AES / HMAC Box

在浏览器用 Web Crypto 做 AES-GCM 加解密与 HMAC-SHA256。口令经 PBKDF2 派生,数据不上传,适合本地小密文处理。

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How to use

  1. 选择 AES-GCM 加密/解密或 HMAC。
  2. 加密使用 PBKDF2(10 万次)从口令派生密钥,输出含 salt/iv 的 JSON。
  3. 口令与明文仅在内存中处理,不上传。
  4. 丢失口令无法恢复密文。

FAQ

Does AES / HMAC Box upload my data?

No. AES / HMAC Box runs locally in your browser and does not upload content to www.518882.com or third-party APIs.

Do I need an account?

No. Open and use — no signup, login, or paywall. Open AES / HMAC Box and use it — no signup, login, or paywall.

How is this different from upload-based tools?

Tools run locally in your browser; content is not sent to our servers for processing — suited to private text and drafts.

Are there limits?

Limited by device memory and the browser; very large inputs may slow the page. There is no account quota.