register update

constants/crypto.ts

@@ -0,0 +1,41 @@
+import CryptoJS from 'crypto-js';
+
+/**
+ * Backenddan kelgan shifrlangan tokenni ochish
+ */
+export const decryptToken = (encryptedBase64: string) => {
+    try {
+        // 1. Base64 dan WordArray ga
+        const encryptedData = CryptoJS.enc.Base64.parse(encryptedBase64);
+
+        // 2. IV (dastlabki 16 bayt)
+        const iv = CryptoJS.lib.WordArray.create(encryptedData.words.slice(0, 4));
+
+        // 3. Ciphertext (qolgan qism)
+        const ciphertext = CryptoJS.lib.WordArray.create(
+            encryptedData.words.slice(4),
+            encryptedData.sigBytes - 16
+        );
+
+        // 4. Maxfiy kalit
+        const key = CryptoJS.enc.Utf8.parse("12345678901234567890123456789012");
+
+        // 5. CipherParams yaratish
+        const cipherParams = CryptoJS.lib.CipherParams.create({
+            ciphertext,
+            key,
+            iv
+        });
+
+        // 6. Dekodlash
+        const decrypted = CryptoJS.AES.decrypt(cipherParams, key, {
+            iv,
+            mode: CryptoJS.mode.CBC,
+            padding: CryptoJS.pad.Pkcs7
+        });
+
+        return decrypted.toString(CryptoJS.enc.Utf8);
+    } catch (error) {
+        return null;
+    }
+};