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Replaced entropy driver context with void * to support multiple entropy drivers

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This commit is contained in:
Derek Miller 2019-02-15 17:17:25 -06:00
parent 6aaa4fd73b
commit 8a241a5779
1 changed files with 4 additions and 6 deletions
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10
include/psa/crypto_entropy_driver.h
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@ -40,10 +40,6 @@ extern "C" {
*/ */
/**@{*/ /**@{*/
/** \brief A hardware-specific structure for a entropy providing hardware
*/
typedef struct psa_drv_entropy_context_s psa_drv_entropy_context_t;
/** \brief Initialize an entropy driver /** \brief Initialize an entropy driver
* *
* *
@ -53,7 +49,7 @@ typedef struct psa_drv_entropy_context_s psa_drv_entropy_context_t;
* *
* \retval PSA_SUCCESS * \retval PSA_SUCCESS
*/ */
typedef psa_status_t (*psa_drv_entropy_init_t)(psa_drv_entropy_context_t *p_context); typedef psa_status_t (*psa_drv_entropy_init_t)(void *p_context);
/** \brief Get a specified number of bits from the entropy source /** \brief Get a specified number of bits from the entropy source
* *
@ -81,7 +77,7 @@ typedef psa_status_t (*psa_drv_entropy_init_t)(psa_drv_entropy_context_t *p_cont
* *
* \retval PSA_SUCCESS * \retval PSA_SUCCESS
*/ */
typedef psa_status_t (*psa_drv_entropy_get_bits_t)(psa_drv_entropy_context_t *p_context, typedef psa_status_t (*psa_drv_entropy_get_bits_t)(void *p_context,
uint8_t *p_buffer, uint8_t *p_buffer,
uint32_t buffer_size, uint32_t buffer_size,
uint32_t *p_received_entropy_bits); uint32_t *p_received_entropy_bits);
@ -96,6 +92,8 @@ typedef psa_status_t (*psa_drv_entropy_get_bits_t)(psa_drv_entropy_context_t *p_
* If one of the functions is not implemented, it should be set to NULL. * If one of the functions is not implemented, it should be set to NULL.
*/ */
typedef struct { typedef struct {
/** The driver-specific size of the entropy context */
const size_t context_size;
/** Function that performs initialization for the entropy source */ /** Function that performs initialization for the entropy source */
psa_drv_entropy_init_t *p_init; psa_drv_entropy_init_t *p_init;
/** Function that performs the get_bits operation for the entropy source /** Function that performs the get_bits operation for the entropy source