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Add psa_crypto_input_copy_alloc() implementation

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Signed-off-by: David Horstmann <david.horstmann@arm.com>
This commit is contained in:
David Horstmann 2023-11-07 16:36:48 +00:00
parent 1ac7e24fb7
commit 4ac788573b
1 changed files with 39 additions and 0 deletions
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39
library/psa_crypto.c
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@ -8464,4 +8464,43 @@ psa_status_t psa_crypto_copy_output(const uint8_t *output_copy, size_t output_co
return PSA_SUCCESS;
}
psa_status_t psa_crypto_input_copy_alloc(const uint8_t *input, size_t input_len,
psa_crypto_input_copy_t *input_copy)
{
psa_status_t status;
input_copy->buffer = NULL;
input_copy->len = 0;
/* Treat NULL and zero-length input the same.
* This is simpler than potentially calling calloc(0). */
if (input == NULL || input_len == 0) {
return PSA_SUCCESS;
}
input_copy->buffer = mbedtls_calloc(input_len, 1);
if (input_copy->buffer == NULL) {
/* Since we dealt with the zero-length case above, we know that
* a NULL return value means a failure of allocation. */
return PSA_ERROR_INSUFFICIENT_MEMORY;
}
/* From now on, we must free input_copy->buffer on error. */
input_copy->len = input_len;
status = psa_crypto_copy_input(input, input_len,
input_copy->buffer, input_copy->len);
if (status != PSA_SUCCESS) {
goto error;
}
return PSA_SUCCESS;
error:
mbedtls_free(input_copy->buffer);
input_copy->buffer = NULL;
input_copy->len = 0;
return status;
}
#endif /* MBEDTLS_PSA_CRYPTO_C */