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Demonstrate algorithm agility

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Define HALH_ALG to the desired PSA algorithm
to demostrate the ease of swapping algorithms
with the PSA API.

Signed-off-by: Thomas Daubney <thomas.daubney@arm.com>
This commit is contained in:
Thomas Daubney 2023-07-24 16:49:14 +01:00
parent f7348ae1fc
commit 1db78fa32a
1 changed files with 5 additions and 3 deletions
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8
programs/psa/psa_hash.c
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@ -33,6 +33,8 @@
#include "mbedtls/build_info.h" #include "mbedtls/build_info.h"
#include "mbedtls/platform.h" #include "mbedtls/platform.h"
#define HASH_ALG PSA_ALG_SHA_256
#define TEST_SHA256_HASH { \ #define TEST_SHA256_HASH { \
0x5a, 0x09, 0xe8, 0xfa, 0x9c, 0x77, 0x80, 0x7b, 0x24, 0xe9, 0x9c, 0x9c, \ 0x5a, 0x09, 0xe8, 0xfa, 0x9c, 0x77, 0x80, 0x7b, 0x24, 0xe9, 0x9c, 0x9c, \
0xf9, 0x99, 0xde, 0xbf, 0xad, 0x84, 0x41, 0xe2, 0x69, 0xeb, 0x96, 0x0e, \ 0xf9, 0x99, 0xde, 0xbf, 0xad, 0x84, 0x41, 0xe2, 0x69, 0xeb, 0x96, 0x0e, \
@ -57,7 +59,7 @@ int main(void)
{ {
uint8_t buf[] = "Hello World!"; uint8_t buf[] = "Hello World!";
psa_status_t status; psa_status_t status;
uint8_t hash[PSA_HASH_LENGTH(PSA_ALG_SHA_256)]; uint8_t hash[PSA_HASH_LENGTH(HASH_ALG)];
size_t hash_size; size_t hash_size;
psa_hash_operation_t sha256_psa = PSA_HASH_OPERATION_INIT; psa_hash_operation_t sha256_psa = PSA_HASH_OPERATION_INIT;
psa_hash_operation_t cloned_sha256 = PSA_HASH_OPERATION_INIT; psa_hash_operation_t cloned_sha256 = PSA_HASH_OPERATION_INIT;
@ -73,7 +75,7 @@ int main(void)
/* Compute hash using multi-part operation */ /* Compute hash using multi-part operation */
status = psa_hash_setup(&sha256_psa, PSA_ALG_SHA_256); status = psa_hash_setup(&sha256_psa, HASH_ALG);
if (status != PSA_SUCCESS) { if (status != PSA_SUCCESS) {
mbedtls_printf("psa_hash_setup failed\n"); mbedtls_printf("psa_hash_setup failed\n");
return EXIT_FAILURE; return EXIT_FAILURE;
@ -110,7 +112,7 @@ int main(void)
memset(hash, 0, sizeof(hash)); memset(hash, 0, sizeof(hash));
hash_size = 0; hash_size = 0;
status = psa_hash_compute(PSA_ALG_SHA_256, status = psa_hash_compute(HASH_ALG,
buf, sizeof(buf), buf, sizeof(buf),
hash, sizeof(hash), hash, sizeof(hash),
&hash_size); &hash_size);