Have the server sign PROTOCOL_SUPPORT/PROTOCOL_VERSION #731
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This closes #6, ensuring no future MiTM-based downgrade attacks can occur. Note that obviously this doesn't do anything for TOFU clients as any MiTM attacker can also replace the pubkey, but it does protect either connection-reset-based MiTM attackers as the pubkey must not change and also any clients which specify the expected public key.
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Oops wrong head, sorry. |
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