@liuhlightning/wx-pay/dist/lib/decrypto.js

communicate to wx pay

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.decrypto = decrypto;
exports.decryptoByPrivateKey = decryptoByPrivateKey;
const crypto_1 = require("crypto");
function decrypto(nonce, ciphertext, associatedData) {
    const d = (0, crypto_1.createDecipheriv)("aes-256-gcm", this.apiv3Key, nonce);
    const buf = Buffer.from(ciphertext, "base64");
    const authTag = buf.subarray(-16);
    const data = buf.subarray(0, -16);
    d.setAuthTag(authTag);
    d.setAAD(Buffer.from(associatedData));
    const res = d.update(data, undefined, "utf8");
    d.final();
    return res;
}
function decryptoByPrivateKey(ciphertext) {
    const c = (0, crypto_1.privateDecrypt)({
        key: this.privateKey,
        padding: crypto_1.constants.RSA_PKCS1_OAEP_PADDING,
    }, Buffer.from(ciphertext, "base64"));
    return c.toString("utf-8");
}
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