palmpaywrappersdk/dist/Utils/SignatureGeneration.js

PalmPay Wrapper Sdk

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.sign = void 0;
const md5_1 = __importDefault(require("md5"));
const jsrsasign_1 = require("jsrsasign");
// Define the HashMap type and values
const HashMap = {
    SHA256withRSA: 'SHA256withRSA',
    SHA1withRSA: 'SHA1withRSA',
};
const PEM_BEGIN = '-----BEGIN PRIVATE KEY-----\n';
const PEM_END = '\n-----END PRIVATE KEY-----';
const sign = (params, privateKey) => {
    let parseStr = Object.keys(params)
        .sort()
        .filter((item) => params[item])
        .map((item) => `${item}=${params[item]}`)
        .join('&');
    console.log('parseStr', parseStr);
    parseStr = (0, md5_1.default)(parseStr).toUpperCase();
    console.log('MD5', parseStr);
    const str = SignUtil.rsaSign(parseStr, privateKey, HashMap.SHA1withRSA);
    console.log('sign', str);
    return str;
};
exports.sign = sign;
const SignUtil = {
    rsaSign: function (content, privateKey, hash) {
        const _privateKey = this._formatKey(privateKey);
        console.log('parseStr', _privateKey);
        // Type assertion to handle the private key type issue
        const signature = new jsrsasign_1.KJUR.crypto.Signature({
            alg: hash,
            prvkeypem: _privateKey,
        }); // <-- Type assertion to bypass type checking
        signature.updateString(content);
        const signData = signature.sign();
        return (0, jsrsasign_1.hextob64)(signData);
    },
    _formatKey: function (key) {
        if (!key.startsWith(PEM_BEGIN)) {
            key = PEM_BEGIN + key;
        }
        if (!key.endsWith(PEM_END)) {
            key = key + PEM_END;
        }
        return key;
    },
};
exports.default = SignUtil;