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block_cipher: add PSA dispatch if possible

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"if possible" means:
- PSA has been initialized
- requested key type is available in PSA

Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
This commit is contained in:
Valerio Setti 2023-12-12 11:19:17 +01:00
parent 1f67363d6a
commit c1db99d3f5
2 changed files with 112 additions and 0 deletions
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20
include/mbedtls/block_cipher.h
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@ -24,6 +24,10 @@
#include "mbedtls/camellia.h"
#endif
#if defined(MBEDTLS_BLOCK_CIPHER_SOME_PSA)
#include "psa/crypto.h"
#endif
#ifdef __cplusplus
extern "C" {
#endif
@ -35,8 +39,24 @@ typedef enum {
MBEDTLS_BLOCK_CIPHER_ID_ARIA, /**< The Aria cipher. */
} mbedtls_block_cipher_id_t;
/**
* Used internally to indicate whether a context uses legacy or PSA.
*
* Internal use only.
*/
typedef enum {
MBEDTLS_BLOCK_CIPHER_ENGINE_LEGACY = 0,
MBEDTLS_BLOCK_CIPHER_ENGINE_PSA,
} mbedtls_block_cipher_engine_t;
typedef struct {
mbedtls_block_cipher_id_t MBEDTLS_PRIVATE(id);
#if defined(MBEDTLS_BLOCK_CIPHER_SOME_PSA)
mbedtls_block_cipher_engine_t engine;
psa_cipher_operation_t psa_operation;
psa_key_type_t psa_key_type;
mbedtls_svc_key_id_t psa_key_id;
#endif
union {
unsigned dummy; /* Make the union non-empty even with no supported algorithms. */
#if defined(MBEDTLS_AES_C)