diff options
| -rw-r--r-- | board/cr50/dcrypto/dcrypto_bn.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/board/cr50/dcrypto/dcrypto_bn.c b/board/cr50/dcrypto/dcrypto_bn.c index 5e60e2aea3..6d18a1c520 100644 --- a/board/cr50/dcrypto/dcrypto_bn.c +++ b/board/cr50/dcrypto/dcrypto_bn.c @@ -1131,20 +1131,27 @@ struct DMEM_ctx { struct DMEM_ctx_ptrs sqr_ptrs; struct DMEM_ctx_ptrs mul_ptrs; struct DMEM_ctx_ptrs out_ptrs; - uint32_t mod[RSA_WORDS_4K]; + uint32_t in[RSA_WORDS_4K]; uint32_t dInv[8]; uint32_t pubexp; uint32_t _pad1[3]; uint32_t rnd[2]; uint32_t _pad2[2]; + uint32_t mod[RSA_WORDS_4K]; uint32_t RR[RSA_WORDS_4K]; - uint32_t in[RSA_WORDS_4K]; uint32_t exp[RSA_WORDS_4K + 8]; /* extra word for randomization */ uint32_t out[RSA_WORDS_4K]; uint32_t bin[RSA_WORDS_4K]; uint32_t bout[RSA_WORDS_4K]; }; +BUILD_ASSERT(sizeof(struct DMEM_ctx) <= 4096); +/* Check for 256-bit alignment. */ +BUILD_ASSERT((offsetof(struct DMEM_ctx, in) & 31) == 0); +BUILD_ASSERT((offsetof(struct DMEM_ctx, mod) & 31) == 0); +BUILD_ASSERT((offsetof(struct DMEM_ctx, dInv) & 31) == 0); +BUILD_ASSERT((offsetof(struct DMEM_ctx, RR) & 31) == 0); + #define DMEM_CELL_SIZE 32 #define DMEM_INDEX(p, f) \ (((const uint8_t *)&(p)->f - (const uint8_t *)(p)) / DMEM_CELL_SIZE) |