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Key exchange is slow/gets timeouts #17

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cy384 opened this issue Aug 7, 2022 · 1 comment

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bug

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cy384 commented Aug 7, 2022

Key exchange is slow. This is arguably more of a bug in mbedtls but I want to track it here for my purposes. Notes:

diffie-hellman-group1-sha1 key exchange method is too slow to run on (some? all?) 68k machines
implementations in bignum.c in mbedtls, revisit mbedtls_mpi_exp_mod specifically
figure how to detect when the remote host drops us due to timeout and tell the user
figure out and document the minimum specs for the various methods
is there some keepalive flag or message, either OT/TCP or in ssh/libssh2 that we can be using to prevent timeouts?

cy384 added the bug label

reukiodo commented May 12, 2023

Is there debug output to see what cipher/key exchange the client is using to connect?

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