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zero-knowledge-encryption

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A self-hosted, federated, zero-knowledge encrypted mail system in a single PHP file. AES-256-GCM encryption, PBKDF2 key derivation, and encrypted attachments ensure the server never sees your message password. No SMTP. No external dependencies. Just drop xmail.php and go.

  • Updated Mar 7, 2026
  • PHP

FlowBridge is a C-based TCP file transfer system enabling reliable transmission between devices via local networks or ZeroTier. Features sender/receiver architecture, 64KB chunked transfers, real-time progress tracking, and file integrity verification. Demonstrates socket programming, TCP protocol, and network fundamentals.

  • Updated Apr 17, 2026
  • C

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