import * as CryptoJS from "crypto-js";
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/**
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* Base64 编码（按 UTF-8 处理）
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* 注意：btoa 只在浏览器(H5)存在，App 和小程序里没有，直接调用会报 btoa is not defined。
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* 这里在非 H5 环境用纯 JS 实现，不依赖任何平台 API。
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*/
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const B64_CHARS = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
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function base64Encode(str) {
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const text = String(str);
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// UTF-8 字节序列
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const utf8 = unescape(encodeURIComponent(text));
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let out = "";
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for (let i = 0; i < utf8.length; i += 3) {
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const c1 = utf8.charCodeAt(i);
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const c2 = utf8.charCodeAt(i + 1);
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const c3 = utf8.charCodeAt(i + 2);
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out += B64_CHARS[c1 >> 2];
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out += B64_CHARS[((c1 & 3) << 4) | (isNaN(c2) ? 0 : c2 >> 4)];
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out += isNaN(c2) ? "=" : B64_CHARS[((c2 & 15) << 2) | (isNaN(c3) ? 0 : c3 >> 6)];
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out += isNaN(c3) ? "=" : B64_CHARS[c3 & 63];
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}
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return out;
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}
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/**
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*加密处理
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*/
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export const encryption = params => {
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let { data, type, param, key } = params;
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const result = JSON.parse(JSON.stringify(data));
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if (type === "Base64") {
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param.forEach(ele => {
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result[ele] = base64Encode(result[ele]);
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});
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} else {
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param.forEach(ele => {
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var data = result[ele];
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key = CryptoJS.enc.Latin1.parse(key);
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var iv = key;
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// 加密
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var encrypted = CryptoJS.AES.encrypt(data, key, {
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iv: iv,
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mode: CryptoJS.mode.CBC,
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padding: CryptoJS.pad.ZeroPadding
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});
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result[ele] = encrypted.toString();
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});
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}
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return result;
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};
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