[대상향] SAP erp 웹링크용 암호화 모듈 작성.

projects/ucap-webmessenger-app/src/app/layouts/native/components/top-bar.component.ts

@@ -49,7 +49,8 @@ import { environment } from '../../../../environments/environment';
 import {
   DaesangApiService,
   DaesangProtocolService,
-  WebLinkType
+  WebLinkType,
+  DaesangCipherService
 } from '@ucap-webmessenger/daesang';
 import { NGXLogger } from 'ngx-logger';
 import {
@@ -133,6 +134,7 @@ export class TopBarComponent implements OnInit, OnDestroy {
     @Inject(UCAP_NATIVE_SERVICE) private nativeService: NativeService,
     private changeDetectorRef: ChangeDetectorRef,
     private dialogService: DialogService,
+    private daesangCipherService: DaesangCipherService,
     private localStorageService: LocalStorageService,
     private sessionStorageService: SessionStorageService,
     private publicApiService: PublicApiService,

projects/ucap-webmessenger-daesang/src/lib/services/daesang-cipher.service.ts

@@ -1,6 +1,7 @@
 import { Injectable } from '@angular/core';
 import CryptoJS from 'crypto-js';
 import crypto from 'crypto';
+import moment from 'moment';
 
 import { CipherUtil } from '../utils/CipherUtil';
 
@@ -40,4 +41,53 @@ export class DaesangCipherService {
       .toString()
       .toUpperCase();
   }
+
+  /**
+   * Sap of Weblink
+   * @description
+   * const enc = this.daesangCipherService.encryptForSapErp('aes256-daesang-key!!',12345678);
+   * console.log('enc', enc);
+   * const dec = this.daesangCipherService.decryptForSapErp('aes256-daesang-key!!',enc);
+   * console.log('dec', dec);
+   */
+  encryptForSapErp(pvUserKey: string, employeeNum: number): string {
+    // const txt = '20200221090321_asdfghjk'; // 1QgLAiLqJ6Uo6bE4Qk1o3Yd6mfqxXSnmqXX%2FXLL7DoA%3D
+    // const txt = '20200221101444_asdfghjk'; // Lz1TIdGTQQMui%2BBHMdj8fatYYhXbwJEL%2BJ91C7jUWEs%3D
+    const str = moment().format('YYYYMMDDHHmmss') + '_' + employeeNum;
+    const secretKeyToByteArray: Buffer = Buffer.from(pvUserKey, 'utf8').slice(
+      0,
+      16
+    );
+    const ivParamenter: Buffer = Buffer.from(pvUserKey.slice(0, 16));
+    const cipher: crypto.Cipher = crypto.createCipheriv(
+      'aes-128-cbc',
+      secretKeyToByteArray,
+      ivParamenter
+    );
+    let encryptedValue: string = cipher.update(str, 'utf8', 'base64');
+    encryptedValue += cipher.final('base64');
+
+    return encodeURIComponent(encryptedValue);
+  }
+
+  decryptForSapErp(pvUserKey: string, encryptedValue: string): string {
+    const secretKeyToByteArray: Buffer = Buffer.from(pvUserKey, 'utf8').slice(
+      0,
+      16
+    );
+    const ivParamenter: Buffer = Buffer.from(pvUserKey.slice(0, 16));
+    const cipher: crypto.Decipher = crypto.createDecipheriv(
+      'aes-128-cbc',
+      secretKeyToByteArray,
+      ivParamenter
+    );
+    let decryptedValue: string = cipher.update(
+      decodeURIComponent(encryptedValue),
+      'base64',
+      'utf8'
+    );
+    decryptedValue += cipher.final('utf8');
+
+    return decryptedValue;
+  }
 }