[openssl-users] Help to understand WPACKET API
ananthaneni.saitejachowdary at citrix.com
Wed Dec 20 05:41:25 UTC 2017
I am trying to tweak openssl-master client to test a tls1.3 enabled server.
I want to club the client certificate, client key exchange , change cipher spec and certificate verify into single handshake message.( So that the record shows up as multiple handshake messages).
OpenSSL Version : OpenSSL 1.1.1-dev xx XXX xxxx.
After going through the code I understand the new tls1.3 implemented OpenSSL code is using WPACKET API to frame the records. I need help in understanding what the following functions do. I am new to the mailing list, thanks in advance.
Basically what does the word _sub_ mean in these functions and how do that differ from the non sub function say
Difference between WPACKET_sub_memcpy__ and WPACKET_memcpy__
Please feel free to reply if something is not understandable.
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