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Implement hash functions

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New header file crypto_struct.h. The main file crypto.sh declares
structures which are implementation-defined. These structures must be
defined in crypto_struct.h, which is included at the end so that the
structures can use types defined in crypto.h.

Implement psa_hash_start, psa_hash_update and psa_hash_final. This
should work for all hash algorithms supported by Mbed TLS, but has
only been smoke-tested for SHA-256, and only in the nominal case.
This commit is contained in:
Gilles Peskine
2018-02-07 21:05:37 +01:00
committed by itayzafrir
parent a590529938
commit 9ef733faa0
5 changed files with 508 additions and 0 deletions
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54
include/psa/crypto.h
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@ -307,6 +307,54 @@ psa_status_t psa_export_key(psa_key_slot_t key,
/**@}*/
/** \defgroup hash Message digests
* @{
*/
typedef struct psa_hash_operation_s psa_hash_operation_t;
#define PSA_HASH_FINAL_SIZE(alg) \
( \
(alg) == PSA_ALG_MD2 ? 16 : \
(alg) == PSA_ALG_MD4 ? 16 : \
(alg) == PSA_ALG_MD5 ? 16 : \
(alg) == PSA_ALG_SHA_256_128 ? 16 : \
(alg) == PSA_ALG_RIPEMD160 ? 20 : \
(alg) == PSA_ALG_SHA_1 ? 20 : \
(alg) == PSA_ALG_SHA_256_160 ? 20 : \
(alg) == PSA_ALG_SHA_224 ? 28 : \
(alg) == PSA_ALG_SHA_256 ? 32 : \
(alg) == PSA_ALG_SHA_384 ? 48 : \
(alg) == PSA_ALG_SHA_512 ? 64 : \
(alg) == PSA_ALG_SHA_512_224 ? 28 : \
(alg) == PSA_ALG_SHA_512_256 ? 32 : \
(alg) == PSA_ALG_SHA3_224 ? 28 : \
(alg) == PSA_ALG_SHA3_256 ? 32 : \
(alg) == PSA_ALG_SHA3_384 ? 48 : \
(alg) == PSA_ALG_SHA3_512 ? 64 : \
0)
psa_status_t psa_hash_start(psa_hash_operation_t *operation,
psa_algorithm_t alg);
psa_status_t psa_hash_update(psa_hash_operation_t *operation,
const uint8_t *input,
size_t input_length);
psa_status_t psa_hash_finish(psa_hash_operation_t *operation,
uint8_t *hash,
size_t hash_size,
size_t *hash_length);
psa_status_t psa_hash_verify(psa_hash_operation_t *operation,
const uint8_t *hash,
size_t hash_length);
psa_status_t ps_hash_abort(psa_hash_operation_t *operation);
/**@}*/
/** \defgroup MAC Message authentication codes
/** \defgroup asymmetric Asymmetric cryptography
* @{
*/
@ -379,6 +427,12 @@ psa_status_t psa_asymmetric_verify(psa_key_slot_t key,
}
#endif
/* The file "crypto_struct.h" contains definitions for
* implementation-specific structs that are declared above. */
#include "crypto_struct.h"
/* The file "crypto_extra.h" contains vendor-specific definitions. This
* can include vendor-defined algorithms, extra functions, etc. */
#include "crypto_extra.h"
#endif /* PSA_CRYPTO_H */