ostp/ostp-core
ospab 8fe0589ea6 fix: handshake padding wire format (breaking fix)
The previous commit added random padding after Noise handshake payloads
but the receiver passed the entire raw buffer (including padding) to
snow::read_handshake(), which cannot handle trailing bytes.

New wire format:
  [session_id:4][noise_len:2][noise_payload:N][random_padding:32-128]

Changes:
- wrap_datagram_handshake: puts noise_len (u16 BE) at bytes [4..6]
  before the Noise payload, followed by 32-128 random padding bytes
- handle_inbound: reads noise_len from [4..6], passes only
  raw_vec[6..6+noise_len] to snow, ignoring trailing padding
- obfuscation: handshake mask extended from 4 to 6 bytes to also
  cover the noise_len field (prevents DPI from seeing constant u16)
- dispatcher: key-trial loop updated to deobfuscate 6-byte header

Both client and server now produce/consume the same padded format.
2026-05-17 15:16:02 +03:00
..
src fix: handshake padding wire format (breaking fix) 2026-05-17 15:16:02 +03:00
Cargo.toml security: fix obfuscation via HMAC per-packet mask and cap server sessions at 1024 2026-05-15 18:24:35 +03:00