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mbedtls hardware bignum: Expose ESP-only bignum API in wrapper mbedtls/bignum.h

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Angus Gratton
2016-11-18 16:38:22 +11:00
parent 36f29017b6
commit 1cc0b3000b
6 changed files with 121 additions and 28 deletions
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14
components/mbedtls/port/esp_bignum.c
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@@ -26,7 +26,6 @@
#include <limits.h>
#include <assert.h>
#include "mbedtls/bignum.h"
#include "mbedtls/bn_mul.h"
#include "rom/bigint.h"
#include "soc/hwcrypto_reg.h"
#include "esp_system.h"
@@ -38,9 +37,7 @@
#include "freertos/task.h"
#include "freertos/semphr.h"
#if defined(MBEDTLS_MPI_MUL_MPI_ALT) || defined(MBEDTLS_MPI_EXP_MOD_ALT)
static const char *TAG = "bignum";
static const __attribute__((unused)) char *TAG = "bignum";
#if defined(CONFIG_MBEDTLS_MPI_USE_INTERRUPT)
static SemaphoreHandle_t op_complete_sem;
@@ -70,10 +67,7 @@ static void rsa_isr_initialise()
static _lock_t mpi_lock;
/* At the moment these hardware locking functions aren't exposed publically
for MPI. If you want to use the ROM bigint functions and co-exist with mbedTLS, please raise a feature request.
*/
static void esp_mpi_acquire_hardware( void )
void esp_mpi_acquire_hardware( void )
{
/* newlib locks lazy initialize on ESP-IDF */
_lock_acquire(&mpi_lock);
@@ -83,7 +77,7 @@ static void esp_mpi_acquire_hardware( void )
#endif
}
static void esp_mpi_release_hardware( void )
void esp_mpi_release_hardware( void )
{
ets_bigint_disable();
_lock_release(&mpi_lock);
@@ -546,5 +540,3 @@ static int mpi_mult_mpi_failover_mod_mult(mbedtls_mpi *Z, const mbedtls_mpi *X,
#endif /* MBEDTLS_MPI_MUL_MPI_ALT */
#endif /* MBEDTLS_MPI_MUL_MPI_ALT || MBEDTLS_MPI_EXP_MOD_ALT */