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Add implementation of psa_crypto_alloc_and_copy()

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Signed-off-by: David Horstmann <david.horstmann@arm.com>
This commit is contained in:
David Horstmann
2023-10-31 18:03:06 +00:00
parent 0684069e44
commit cc4dfa6892
1 changed files with 45 additions and 0 deletions
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45
library/psa_crypto.c
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@@ -5545,4 +5545,49 @@ psa_status_t psa_crypto_copy_output(const uint8_t *output_copy, size_t output_co
return PSA_SUCCESS; return PSA_SUCCESS;
} }
psa_status_t psa_crypto_alloc_and_copy(const uint8_t *input, size_t input_len,
uint8_t *output, size_t output_len,
psa_crypto_buffer_copy_t *buffers)
{
psa_status_t ret;
/* Zeroize the buffers struct to ensure we can call free()
* on any pointers safely. */
memset(buffers, 0, sizeof(*buffers));
if (output != NULL) {
buffers->output = mbedtls_calloc(output_len, 1);
if (buffers->output == NULL) {
ret = PSA_ERROR_INSUFFICIENT_MEMORY;
goto error;
}
buffers->output_len = output_len;
buffers->output_original = output;
}
if (input != NULL) {
buffers->input = mbedtls_calloc(input_len, 1);
if (buffers->input == NULL) {
ret = PSA_ERROR_INSUFFICIENT_MEMORY;
goto error;
}
buffers->input_len = input_len;
if (psa_crypto_copy_input(input, input_len,
buffers->input, buffers->input_len)
!= PSA_SUCCESS) {
ret = PSA_ERROR_CORRUPTION_DETECTED;
goto error;
}
}
return PSA_SUCCESS;
error:
mbedtls_free(buffers->input);
mbedtls_free(buffers->output);
memset(buffers, 0, sizeof(*buffers));
return ret;
}
#endif /* MBEDTLS_PSA_CRYPTO_C */ #endif /* MBEDTLS_PSA_CRYPTO_C */