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non-repudiation

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Umer-Farooq-CS / SecureChat

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A secure console-based chat system implementing PKI, RSA, Diffie-Hellman, AES-128, and SHA-256 to achieve CIANR (Confidentiality, Integrity, Authenticity, Non-Repudiation). Features self-built CA, X.509 certificate validation, encrypted messaging, and session transcripts for non-repudiation.

python cryptography encryption authentication rsa pki aes-128 sha-256 diffie-hellman secure-chat non-repudiation x509-certificates ciandr
  • Updated Nov 16, 2025
  • Python

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