Original Summary

Sealr is an end-to-end encrypted messenger built on React Native and Firebase. It gives senders absolute post-send control by attaching cryptographic rules (views, expiry, geo-fencing) to each message. We use AES-256-GCM and RSA-OAEP-2048, enforcing permissions via Firestore rules without the server ever reading the content and without any plain-text and media ever being stored on the local device. Screen capture and mirroring is blocked at the OS level.

  • 情报分类：商业与市场研究
  • 分类依据：内容涉及商业、投资或市场动态
  • 信息来源：Hacker News 新项目
  • 发布时间：2026/9/21 16:28:47