In TLS1.3 can the client hello have the extensions which were not sent as part of HelloRetryRequest

I am having a Handshake session of PSK_only mode in TLS1.3 , where I use PSK’s established out of band.
consider, client Hello is sent with the extensions of supported_versions, PreSharedKey, psk_key_exchange_modes
Q1)If server sends a Hel… Continue reading In TLS1.3 can the client hello have the extensions which were not sent as part of HelloRetryRequest

How to generate an X9.62 encoded ECDSA prime256v1 private key using OpenSSL?

I created a private key using Analog device’s signtool. It can be found part of "CrossCore Embedded Studio for Blackfin, SHARC and SHARC+ – Release (Rev. 2.12.0)". Link: https://www.analog.com/en/resources/evaluation-hardware-and… Continue reading How to generate an X9.62 encoded ECDSA prime256v1 private key using OpenSSL?