n"
-+ "DQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAJmY9T4SzXXwKvfMvnvMWY7TqUJK\n"
-+ "jnWf2Puv0YUQ2fdvyoKQ2LQXdtzoUL53j587oI+IXelOr7dg020zPyun0cmZHZ4y\n"
-+ "l/qAcrWbDjZeEGcbbb5UtQtn1WOEnv8pkXluO355mbZQUKK9L3gFWseXJKGbIXw0\n"
-+ "NRpaJZzqvPor4m3a5pmJKPHOlivUdYfLaKSkNj3DlaFzCWKV82k5ee6gzVyETtG+\n"
-+ "XN+vq8qLybT+fIFsLNMmAHzRxlqz3NiH7yh+1/p/Knvf8bkkRVR2btH51RyX2RSu\n"
-+ "DjPM0/VRL8fxDSDeWBq+Gvn/E6AbOVMmkx63tcyWHhklCSaZtyz7kq39TQMCAwEA\n"
-+ "AaN7MHkwCQYDVR0TBAIwADAsBglghkgBhvhCAQ0EHxYdT3BlblNTTCBHZW5lcmF0\n"
-+ "ZWQgQ2VydGlmaWNhdGUwHQYDVR0OBBYEFFiFDysfADQCzRZCOSPupQxFicwzMB8G\n"
-+ "A1UdIwQYMBaAFNYQRQiPsG8HefOTsmsVhaVjY7IPMA0GCSqGSIb3DQEBCwUAA4IB\n"
-+ "AQAeppxf6sKQJxJQXKPTT3xHKaskidNwDBbOSIvnVvWXicZXDs+1sF6tUaRgvPxL\n"
-+ "OL58+P2Jy0tfSwj2WhqQRGe9MvQ5iFHcdelZc0ciW6EQ0VDHIaDAQc2nQzej/79w\n"
-+ "UE7BJJV3b9n1be2iCsuodKO14pOkMb84WcIxng+8SD+MiFqV5BPO1QyKGdO1PE1b\n"
-+ "+evjyTpFSTgZf2Mw3fGtu5hfEXyHw1lnsFY2MlSwiRlAym/gm4aXy+4H6LyXKd56\n"
-+ "UYQ6fituD0ziaw3RI6liyIe7aENHCkZf6bAvMRhk4QiU4xu6emwX8Qt1bT7RthP0\n"
-+ "1Vsro0IOeXT9WAcqEtQUegsi\n"
-+ "-----END CERTIFICATE-----\n";
-
-// string转Uint8Array
-function stringToUint8Array(str) {
-    var arr = [];
-    for (var i = 0, j = str.length; i < j; i++) {
-        arr.push(str.charCodeAt(i));
+  // Create an X509Cert instance.
+  certFramework.createX509Cert(encodingBlob, (err, x509Cert) => {
+    if (err != null) {
+      // Failed to create the X509Cert instance.
+      console.error('createX509Cert failed, errCode: ' + err.code + ', errMsg: ' + err.message);
+      return;
     }
-    return new Uint8Array(arr);
-}
+    // The X509Cert instance is successfully created.
+    console.log('createX509Cert success');
+
+    // Obtain the certificate version.
+    let version = x509Cert.getVersion();
+
+    // Obtain the serialized data of the certificate.
+    x509Cert.getEncoded((err, data) => {
+      if (err != null) {
+        // Failed to obtain the serialized data of the certificate.
+        console.error('getEncoded failed, errCode: ' + err.code + ', errMsg: ' + err.message);
+      } else {
+        // The serialized data of the certificate is successfully obtained.
+        console.log('getEncoded success');
+      }
+    });
 
-// 证书示例
-function certSample() {
-    let encodingBlob = {
-        // 将string类型证书数据转为Uint8Array
-        data: stringToUint8Array(certData),
-        // 证书格式：支持PEM和DER，此例中对应PEM
-        encodingFormat: cryptoCert.EncodingFormat.FORMAT_PEM
-    };
+    // Obtain the public key object using the getPublicKey() of the upper-level certificate object or this (self-signed) certificate object.
+    try {
+      let pubKey = x509Cert.getPublicKey();
 
-    // 创建证书对象
-    cryptoCert.createX509Cert(encodingBlob, function (err, x509Cert) {
-        if (err != null) {
-            // 创建证书对象失败
-            console.log("createX509Cert failed, errCode: " + err.code + ", errMsg: " + err.message);
-            return;
+      // Verify the certificate signature.
+      x509Cert.verify(pubKey, (err, data) => {
+        if (err == null) {
+          // The signature verification is successful.
+          console.log('verify success');
+        } else {
+          // The signature verification failed.
+          console.error('verify failed, errCode: ' + err.code + ', errMsg: ' + err.message);
         }
-        // 创建证书对象成功
-        console.log("createX509Cert success");
-
-        // 获取证书版本
-        let version = x509Cert.getVersion();
-        
-        // 获取证书对象的序列化数据
-        x509Cert.getEncoded(function (err, data) {
-            if (err != null) {
-                // 获取序列化数据失败
-                console.log("getEncoded failed, errCode: " + err.code + ", errMsg: " + err.message);
-            } else {
-                // 获取序列化数据成功
-                console.log("getEncoded success");
-            }
-        });
+      });
+    } catch (error) {
+      let e: BusinessError = error as BusinessError;
+      console.error('getPublicKey failed, errCode: ' + e.code + ', errMsg: ' + e.message);
+    }
 
-        // 业务需通过上级证书对象或本证书对象(自签名)的getPublicKey接口获取公钥对象，此处省略
-        let pubKey = null;
-        try {
-            pubKey = x509Cert.getPublicKey();
-        } catch (error) {
-            console.log("getPublicKey failed, errCode: " + error.code + ", errMsg: " + error.message);
-        }
 
-        // 证书验签
-        x509Cert.verify(pubKey, function (err, data) {
-            if (err == null) {
-                // 验签成功
-                console.log("verify success");
-            } else {
-                // 验签失败
-                console.log("verify failed, errCode: " + err.code + ", errMsg: " + err.message);
-            }
-        });
+    // Time represented in a string.
+    let date = '20230930000001Z';
 
-        // 时间字符串
-        let date = "20220830000001Z";
-        
-        // 校验证书有效期
-        try {
-            x509Cert.checkValidityWithDate(date);
-        } catch (error) {
-            console.log("checkValidityWithDate failed, errCode: " + error.code + ", errMsg: " + error.message);
-        }
-    });
+    // Verify the certificate validity period.
+    try {
+      x509Cert.checkValidityWithDate(date);
+    } catch (error) {
+      let e: BusinessError = error as BusinessError;
+      console.error('checkValidityWithDate failed, errCode: ' + e.code + ', errMsg: ' + e.message);
+    }
+  });
 }
 ```
 
@@ -161,7 +148,7 @@ function certSample() {
 
 > **说明**
 >
-> 本场景基于API version 10，OH SDK版本4.0.9及以上，适用于JS语言开发
+> 本场景基于API version 10，OH SDK版本4.0.9及以上。
 
 **场景说明**
 
@@ -190,67 +177,70 @@ function certSample() {
 
 示例：解析X509证书扩展域段数据生成证书扩展域段对象，并调用对象方法（包含场景1-3）
 
-```javascript
-import cryptoCert from '@ohos.security.cert';
+```ts
+import certFramework from '@ohos.security.cert';
+import { BusinessError } from '@ohos.base';
 
-// 证书扩展域段数据，此处仅示例，业务需根据场景自行设置
-let certData = new Uint8Array([
-  0x30, 0x40, 0x30, 0x0F, 0x06, 0x03, 0x55, 0x1D, 
+// Certificate extension data, which is only an example. Set it based on service requirements.
+let extData = new Uint8Array([
+  0x30, 0x40, 0x30, 0x0F, 0x06, 0x03, 0x55, 0x1D,
   0x13, 0x01, 0x01, 0xFF, 0x04, 0x05, 0x30, 0x03,
-  0x01, 0x01, 0xFF, 0x30, 0x0E, 0x06, 0x03, 0x55, 
+  0x01, 0x01, 0xFF, 0x30, 0x0E, 0x06, 0x03, 0x55,
   0x1D, 0x0F, 0x01, 0x01, 0xFF, 0x04, 0x04, 0x03,
-  0x02, 0x01, 0xC6, 0x30, 0x1D, 0x06, 0x03, 0x55, 
+  0x02, 0x01, 0xC6, 0x30, 0x1D, 0x06, 0x03, 0x55,
   0x1D, 0x0E, 0x04, 0x16, 0x04, 0x14, 0xE0, 0x8C,
-  0x9B, 0xDB, 0x25, 0x49, 0xB3, 0xF1, 0x7C, 0x86, 
+  0x9B, 0xDB, 0x25, 0x49, 0xB3, 0xF1, 0x7C, 0x86,
   0xD6, 0xB2, 0x42, 0x87, 0x0B, 0xD0, 0x6B, 0xA0,
   0xD9, 0xE4
 ]);
 
-// string转Uint8Array
-function stringToUint8Array(str) {
-  var arr = [];
-  for (var i = 0, j = str.length; i < j; i++) {
+// Convert the string into a Uint8Array.
+function stringToUint8Array(str: string): Uint8Array {
+  let arr: Array<number> = [];
+  for (let i = 0, j = str.length; i < j; i++) {
     arr.push(str.charCodeAt(i));
   }
   return new Uint8Array(arr);
 }
 
-// 证书扩展域段示例
-function certExtensionSample() {
-  let encodingBlob = {
-    data: certData,
-    // 证书扩展域段格式：当前仅支持DER格式
-    encodingFormat: cryptoCert.EncodingFormat.FORMAT_DER
+// Certificate extension example.
+function certExtensionSample(): void {
+  let encodingBlob: certFramework.EncodingBlob = {
+    data: extData,
+    // Certificate extension format. Currently, only the DER format is supported.
+    encodingFormat: certFramework.EncodingFormat.FORMAT_DER
   };
 
-  // 创建证书扩展域段对象
-  cryptoCert.createCertExtension(encodingBlob, function (err, certExtension) {
+  // Create a CerExtension instance.
+  certFramework.createCertExtension(encodingBlob, (err, certExtension) => {
     if (err != null) {
-      // 创建证书扩展域段对象失败
-      console.log("createCertExtension failed, errCode: " + err.code + ", errMsg: " + err.message);
+      // The CerExtension instance fails to be created.
+      console.error('createCertExtension failed, errCode: ' + err.code + ', errMsg: ' + err.message);
       return;
     }
-    // 创建证书扩展域段对象成功
-    console.log("createCertExtension success");
-    
+    // A CerExtension instance is created.
+    console.log('createCertExtension success');
+
     try {
-      // 获取证书扩展域段对象的序列化数据
+      // Obtain the serialized data of the CerExtension instance.
       let encodedData = certExtension.getEncoded();
-      
-      // 获取证书扩展域段对象的对象标识符列表
-      let oidList = certExtension.getOidList(cryptoCert.ExtensionOidType.EXTENSION_OID_TYPE_ALL);
-      
-      // 根据对象标识符获取证书扩展域段信息
-      let oidData = "2.5.29.14";
-      let oid = {
+
+      // Obtain the OIDs of the certificate extensions.
+      let oidList = certExtension.getOidList(certFramework.ExtensionOidType.EXTENSION_OID_TYPE_ALL);
+
+      // Obtain the certificate extension information based on a OID.
+      let oidData = '2.5.29.14';
+      let oid: certFramework.DataBlob = {
         data: stringToUint8Array(oidData),
       }
-      let entry = certExtension.getEntry(cryptoCert.ExtensionEntryType.EXTENSION_ENTRY_TYPE_ENTRY, oid);
-        
-      // 校验证书是否为CA证书
+      let entry = certExtension.getEntry(certFramework.ExtensionEntryType.EXTENSION_ENTRY_TYPE_ENTRY, oid);
+
+      // Check whether the certificate is a CA certificate.
       let pathLen = certExtension.checkCA();
+      console.log('test cert extension success');
     } catch (err) {
-      console.log("operation failed: " + JSON.stringify(err));
+      let e: BusinessError = err as BusinessError;
+      console.error('operation failed, message: ' + e.message + ' code: ' + e.code);
     }
   });
 }
@@ -303,98 +293,194 @@ function certExtensionSample() {
 
 示例：解析X509证书吊销列表数据生成证书吊销列表对象，并调用对象方法（包含场景1-6）
 
-```javascript
-import cryptoCert from '@ohos.security.cert';
+```ts
+import certFramework from '@ohos.security.cert';
 import cryptoFramework from '@ohos.security.cryptoFramework';
+import { BusinessError } from '@ohos.base';
+
+// CRL data, which is only an example. The CRL data varies with the service.
+let crlData = '-----BEGIN X509 CRL-----\n' +
+  'MIHzMF4CAQMwDQYJKoZIhvcNAQEEBQAwFTETMBEGA1UEAxMKQ1JMIGlzc3VlchcN\n' +
+  'MTcwODA3MTExOTU1WhcNMzIxMjE0MDA1MzIwWjAVMBMCAgPoFw0zMjEyMTQwMDUz\n' +
+  'MjBaMA0GCSqGSIb3DQEBBAUAA4GBACEPHhlaCTWA42ykeaOyR0SGQIHIOUR3gcDH\n' +
+  'J1LaNwiL+gDxI9rMQmlhsUGJmPIPdRs9uYyI+f854lsWYisD2PUEpn3DbEvzwYeQ\n' +
+  '5SqQoPDoM+YfZZa23hoTLsu52toXobP74sf/9K501p/+8hm4ROMLBoRT86GQKY6g\n' +
+  'eavsH0Q3\n' +
+  '-----END X509 CRL-----\n'
+
+
+let certData = '-----BEGIN CERTIFICATE-----\n' +
+  'MIIBLzCB1QIUO/QDVJwZLIpeJyPjyTvE43xvE5cwCgYIKoZIzj0EAwIwGjEYMBYG\n' +
+  'A1UEAwwPRXhhbXBsZSBSb290IENBMB4XDTIzMDkwNDExMjAxOVoXDTI2MDUzMDEx\n' +
+  'MjAxOVowGjEYMBYGA1UEAwwPRXhhbXBsZSBSb290IENBMFkwEwYHKoZIzj0CAQYI\n' +
+  'KoZIzj0DAQcDQgAEHjG74yMIueO7z3T+dyuEIrhxTg2fqgeNB3SGfsIXlsiUfLTa\n' +
+  'tUsU0i/sePnrKglj2H8Abbx9PK0tsW/VgqwDIDAKBggqhkjOPQQDAgNJADBGAiEA\n' +
+  '0ce/fvA4tckNZeB865aOApKXKlBjiRlaiuq5mEEqvNACIQDPD9WyC21MXqPBuRUf\n' +
+  'BetUokslUfjT6+s/X4ByaxycAA==\n' +
+  '-----END CERTIFICATE-----\n';
+
+let pubKeyData = new Uint8Array([
+  0x30, 0x81, 0x9F, 0x30, 0x0D, 0x06, 0x09, 0x2A, 0x86, 0x48, 0x86, 0xF7, 0x0D, 0x01, 0x01, 0x01,
+  0x05, 0x00, 0x03, 0x81, 0x8D, 0x00, 0x30, 0x81, 0x89, 0x02, 0x81, 0x81, 0x00, 0xDC, 0x4C, 0x2D,
+  0x57, 0x49, 0x3D, 0x42, 0x52, 0x1A, 0x09, 0xED, 0x3E, 0x90, 0x29, 0x51, 0xF7, 0x70, 0x15, 0xFE,
+  0x76, 0xB0, 0xDB, 0xDF, 0xA1, 0x2C, 0x6C, 0x67, 0x95, 0xDA, 0x63, 0x3D, 0x4F, 0x71, 0x48, 0x8C,
+  0x3E, 0xFA, 0x24, 0x79, 0xE9, 0xF2, 0xF2, 0x20, 0xCB, 0xF1, 0x59, 0x6B, 0xED, 0xC8, 0x72, 0x66,
+  0x6E, 0x31, 0xD4, 0xF3, 0xCE, 0x0B, 0x12, 0xC4, 0x17, 0x39, 0xB4, 0x52, 0x16, 0xD3, 0xE3, 0xC0,
+  0xF8, 0x48, 0xB3, 0xF6, 0x40, 0xD5, 0x47, 0x23, 0x30, 0x7F, 0xA7, 0xC5, 0x5A, 0x5A, 0xBB, 0x5C,
+  0x7B, 0xEF, 0x69, 0xE2, 0x74, 0x35, 0x24, 0x22, 0x25, 0x45, 0x7E, 0xFC, 0xE8, 0xC4, 0x52, 0x65,
+  0xA0, 0x4E, 0xBC, 0xFD, 0x3F, 0xD9, 0x85, 0x14, 0x8A, 0x5A, 0x93, 0x02, 0x24, 0x6C, 0x19, 0xBA,
+  0x81, 0xBE, 0x65, 0x2E, 0xCB, 0xBB, 0xE9, 0x91, 0x7B, 0x7C, 0x47, 0xC2, 0x61, 0x02, 0x03, 0x01,
+  0x00, 0x01
+]);
 
-// 证书吊销列表数据，此处仅示例，业务需根据场景自行设置
-let crlData = "-----BEGIN X509 CRL-----\n"
-+ "MIIBijB0AgEBMA0GCSqGSIb3DQEBCwUAMBMxETAPBgNVBAMMCHJvb3QtY2ExFw0y\n"
-+ "MDA2MTkxNjE1NDhaFw0yMDA3MTkxNjE1NDhaMBwwGgIJAMsozRATnap1Fw0yMDA2\n"
-+ "MTkxNjEyMDdaoA8wDTALBgNVHRQEBAICEAIwDQYJKoZIhvcNAQELBQADggEBACPs\n"
-+ "9gQB+djaXPHHRmAItebZpD3iJ/e36Dxr6aMVkn9FkI8OVpUI4RNcCrywyCZHQJte\n"
-+ "995bbPjP7f1sZstOTZS0fDPgJ5SPAxkKOQB+SQnBFrlZSsxoUNU60gRqd2imR0Rn\n"
-+ "1r09rP69F6E4yPc9biEld+llLGgoImP3zPOVDD6fbfcvVkjStY3bssVEQ/vjp4a3\n"
-+ "/I12U7ZnSe3jaKqaQBoVJppkTFOIOq7IOxf5/IkMPmvRHDeC2IzDMzcUxym0dkny\n"
-+ "EowHrjzo0bZVqpHMA2YgKZuwTpVLHk9GeBEK2hVkIoPVISkmiU4HFg0S6z68C5yd\n"
-+ "DrAA7hErVgXhtURLbAI=\n"
-+ "-----END X509 CRL-----\n";
-
-// string转Uint8Array
-function stringToUint8Array(str) {
-    var arr = [];
-    for (var i = 0, j = str.length; i < j; i++) {
-        arr.push(str.charCodeAt(i));
-    }
-    return new Uint8Array(arr);
+let priKeyData = new Uint8Array([
+  0x30, 0x82, 0x02, 0x77, 0x02, 0x01, 0x00, 0x30, 0x0D, 0x06, 0x09, 0x2A, 0x86, 0x48, 0x86, 0xF7,
+  0x0D, 0x01, 0x01, 0x01, 0x05, 0x00, 0x04, 0x82, 0x02, 0x61, 0x30, 0x82, 0x02, 0x5D, 0x02, 0x01,
+  0x00, 0x02, 0x81, 0x81, 0x00, 0xDC, 0x4C, 0x2D, 0x57, 0x49, 0x3D, 0x42, 0x52, 0x1A, 0x09, 0xED,
+  0x3E, 0x90, 0x29, 0x51, 0xF7, 0x70, 0x15, 0xFE, 0x76, 0xB0, 0xDB, 0xDF, 0xA1, 0x2C, 0x6C, 0x67,
+  0x95, 0xDA, 0x63, 0x3D, 0x4F, 0x71, 0x48, 0x8C, 0x3E, 0xFA, 0x24, 0x79, 0xE9, 0xF2, 0xF2, 0x20,
+  0xCB, 0xF1, 0x59, 0x6B, 0xED, 0xC8, 0x72, 0x66, 0x6E, 0x31, 0xD4, 0xF3, 0xCE, 0x0B, 0x12, 0xC4,
+  0x17, 0x39, 0xB4, 0x52, 0x16, 0xD3, 0xE3, 0xC0, 0xF8, 0x48, 0xB3, 0xF6, 0x40, 0xD5, 0x47, 0x23,
+  0x30, 0x7F, 0xA7, 0xC5, 0x5A, 0x5A, 0xBB, 0x5C, 0x7B, 0xEF, 0x69, 0xE2, 0x74, 0x35, 0x24, 0x22,
+  0x25, 0x45, 0x7E, 0xFC, 0xE8, 0xC4, 0x52, 0x65, 0xA0, 0x4E, 0xBC, 0xFD, 0x3F, 0xD9, 0x85, 0x14,
+  0x8A, 0x5A, 0x93, 0x02, 0x24, 0x6C, 0x19, 0xBA, 0x81, 0xBE, 0x65, 0x2E, 0xCB, 0xBB, 0xE9, 0x91,
+  0x7B, 0x7C, 0x47, 0xC2, 0x61, 0x02, 0x03, 0x01, 0x00, 0x01, 0x02, 0x81, 0x80, 0x5A, 0xCF, 0x0F,
+  0xF5, 0xA6, 0x1C, 0x19, 0x65, 0x8C, 0x94, 0x40, 0xF6, 0x84, 0x28, 0x74, 0x40, 0x42, 0x34, 0xDE,
+  0xC3, 0x00, 0x5E, 0x72, 0x4D, 0x96, 0xE9, 0x4C, 0xBD, 0xC9, 0xDB, 0x14, 0x9F, 0xD5, 0xBB, 0xA9,
+  0x0C, 0x20, 0xC2, 0xBE, 0x7A, 0x80, 0x89, 0xEC, 0x99, 0x04, 0xF0, 0xEE, 0x7B, 0x83, 0x20, 0x1D,
+  0x37, 0x19, 0x55, 0x85, 0xF6, 0x8E, 0x3B, 0xFB, 0x16, 0xF3, 0xD3, 0x6F, 0xEE, 0x73, 0x12, 0x53,
+  0xCA, 0x77, 0xD7, 0x6C, 0x29, 0xF5, 0x08, 0xA3, 0x09, 0x01, 0x0B, 0x00, 0x05, 0x57, 0xAD, 0x4D,
+  0xF0, 0x92, 0xB2, 0x5A, 0x8B, 0x19, 0x09, 0x81, 0x86, 0xFE, 0x66, 0xB9, 0x33, 0x88, 0x28, 0xF3,
+  0x37, 0x73, 0x09, 0x5F, 0xD7, 0xC9, 0xC6, 0xFA, 0x13, 0x74, 0xFE, 0xAE, 0x53, 0xA9, 0x71, 0x67,
+  0xCE, 0x3A, 0xE6, 0x8D, 0x35, 0xD1, 0xB8, 0xFD, 0x6F, 0x0D, 0x43, 0xC2, 0xD1, 0x02, 0x41, 0x00,
+  0xF7, 0x33, 0xE5, 0x6C, 0x29, 0x5A, 0x30, 0x58, 0xA4, 0x52, 0x65, 0xA0, 0x39, 0xC2, 0xE8, 0xAE,
+  0x5F, 0xA3, 0x2D, 0x0C, 0x65, 0xB1, 0x7B, 0xFD, 0x92, 0xBF, 0x47, 0x87, 0x97, 0x40, 0xCB, 0x54,
+  0xF9, 0xBB, 0x50, 0x27, 0x70, 0x51, 0xD0, 0xD8, 0x48, 0x0D, 0xC6, 0x47, 0x60, 0xF8, 0x4E, 0x0A,
+  0x32, 0x76, 0x6D, 0xA4, 0xBA, 0x40, 0xE5, 0x58, 0xF8, 0x4A, 0x39, 0x4E, 0xF8, 0x3F, 0x4E, 0x2D,
+  0x02, 0x41, 0x00, 0xE4, 0x23, 0x2A, 0x5F, 0x59, 0xCF, 0x7C, 0x91, 0x24, 0x0D, 0xA2, 0x44, 0x17,
+  0xCD, 0x37, 0xDE, 0x1F, 0x53, 0x4D, 0x33, 0x9F, 0x90, 0x4D, 0xD9, 0x72, 0x64, 0x25, 0xBA, 0xAB,
+  0x47, 0x91, 0xC4, 0x99, 0x95, 0x86, 0xB5, 0x8A, 0xEA, 0x77, 0xF7, 0x64, 0x72, 0x5E, 0xB7, 0xBB,
+  0x16, 0xA1, 0x64, 0xA4, 0xE1, 0x2D, 0x76, 0x6D, 0xEF, 0xB1, 0x5E, 0xD6, 0x17, 0xE8, 0xAA, 0xB6,
+  0xA0, 0xD9, 0x85, 0x02, 0x41, 0x00, 0xDF, 0xC8, 0x5B, 0x28, 0x4F, 0x47, 0x15, 0xFD, 0x28, 0xC4,
+  0x6E, 0xBB, 0x5D, 0x8E, 0xD4, 0x95, 0x06, 0x7E, 0xF1, 0x89, 0x07, 0x86, 0x64, 0x78, 0x69, 0x20,
+  0x3F, 0xE0, 0xBF, 0x4C, 0x28, 0xC6, 0x04, 0x4D, 0x4D, 0x82, 0x66, 0x6B, 0xAA, 0x64, 0x20, 0xD6,
+  0x57, 0x68, 0xC6, 0xA0, 0x02, 0x05, 0xB9, 0x28, 0xFC, 0x98, 0xE3, 0x03, 0x5C, 0x9B, 0xEE, 0x29,
+  0x43, 0x37, 0xFA, 0x03, 0x55, 0x01, 0x02, 0x40, 0x69, 0x5B, 0x7C, 0x24, 0x10, 0xDB, 0xEB, 0x91,
+  0x33, 0xEF, 0x3F, 0xF2, 0xE6, 0x73, 0x15, 0xCB, 0xF4, 0xF7, 0x89, 0x7D, 0xBF, 0xC0, 0xEA, 0xD2,
+  0xF3, 0x2B, 0x20, 0xE9, 0x76, 0x54, 0x55, 0x13, 0x50, 0x42, 0x67, 0xB5, 0xCB, 0x73, 0xC0, 0xF7,
+  0x75, 0x62, 0x04, 0x30, 0x21, 0xAC, 0xAF, 0xD8, 0x44, 0xF4, 0xE1, 0x04, 0x02, 0x7D, 0x61, 0x92,
+  0x84, 0x99, 0x02, 0x10, 0x64, 0xCB, 0x1F, 0xE9, 0x02, 0x41, 0x00, 0xAB, 0x4B, 0x7D, 0x90, 0x7C,
+  0x57, 0x08, 0x6B, 0xC0, 0x43, 0x72, 0x09, 0x8A, 0x18, 0x35, 0x36, 0x64, 0x9D, 0x84, 0x8D, 0xF1,
+  0x84, 0x94, 0x48, 0xC6, 0x80, 0x9D, 0xB9, 0xA2, 0x58, 0x0A, 0x4D, 0x0A, 0xCA, 0x1E, 0xD6, 0x05,
+  0x55, 0x5B, 0xFE, 0xD7, 0xAA, 0x70, 0xED, 0x76, 0xB3, 0x40, 0x2E, 0xA0, 0xB3, 0x32, 0x37, 0xB0,
+  0xA0, 0xB9, 0x96, 0x2D, 0xC4, 0x70, 0xE9, 0x99, 0x10, 0x67, 0x8D
+]);
+
+// Convert the certificate data form a string to a Uint8Array.
+function stringToUint8Array(str: string): Uint8Array {
+  let arr: Array<number> = [];
+  for (let i = 0, j = str.length; i < j; i++) {
+    arr.push(str.charCodeAt(i));
+  }
+  return new Uint8Array(arr);
 }
 
-// 证书吊销列表示例
-function crlSample() {
-    let encodingBlob = {
-        // 将string类型证书吊销列表数据转为Uint8Array
-        data: stringToUint8Array(crlData),
-        // 证书吊销列表格式：支持PEM和DER，此例中对应PEM
-        encodingFormat: cryptoCert.EncodingFormat.FORMAT_PEM
-    };
+// Example of a CRL.
+function crlSample(): void {
+  let encodingBlob: certFramework.EncodingBlob = {
+    // Convert the CRL data from a string to a Uint8Array.
+    data: stringToUint8Array(crlData),
+    // CRL format. Only PEM and DER are supported. In this example, the CRL is in PEM format.
+    encodingFormat: certFramework.EncodingFormat.FORMAT_PEM
+  };
 
-    // 创建证书吊销列表对象
-    cryptoCert.createX509Crl(encodingBlob, function (err, x509Crl) {
-        if (err != null) {
-            // 创建证书吊销列表对象失败
-            console.log("createX509Crl failed, errCode: " + err.code + ", errMsg: " + err.message);
-            return;
-        }
-        // 创建证书吊销列表对象成功
-        console.log("createX509Crl success");
-
-        // 获取证书吊销列表版本
-        let version = x509Crl.getVersion();
-        
-        // 获取证书吊销列表对象的序列化数据
-        x509Crl.getEncoded(function (err, data) {
-            if (err != null) {
-                // 获取序列化数据失败
-                console.log("getEncoded failed, errCode: " + err.code + ", errMsg: " + err.message);
-            } else {
-                // 获取序列化数据成功
-                console.log("getEncoded success");
-            }
-        });
+  // Create an X509Crl instance.
+  certFramework.createX509Crl(encodingBlob, (err, x509Crl) => {
+    if (err != null) {
+      // Failed to create the X509Crl instance.
+      console.error('createX509Crl failed, errCode: ' + err.code + ', errMsg: ' + err.message);
+      return;
+    }
+    // The X509Crl instance is successfully created.
+    console.log('createX509Crl success');
+
+    // Obtain the CRL version.
+    let version = x509Crl.getVersion();
+
+    // Obtain the serialized data of the CRL.
+    x509Crl.getEncoded((err, data) => {
+      if (err != null) {
+        // Failed to obtain the serialized data of the certificate.
+        console.error('getEncoded failed, errCode: ' + err.code + ', errMsg: ' + err.message);
+      } else {
+        // The serialized data of the certificate is successfully obtained.
+        console.log('getEncoded success');
+      }
+    });
 
-        // 业务需通过cryptoFramework的createX509Cert生成X509Cert证书对象，此处省略
-        let x509Cert = null;
-        // 检查证书是否被吊销
+    // Create an X509Cert instance by using createX509Cert() of certFramework.
+    let certBlob: certFramework.EncodingBlob = {
+      data: stringToUint8Array(certData),
+      encodingFormat: certFramework.EncodingFormat.FORMAT_PEM
+    };
+    certFramework.createX509Cert(certBlob, (err, cert) => {
+      if (err == null) {
         try {
-            let revokedFlag = x509Crl.isRevoked(x509Cert);
+          // Check whether the certificate is revoked.
+          let revokedFlag = x509Crl.isRevoked(cert);
+          console.log('revokedFlag is: ' + revokedFlag);
         } catch (error) {
-           console.log("isRevoked failed, errCode: " + error.code + ", errMsg: " + error.message);
+          let e: BusinessError = error as BusinessError;
+          console.error('isRevoked failed, errCode: ' + e.code + ', errMsg: ' + e.message);
         }
+      } else {
+        console.error('create x509 cert failed errCode: ' + err.code + ', errMsg: ' + err.message);
+      }
+    })
 
-        // 业务需通过将public key二进制数据输入 @ohos.security.cryptoFramework的convertKey接口获取PubKey对象，此处省略
-        let pubKey = null;
-        
-        // 证书吊销列表验签
-        x509Crl.verify(pubKey, function (err, data) {
+    // The binary data of the public key needs to be passed to convertKey() of @ohos.security.cryptoFramework to obtain the PubKey object. The process is omitted here.
+    try {
+      let keyGenerator = cryptoFramework.createAsyKeyGenerator('RSA1024|PRIMES_3');
+      console.log('createAsyKeyGenerator success');
+      let priEncodingBlob: cryptoFramework.DataBlob = {
+        data: priKeyData,
+      };
+      let pubEncodingBlob: cryptoFramework.DataBlob = {
+        data: pubKeyData,
+      };
+      keyGenerator.convertKey(pubEncodingBlob, priEncodingBlob, (e, keyPair) => {
+        if (e == null) {
+          console.log('convert key success');
+          x509Crl.verify(keyPair.pubKey, (err, data) => {
             if (err == null) {
-                // 验签成功
-                console.log("verify success");
+              // The signature verification is successful.
+              console.log('verify success');
             } else {
-                // 验签失败
-                console.log("verify failed, errCode: " + err.code + ", errMsg: " + err.message);
+              // The signature verification failed.
+              console.error('verify failed, errCode: ' + err.code + ', errMsg: ' + err.message);
             }
-        });
+          });
+        } else {
+          console.error('convert key failed, message: ' + e.message + 'code: ' + e.code);
+        }
+      })
+    } catch (error) {
+      let e: BusinessError = error as BusinessError;
+      console.error('get pubKey failed, errCode: ' + e.code + ', errMsg: ' + e.message);
+    }
 
-        // 证书序列号，业务需自行设置
-        let serialNumber = 1000;
+    // Certificate serial number, which must be set based on the service.
+    let serialNumber = 1000;
 
-        // 获取被吊销证书对象
-        try {
-            let entry = x509Crl.getRevokedCert(serialNumber);
-        } catch (error) {
-           console.log("getRevokedCert failed, errCode: " + error.code + ", errMsg: " + error.message);
-        }
-    });
+    // Obtain the revoked certificate based on the serial number.
+    try {
+      let entry = x509Crl.getRevokedCert(serialNumber);
+      console.log('get getRevokedCert success');
+    } catch (error) {
+      let e: BusinessError = error as BusinessError;
+      console.error('getRevokedCert failed, errCode: ' + e.code + ', errMsg: ' + e.message);
+    }
+  });
 }
 ```
 
@@ -421,88 +507,88 @@ function crlSample() {
 
 示例：创建证书链校验器对象，并对证书链数据进行校验（场景1）
 
-```javascript
-import cryptoCert from '@ohos.security.cert';
-
-// 一级证书数据，此处仅示例，业务需自行设置真实数据
-let caCertData = "-----BEGIN CERTIFICATE-----\n"
-+ "...\n"
-+ "...\n"
-+ "...\n"
-+ "-----END CERTIFICATE-----\n";
-
-// 二级证书数据，此处仅示例，业务需自行设置真实数据
-let secondCaCertData = "-----BEGIN CERTIFICATE-----\n"
-+ "...\n"
-+ "...\n"
-+ "...\n"
-+ "-----END CERTIFICATE-----\n";
-
-// string转Uint8Array
-function stringToUint8Array(str) {
-    var arr = [];
-    for (var i = 0, j = str.length; i < j; i++) {
-        arr.push(str.charCodeAt(i));
-    }
-    return new Uint8Array(arr);
+```ts
+import certFramework from '@ohos.security.cert';
+
+// CA certificate data, which is only an example. The CA certificate data varies with the service.
+let caCertData = '-----BEGIN CERTIFICATE-----\n' +
+  '...\n' +
+  '...\n' +
+  '...\n' +
+  '-----END CERTIFICATE-----\n';
+
+// End-entity certificate data, which is only an example. The certificate data varies with the service.
+let secondCaCertData = '-----BEGIN CERTIFICATE-----\n' +
+  '...\n' +
+  '...\n' +
+  '...\n' +
+  '-----END CERTIFICATE-----\n';
+
+// Convert the certificate data form a string to a Uint8Array..
+function stringToUint8Array(str: string): Uint8Array {
+  let arr: Array<number> = [];
+  for (let i = 0, j = str.length; i < j; i++) {
+    arr.push(str.charCodeAt(i));
+  }
+  return new Uint8Array(arr);
 }
 
-// 证书链校验器示例：此示例中以校验二级证书链为例，业务需根据场景自行修改
-function certChainValidatorSample() {
-    // 证书链校验器算法，当前仅支持PKIX
-    let algorithm = "PKIX";
-    
-    // 创建证书链校验器对象
-    let validator = cryptoCert.createCertChainValidator(algorithm);
-    
-    // 一级证书数据
-    let uint8ArrayOfCaCertData = stringToUint8Array(caCertData);
-    
-    // 一级证书数据长度
-    let uint8ArrayOfCaCertDataLen = new Uint8Array(new Uint16Array([uint8ArrayOfCaCertData.byteLength]).buffer);
-    
-    // 二级证书数据
-    let uint8ArrayOf2ndCaCertData = stringToUint8Array(secondCaCertData);
-    
-    // 二级证书数据长度
-    let uint8ArrayOf2ndCaCertDataLen = new Uint8Array(new Uint16Array([uint8ArrayOf2ndCaCertData.byteLength]).buffer);
-    
-    // 证书链二进制数据：二级证书数据长度+二级证书数据+一级证书数据长度+一级证书数据（L-V格式）
-    let encodingData = new Uint8Array(uint8ArrayOf2ndCaCertDataLen.length + uint8ArrayOf2ndCaCertData.length +
-                                     uint8ArrayOfCaCertDataLen.length + uint8ArrayOfCaCertData.length);
-    for (var i = 0; i < uint8ArrayOf2ndCaCertDataLen.length; i++) {
-        encodingData[i] = uint8ArrayOf2ndCaCertDataLen[i];
-    }
-    for (var i = 0; i < uint8ArrayOf2ndCaCertData.length; i++) {
-        encodingData[uint8ArrayOf2ndCaCertDataLen.length + i] = uint8ArrayOf2ndCaCertData[i];
-    }
-    for (var i = 0; i < uint8ArrayOfCaCertDataLen.length; i++) {
-        encodingData[uint8ArrayOf2ndCaCertDataLen.length + uint8ArrayOf2ndCaCertData.length + i] = uint8ArrayOfCaCertDataLen[i];
-    }
-    for (var i = 0; i < uint8ArrayOfCaCertData.length; i++) {
-        encodingData[uint8ArrayOf2ndCaCertDataLen.length + uint8ArrayOf2ndCaCertData.length +
-                     uint8ArrayOfCaCertDataLen.length + i] = uint8ArrayOfCaCertData[i];
+// Certificate chain validator example. In this example, a two-level certificate chain is verified.
+function certChainValidatorSample(): void {
+  // Certificate chain validator algorithm. Currently, only PKIX is supported.
+  let algorithm = 'PKIX';
+
+  // Create a CertChainValidator instance.
+  let validator = certFramework.createCertChainValidator(algorithm);
+
+  // CA certificate data.
+  let uint8ArrayOfCaCertData = stringToUint8Array(caCertData);
+
+  // Length of the CA certificate data.
+  let uint8ArrayOfCaCertDataLen = new Uint8Array(new Uint16Array([uint8ArrayOfCaCertData.byteLength]).buffer);
+
+  // End-entity certificate data.
+  let uint8ArrayOf2ndCaCertData = stringToUint8Array(secondCaCertData);
+
+  // Length of the end-entity certificate data.
+  let uint8ArrayOf2ndCaCertDataLen = new Uint8Array(new Uint16Array([uint8ArrayOf2ndCaCertData.byteLength]).buffer);
+
+  // Certificate chain binary data: end-entity certificate data length + end-entity certificate data + CA certificate data length + CA certificate data (in L-V format).
+  let encodingData = new Uint8Array(uint8ArrayOf2ndCaCertDataLen.length + uint8ArrayOf2ndCaCertData.length +
+  uint8ArrayOfCaCertDataLen.length + uint8ArrayOfCaCertData.length);
+  for (let i = 0; i < uint8ArrayOf2ndCaCertDataLen.length; i++) {
+    encodingData[i] = uint8ArrayOf2ndCaCertDataLen[i];
+  }
+  for (let i = 0; i < uint8ArrayOf2ndCaCertData.length; i++) {
+    encodingData[uint8ArrayOf2ndCaCertDataLen.length + i] = uint8ArrayOf2ndCaCertData[i];
+  }
+  for (let i = 0; i < uint8ArrayOfCaCertDataLen.length; i++) {
+    encodingData[uint8ArrayOf2ndCaCertDataLen.length + uint8ArrayOf2ndCaCertData.length + i] = uint8ArrayOfCaCertDataLen[i];
+  }
+  for (let i = 0; i < uint8ArrayOfCaCertData.length; i++) {
+    encodingData[uint8ArrayOf2ndCaCertDataLen.length + uint8ArrayOf2ndCaCertData.length +
+    uint8ArrayOfCaCertDataLen.length + i] = uint8ArrayOfCaCertData[i];
+  }
+
+  let certChainData: certFramework.CertChainData = {
+    // Uint8Array type: L-V format (certificate data length-certificate data)
+    data: encodingData,
+    // Number of certificates. It is 2 in this example.
+    count: 2,
+    // Certificate format. Only PEM and DER are supported. In this example, the certificate is in PEM format.
+    encodingFormat: certFramework.EncodingFormat.FORMAT_PEM
+  };
+
+  // Verify the certificate chain.
+  validator.validate(certChainData, (err, data) => {
+    if (err != null) {
+      // The operation fails.
+      console.error('validate failed, errCode: ' + err.code + ', errMsg: ' + err.message);
+    } else {
+      // The operation is successful.
+      console.log('validate success');
     }
-    
-    let certChainData = {
-        // Uint8Array类型：L-V格式(证书数据长度-证书数据)
-        data: encodingData,
-        // 证书数量，此示例中为2
-        count: 2,
-        // 证书格式：支持PEM和DER，此例中对应PEM
-        encodingFormat: cryptoCert.EncodingFormat.FORMAT_PEM
-    };
-    
-    // 校验证书链
-    validator.validate(certChainData, function (err, data) {
-        if (err != null) {
-            // 证书链校验失败
-            console.log("validate failed, errCode: " + err.code + ", errMsg: " + err.message);
-        } else {
-            // 证书链校验成功
-            console.log("validate success");
-        }
-	});
+  });
 }
 ```
 
@@ -534,43 +620,75 @@ function certChainValidatorSample() {
 
 示例：获取被吊销证书对象，并调用对象方法（包含场景1-3）
 
-```javascript
-import cryptoCert from '@ohos.security.cert';
+```ts
+import certFramework from '@ohos.security.cert';
+import { BusinessError } from '@ohos.base';
+
+let crlData = '-----BEGIN X509 CRL-----\n' +
+  'MIHzMF4CAQMwDQYJKoZIhvcNAQEEBQAwFTETMBEGA1UEAxMKQ1JMIGlzc3VlchcN\n' +
+  'MTcwODA3MTExOTU1WhcNMzIxMjE0MDA1MzIwWjAVMBMCAgPoFw0zMjEyMTQwMDUz\n' +
+  'MjBaMA0GCSqGSIb3DQEBBAUAA4GBACEPHhlaCTWA42ykeaOyR0SGQIHIOUR3gcDH\n' +
+  'J1LaNwiL+gDxI9rMQmlhsUGJmPIPdRs9uYyI+f854lsWYisD2PUEpn3DbEvzwYeQ\n' +
+  '5SqQoPDoM+YfZZa23hoTLsu52toXobP74sf/9K501p/+8hm4ROMLBoRT86GQKY6g\n' +
+  'eavsH0Q3\n' +
+  '-----END X509 CRL-----\n'
+
+// Convert the certificate data form a string to a Uint8Array.
+function stringToUint8Array(str: string): Uint8Array {
+  let arr: Array<number> = [];
+  for (let i = 0, j = str.length; i < j; i++) {
+    arr.push(str.charCodeAt(i));
+  }
+  return new Uint8Array(arr);
+}
 
-// 被吊销证书示例
-function crlEntrySample() {
-    // 业务需自行通过cryptoFramework的createX509Crl接口创建X509Crl对象，此处省略
-    let x509Crl = null;
-    
-    // 获取被吊销证书对象，业务需根据场景调用X509Crl的接口获取，此示例使用getRevokedCert获取
-    let serialNumber = 1000;
-    let crlEntry = null;
-    try {
-        crlEntry = x509Crl.getRevokedCert(serialNumber);
-    } catch (error) {
-        console.log("getRevokedCert failed, errCode: " + error.code + ", errMsg: " + error.message);
+// Example of a revoked certificate.
+function crlEntrySample(): void {
+  // Create an **X509Crl** instance by using createX509Crl() of certFramework.
+  let encodingBlob: certFramework.EncodingBlob = {
+    // Convert the CRL data from a string to a Uint8Array.
+    data: stringToUint8Array(crlData),
+    // CRL format. Only PEM and DER are supported. In this example, the CRL is in PEM format.
+    encodingFormat: certFramework.EncodingFormat.FORMAT_PEM
+  };
+
+  // Create an X509Crl instance.
+  certFramework.createX509Crl(encodingBlob, (err, x509Crl) => {
+    if (err != null) {
+      // Failed to create the X509Crl instance.
+      console.error('createX509Crl failed, errCode: ' + err.code + ', errMsg: ' + err.message);
+      return;
     }
+    console.log('create x509 crl success');
 
-    // 获取被吊销证书的序列号
-    serialNumber = crlEntry.getSerialNumber();
-    
-    // 获取被吊销证书的吊销日期
+    // Obtain a revoked certificate instance. In this example, the instance is obtained by using getRevokedCert().
     try {
-        crlEntry.getRevocationDate();
-    } catch (error) {
-        console.log("getRevocationDate failed, errCode: " + error.code + ", errMsg: " + error.message);
-    }
+      let serialNumber = 1000;
+      let crlEntry = x509Crl.getRevokedCert(serialNumber);
+
+      // Obtain the serial number of the revoked certificate.
+      serialNumber = crlEntry.getSerialNumber();
+      console.log('serialNumber is: ', serialNumber);
+
+      // Obtain the revocation date of the revoked certificate.
+      let date = crlEntry.getRevocationDate();
+      console.log('revocation date is: ', date);
 
-    // 获取被吊销证书对象的序列化数据
-    crlEntry.getEncoded(function (err, data) {
+      // Obtain the serialized data of the revoked certificate instance.
+      crlEntry.getEncoded((err, data) => {
         if (err != null) {
-            // 获取序列化数据失败
-            console.log("getEncoded failed, errCode: " + err.code + ", errMsg: " + err.message);
+          // Failed to obtain the serialized data of the certificate.
+          console.error('getEncoded failed, errCode: ' + err.code + ', errMsg: ' + err.message);
         } else {
-            // 获取序列化数据成功
-            console.log("getEncoded success");
+          // The serialized data of the certificate is successfully obtained.
+          console.log('getEncoded success');
         }
-    });
+      });
+    } catch (error) {
+      let e: BusinessError = error as BusinessError;
+      console.error('getRevokedCert failed, errCode: ' + e.code + ', errMsg: ' + e.message);
+    }
+  })
 }
 ```