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authorLinus Nordberg <linus@nordberg.se>2019-12-18 23:36:25 +0100
committerLinus Nordberg <linus@nordberg.se>2020-01-21 16:07:56 +0100
commit76a6b631f4bd6866622f537870bc145c935bef40 (patch)
treee5120a2cbfb18deeca95c6670dfd3216745d4d8c /src/cc20rng/stm32f4xx_it.h
parent41eb060367b91415aadea26f63efc3db8fdbc92b (diff)
[cc20rng] Revamping the ChaCha20 seeding
- chacha20_prng_block() uses counter in the state struct - chacha20_setup() replaces chacha20_prng_reseed() and fills the whole state struct, fixing a bug where only half of the key was being set; as a result of 'counter' being set, a state struct filled with entropy from the TRNG makes reseeding occur after a random number of rounds instead of after a fixed 2^32-1 rounds - decrementing of the block counter is done in chacha20_prng_block() - chacha output is copied to buf _after_ the interrupt driven transmission of buf to UART has finished, to stop the race between reading and refilling of buf
Diffstat (limited to 'src/cc20rng/stm32f4xx_it.h')
-rw-r--r--src/cc20rng/stm32f4xx_it.h2
1 files changed, 0 insertions, 2 deletions
diff --git a/src/cc20rng/stm32f4xx_it.h b/src/cc20rng/stm32f4xx_it.h
index 04c5a36..6edba3c 100644
--- a/src/cc20rng/stm32f4xx_it.h
+++ b/src/cc20rng/stm32f4xx_it.h
@@ -44,8 +44,6 @@
#endif
/* Includes ------------------------------------------------------------------*/
-#include "main.h"
-
/* Exported types ------------------------------------------------------------*/
/* Exported constants --------------------------------------------------------*/
/* Exported macro ------------------------------------------------------------*/