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This is a fork of VTUN, with the following changes:

  • OpenSSL was replaced with libsodium. This requires libsodium >= 1.0.6.

  • Unauthenticated encryption schemes were replaced with hardware-accelerated AES256-GCM. COMMIT: 1fb08bb437 use CHACHA20POLY1305 in order to make it portable to NONE AES-NI.

  • The static, shared key was replaced by an ephemeral keys exchange with Curve25519. The PSK is now only used to sign ephemeral public keys and parameters.

  • Protection against replay attacks was added.

  • Passwords are not kept in memory, guarded memory allocations are used for secrets.