Toolkit._3DES_encode(emailKEY, token.getBytes());这句话何解？

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qq_ebd02e3e 1楼•2298天前

@At("/active/mail")
    @POST
    public Object activeMail(@Attr(scope=Scope.SESSION, value="me")int userId,
            HttpServletRequest req) {
        NutMap re = new NutMap();
        UserProfile profile = get(userId);
        if (Strings.isBlank(profile.getEmail())) {
            return re.setv("ok", false).setv("msg", "你还没有填邮箱啊!");
        }
        String token = String.format("%s,%s,%s", userId, profile.getEmail(), System.currentTimeMillis());
        token = Toolkit._3DES_encode(emailKEY, token.getBytes());
        String url = req.getRequestURL() + "?token=" + token;
        String html = "<div>如果无法点击,请拷贝一下链接到浏览器中打开<p/>验证链接 %s</div>";
        html = String.format(html, url, url);
        try {
            boolean ok = emailService.send(profile.getEmail(), "XXX 验证邮件 by Nutzbook", html);
            if (!ok) {
                return re.setv("ok", false).setv("msg", "发送失败");
            }
        } catch (Throwable e) {
            log.debug("发送邮件失败", e);
            return re.setv("ok", false).setv("msg", "发送失败");
        }
        return re.setv("ok", true);
    }