🔒 隐私声明
版本：1.0 | 生效日期：2026年7月11日
CalculSite计算站网站（以下简称“本平台”）由个人开发者运营，致力于为全球工程技术研究人员提供共享、开放的模拟计算工具。
本平台高度重视隐私。以下声明如实说明我们对信息的处理方式。
1. 我们处理哪些信息？
我们处理的信息极少，仅限于维持服务所必需。
登录凭证
您使用的用户名和密码由平台提前生成并分配。我们存储：
- 用户名：明文存储，用于标识登录身份。
- 密码：仅存储不可逆的加密哈希值（使用 BCrypt 算法），原始密码无法被还原。
我们不记录任何与凭证关联的身份信息，也不知道您是谁或代表哪个机构。
使用数据
我们不记录您的 IP 地址、设备信息、浏览器类型、访问时间、操作日志或任何其他使用数据。服务器层面的访问日志已关闭。
计算结果
您输入的所有数据及生成的计算结果，均只在服务器内存中临时处理，返回结果后立刻销毁，绝不落盘存储。
Cookie 及会话管理
为了维持您的登录状态，本平台在您的浏览器中存储一个会话 Cookie，名称为 CalculSite.Auth。
- 用途：此 Cookie 仅用于验证您的登录状态，使我们能够区分已登录和未登录的请求。它不包含您的姓名、邮箱或其他个人身份信息。
- 有效期：该 Cookie 在您登录时创建，有效期为登录时刻起 120 分钟，到期后自动失效。您也可以随时通过浏览器自带的“清除浏览数据”功能手动删除此 Cookie。
- 安全属性：此 Cookie 被设置为
HttpOnly（禁止网页脚本读取，防止凭证泄露）和SameSite=Lax（防止跨站伪造请求），以降低安全风险。 - 不用于跟踪：我们不使用此 Cookie 或任何其他技术来追踪您的浏览行为、进行用户画像或投放广告。
注：为保护表单提交安全，平台还会设置一个临时防伪 Cookie（Antiforgery），该 Cookie 不包含任何个人数据，请求结束后即失效。
数据存储位置
登录凭证的加密哈希值存储于中国大陆境内的服务器上。我们不将任何数据转移至境外。
2. 我们如何使用这些信息？
- 登录凭证：仅用于验证您的登录状态，无任何其他目的。
- 无其他用途：因我们不收集其他信息，故不存在额外的使用方式。
3. 我们是否共享信息？
不共享。我们不向任何第三方提供任何信息，因为我们根本不存储可用于共享的个人数据。
4. 您的权利
您有权：
- 停止使用：您可随时停止使用本平台，无需任何操作。
- 联系我们：如有疑问，可通过以下邮箱与我们联系。
- 关于数据操作：由于我们不记录您的任何个人身份信息，因此无法提供数据访问、更正、删除或携带请求（我们没有可操作的数据）。如需更换登录凭证，请直接联系我们。
5. 数据安全与凭证提示
我们采用合理的技术措施保护凭证安全：
- 密码使用 BCrypt 哈希算法加密存储，无法被还原。
- 所有通信均通过 HTTPS 加密。
- Cookie 配置为 HttpOnly 和 SameSite=Lax，防止常见 Web 攻击。
重要提醒：本平台允许用户之间自发分发登录凭证。我们无法追踪凭证的流转路径，也无法区分使用同一条凭证的不同个人。
您应自行承担凭证保管责任。为保护您的安全，请勿在用户名或密码中使用任何真实身份信息，并妥善保管您的凭证。如怀疑凭证已泄露，请立即通过以下邮箱联系我们，我们将为您生成新的凭证。
6. 联系方式
- 邮箱：4582766@qq.com
- 回复时效：我们通常在 2 个工作日内回复您的来信。
7. 声明更新
本声明可能随运营需要更新。更新版本将在此页面发布，并同步更新生效日期。
🔒 Privacy Notice
Version: 1.0 | Effective Date: July 11, 2026
CalculSite is a personal project dedicated to providing shared and open simulation tools for engineering researchers worldwide.
This notice transparently explains how we handle information.
1. What Information Do We Process?
We process only the absolute minimum necessary to provide the service.
Login Credentials
The username and password you use are pre-generated and assigned by the platform. We store:
- Username: Stored in plain text to identify your login identity.
- Password: Stored only as an irreversible cryptographic hash (using BCrypt). The original password cannot be recovered.
We do not record any identity information associated with these credentials, and we do not know who you are or which organization you represent.
Usage Data
We do not log your IP address, device information, browser type, access times, or any other usage data. Server-level access logging has been disabled.
Calculation Results
All data you input and results you obtain are processed solely in server memory and discarded immediately after the response is sent. Nothing is written to disk.
Cookies & Session Management
To maintain your login session, this platform stores a session cookie in your browser, named CalculSite.Auth.
- Purpose: This cookie is used solely to verify your login status and distinguish logged-in requests from anonymous ones. It does not contain your name, email address, or any other personally identifiable information.
- Expiration: The cookie is created upon login and expires automatically 120 minutes after the login time. You may also delete it manually at any time using your browser’s “Clear browsing data” feature.
- Security Attributes: The cookie is set with
HttpOnly(preventing JavaScript access and credential theft) andSameSite=Lax(mitigating cross-site request forgery attacks) to enhance security. - No Tracking: We do not use this cookie or any other technology to track your browsing behavior, build user profiles, or serve advertisements.
Note: To protect form submissions, a temporary antiforgery cookie is also set. It contains no personal data and expires after the request.
Data Storage Location
Encrypted login credentials are stored on servers located within mainland China. We do not transfer any data outside this region.
2. How Do We Use This Information?
- Login Credentials: Used only to verify your login status. No other purpose.
- No Other Uses: As we collect no other information, there are no additional use cases.
3. Do We Share Information?
No. We do not share any information with any third party, because we do not store any personal data that could be shared.
4. Your Rights
You have the right to:
- Stop Using: You may stop using the platform at any time with no action required.
- Contact Us: For questions, reach out via the email below.
- About Data Operations: Since we do not record any personally identifiable information about you, we are unable to process requests for data access, rectification, erasure, or portability (we simply have no data to operate on). If you need a replacement login credential, please contact us directly.
5. Data Security & Credential Notice
We take reasonable measures to protect your credentials:
- Passwords are stored using BCrypt hashing and are irreversible.
- All communications are encrypted via HTTPS.
- Cookies are configured with HttpOnly and SameSite=Lax to mitigate common web attacks.
Important Notice: This platform allows users to freely share credentials with others. We are unable to track how they circulate or distinguish between individuals using the same credential.
You are solely responsible for the safekeeping of your credentials. For your own security, do not use any real identity information in your username or password. If you suspect your credentials have been compromised, please contact us immediately via the email below, and we will issue new credentials for you.
6. Contact
- Email: 4582766@qq.com
- Response Time: We typically reply within 2 business days.
7. Updates
This notice may be updated as needed. The latest version will always be posted here with an updated effective date.