@payunit/nodejs-sdk
Version:
PayUnit Payment Processor SDK
111 lines • 4.99 kB
JavaScript
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});
var __importStar = (this && this.__importStar) || (function () {
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ownKeys = Object.getOwnPropertyNames || function (o) {
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var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
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step((generator = generator.apply(thisArg, _arguments || [])).next());
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Object.defineProperty(exports, "__esModule", { value: true });
exports.URL_PATTERN = exports.Utils = void 0;
const crypto = __importStar(require("crypto"));
class Utils {
constructor(encryptionKey, axiosInstance) {
this.encryptionKey = encryptionKey;
this.axiosInstance = axiosInstance;
}
// PCI DSS compliant card tokenization
tokenizeCard(cardDetails) {
return __awaiter(this, void 0, void 0, function* () {
try {
// Validate card data format
this.validateCardDetails(cardDetails);
// Tokenize card data
const encryptedCardData = this.encryptPayload(cardDetails);
const response = yield this.axiosInstance.post('/tokens/card', encryptedCardData);
// Decrypt response
const decryptedResponse = this.decryptResponse(response.data.encrypted, response.data.iv);
return decryptedResponse;
}
catch (error) {
if (error instanceof Error) {
throw new Error(`Failed to tokenize card: ${error.message}`);
}
throw new Error('Failed to tokenize card with unknown error');
}
});
}
// Validate card details according to PCI DSS requirements
validateCardDetails(cardDetails) {
if (!cardDetails.card_number ||
!cardDetails.expiry_month ||
!cardDetails.expiry_year ||
!cardDetails.cvv) {
throw new Error('Missing required card details');
}
// Basic validation
if (!/^[0-9]{13,19}$/.test(cardDetails.card_number)) {
throw new Error('Invalid card number format');
}
if (!/^[0-9]{2}$/.test(cardDetails.expiry_month) ||
!/^[0-9]{4}$/.test(cardDetails.expiry_year)) {
throw new Error('Invalid expiry date format');
}
if (!/^[0-9]{3,4}$/.test(cardDetails.cvv)) {
throw new Error('Invalid CVV format');
}
}
// Encrypt payload using AES-256
encryptPayload(payload) {
const iv = crypto.randomBytes(16);
const cipher = crypto.createCipheriv('aes-256-cbc', Buffer.from(this.encryptionKey), iv);
let encrypted = cipher.update(JSON.stringify(payload), 'utf8', 'hex');
encrypted += cipher.final('hex');
return { iv: iv.toString('hex'), encrypted };
}
// Decrypt response
decryptResponse(encryptedData, iv) {
const decipher = crypto.createDecipheriv('aes-256-cbc', Buffer.from(this.encryptionKey), Buffer.from(iv, 'hex'));
let decrypted = decipher.update(encryptedData, 'hex', 'utf8');
decrypted += decipher.final('utf8');
return JSON.parse(decrypted);
}
}
exports.Utils = Utils;
exports.URL_PATTERN = /^https:\/\/[\w.-]+(?:\.[\w-]+)+[\w-._~:/?#[\]@!$&'()*+,;=]*$/;
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