Manuel Pégourié-Gonnard 8aa29e382f Use existing implementation of cf_hmac()
Just move code from ssl_decrypt_buf() to the new cf_hmac() function and then
call cf_hmac() from there.

This makes the new cf_hmac() function used, opening the door for making it
static in the next commit. It also validates that its interface works for
using it in ssl_decrypt_buf().

Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
2020-07-15 12:26:21 +02:00
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