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psa: cipher: Re-organize multi-part operation context

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Move members that are of no use to the PSA crypto core
to the Mbed TLS implementation specific operation context.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
This commit is contained in:
Ronald Cron
2021-03-10 09:17:32 +01:00
parent 49fafa98b1
commit 937dfee92c
3 changed files with 49 additions and 42 deletions
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15
include/psa/crypto_struct.h
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@ -136,6 +136,14 @@ static inline struct psa_mac_operation_s psa_mac_operation_init( void )
return( v );
}
typedef struct {
/** Context structure for the Mbed TLS cipher implementation. */
psa_algorithm_t alg;
uint8_t iv_size;
uint8_t block_size;
mbedtls_cipher_context_t cipher;
} mbedtls_psa_cipher_operation_t;
struct psa_cipher_operation_s
{
/** Unique ID indicating which driver got assigned to do the
@ -146,20 +154,17 @@ struct psa_cipher_operation_s
* any driver (i.e. none of the driver contexts are active). */
unsigned int id;
psa_algorithm_t alg;
unsigned int iv_required : 1;
unsigned int iv_set : 1;
uint8_t iv_size;
uint8_t block_size;
union
{
unsigned dummy; /* Enable easier initializing of the union. */
mbedtls_cipher_context_t cipher;
mbedtls_psa_cipher_operation_t mbedtls_ctx;
psa_operation_driver_context_t driver;
} ctx;
};
#define PSA_CIPHER_OPERATION_INIT {0, 0, 0, 0, 0, 0, {0}}
#define PSA_CIPHER_OPERATION_INIT {0, 0, 0, {0}}
static inline struct psa_cipher_operation_s psa_cipher_operation_init( void )
{
const struct psa_cipher_operation_s v = PSA_CIPHER_OPERATION_INIT;