On 20/04/2020 12:59, brandon.murphy1996 via openssl-users wrote: > From what I noticed, the handshake completes successfully, regardless > of the value of "psk_key" (as long as PSK length is even). However, > if the identity value is mismatched between psk_find_session_cb and > use_session_cb, the handshake fails with the message: It's not clear from your question what you expected to happen. The length of the PSK key doesn't actually matter from a TLS perspective (obviously in practice it is best if the length is consistent with the ciphersuite key length). Or did you mean that that the value doesn't matter - even if it is mismatched with the client's value? That would be unexpected (and probably indicates you are not actually using the PSK at all and doing a full handshake). Matt
