key read bugfix with shift, safety strlen, remove unused lib kuzn_128bit, because not needed anymore

red_crypto.mk

@@ -6,6 +6,5 @@ SRC += red_crypto/aes.c
 SRC += red_crypto/kuznechik_8bit.c
 SRC += red_crypto/kc_to_ascii.c
 
-# SRC += red_crypto/kuznechik_128bit.c # you can't include this, because you may not have ARMv8 and upper, check this
 # TODO: do something like this:
 # ifneq ($(findstring HAL_USE_CRY TRUE,$(HALCONF)),)