[4.x] ezwel 측 seed 구현 포팅

src/crypto-util/crypto-util.spec.ts

@@ -57,17 +57,19 @@ describe('decodeBase64', () => {
   });
 
   describe('ezwelSeed', () => {
+    const decrypted = '{"code": "hello world", "message": "안녕하세요"}';
+    const encrypted = 'LUPvDxmJToRCZcl56a7j+b1X1NV+6PMiBLm7SkLALDqyIfqCsHla0jkDuzoIn60GV5BA1t22DaHs1L32r4uw+A==';
+    const seedKey = 'string_x_sixteen';
+
     it('should return encrypted string', () => {
-      const data = '{"code": "hello world", "message": "안녕하세요"}';
-      const r1 = encodeSeedString(data, { seedKey: 'string_x_sixteen' });
-      expect(r1).toBe('LUPvDxmJToRCZcl56a7j+b1X1NV+6PMiBLm7SkLALDqyIfqCsHla0jkDuzoIn60G52VI68uIO51li9JAFsksAA==');
+      const r1 = encodeSeedString(decrypted, { seedKey });
+      expect(r1).toEqual(encrypted);
     });
 
     it('should return decrypted string', () => {
-      const data = 'LUPvDxmJToRCZcl56a7j+b1X1NV+6PMiBLm7SkLALDqyIfqCsHla0jkDuzoIn60G52VI68uIO51li9JAFsksAA==';
-      const r1 = decodeSeedString(data, { seedKey: 'string_x_sixteen' });
-      expect(r1.trim()).toBe('{"code": "hello world", "message": "안녕하세요"}');
-      expect(JSON.parse(r1)).toEqual({ code: 'hello world', message: '안녕하세요' });
+      const r1 = decodeSeedString(encrypted, { seedKey });
+      expect(r1).toEqual(decrypted);
+      expect(JSON.parse(r1)).toEqual(JSON.parse(decrypted));
     });
   });
 });

src/crypto-util/crypto-util.ts

@@ -1,7 +1,8 @@
-import { CryptoJS, buildHexString } from './ezwel-seed';
+import { EzwelCrypto } from './ezwel-seed';
 import type { webcrypto } from 'crypto';
 
 const crypto = (globalThis as any).crypto as typeof webcrypto;
+const ezwelCrypto = new EzwelCrypto();
 
 export const sha256 = async (data: string | Uint8Array): Promise<Uint8Array> => {
   if (typeof data === 'string') {
@@ -38,21 +39,10 @@ export const decodeBase64 = (data: string): Uint8Array => {
 };
 
 export const encodeSeedString = (data: string, { seedKey }: { seedKey: string }): string => {
-  const encoded = CryptoJS.enc.Utf8.parse(data);
-  const key = CryptoJS.enc.Hex.parse(buildHexString(seedKey));
-  const encrypted = CryptoJS.SEED.encrypt(encoded, key, {
-    mode: CryptoJS.mode.ECB,
-    padding: CryptoJS.pad.ZeroPadding,
-  });
-  return encrypted.toString();
+  return encodeBase64(ezwelCrypto.encrypt(data, seedKey));
 };
 
 export const decodeSeedString = (hash: string, { seedKey }: { seedKey: string }): string => {
-  const key = CryptoJS.enc.Hex.parse(buildHexString(seedKey));
-  const decrypted = CryptoJS.SEED.decrypt(hash, key, {
-    mode: CryptoJS.mode.ECB,
-    padding: CryptoJS.pad.ZeroPadding,
-  });
-  const decoded = CryptoJS.enc.Utf8.stringify(decrypted);
-  return decoded.replaceAll(/\x00/g, '');
+  const decrypted = ezwelCrypto.decrypt(decodeBase64(hash), seedKey);
+  return new TextDecoder().decode(decrypted);
 };