diff options
Diffstat (limited to 'src/cc20rng/cc20_prng.h')
| -rw-r--r-- | src/cc20rng/cc20_prng.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/cc20rng/cc20_prng.h b/src/cc20rng/cc20_prng.h new file mode 100644 index 0000000..6940f53 --- /dev/null +++ b/src/cc20rng/cc20_prng.h @@ -0,0 +1,18 @@ +#ifndef __STM32_CHACHA20_H +#define __STM32_CHACHA20_H + +#include <stdint.h> + +#define CHACHA20_MAX_BLOCK_COUNTER 0xffffffff +#define CHACHA20_NUM_WORDS 16 +#define CHACHA20_BLOCK_SIZE (CHACHA20_NUM_WORDS * 4) + +struct cc20_state { + uint32_t i[CHACHA20_NUM_WORDS]; +}; + +extern void chacha20_prng_reseed(struct cc20_state *cc, uint32_t *entropy); +extern void chacha20_prng_block(struct cc20_state *cc, uint32_t block_counter, struct cc20_state *out); +extern int chacha20_prng_self_test(); + +#endif /* __STM32_CHACHA20_H */ |