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change hmac context to use statically allocated memory

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1. removed dynamic allocation of stack context
2. moved ipad to stack
3. added defines for maximal sizes
This commit is contained in:
Nir Sonnenschein
2018-06-07 16:20:17 +03:00
committed by itayzafrir
parent 0c9ec53a10
commit 35dfbf4601
2 changed files with 15 additions and 17 deletions
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11
include/psa/crypto_struct.h
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@@ -45,6 +45,14 @@
#include "mbedtls/sha256.h"
#include "mbedtls/sha512.h"
#if defined(MBEDTLS_SHA512_C)
#define PSA_CRYPTO_MD_MAX_SIZE 64
#define PSA_CRYPTO_MD_BLOCK_SIZE 128
#else
#define PSA_CRYPTO_MD_MAX_SIZE 32
#define PSA_CRYPTO_MD_BLOCK_SIZE 64
#endif
struct psa_hash_operation_s
{
psa_algorithm_t alg;
@@ -77,11 +85,10 @@ struct psa_hash_operation_s
typedef struct {
unsigned int block_size;
/** The hash context. */
struct psa_hash_operation_s hash_ctx;
/** The HMAC part of the context. */
void *hmac_ctx;
char hmac_ctx[PSA_CRYPTO_MD_BLOCK_SIZE];
} psa_hmac_internal_data;