Improve documentation of mbedtls_psa_err_translate_pk()
diff --git a/include/mbedtls/psa_util.h b/include/mbedtls/psa_util.h
index f66635c..41c0e2b 100644
--- a/include/mbedtls/psa_util.h
+++ b/include/mbedtls/psa_util.h
@@ -243,15 +243,18 @@
return( MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE );
case PSA_ERROR_INSUFFICIENT_MEMORY:
return( MBEDTLS_ERR_PK_ALLOC_FAILED );
- case PSA_ERROR_COMMUNICATION_FAILURE:
- case PSA_ERROR_HARDWARE_FAILURE:
- case PSA_ERROR_TAMPERING_DETECTED:
- return( MBEDTLS_ERR_PK_HW_ACCEL_FAILED );
case PSA_ERROR_INSUFFICIENT_ENTROPY:
return( MBEDTLS_ERR_ECP_RANDOM_FAILED );
case PSA_ERROR_BAD_STATE:
return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
- default: /* should never happen */
+ /* All other failures */
+ case PSA_ERROR_COMMUNICATION_FAILURE:
+ case PSA_ERROR_HARDWARE_FAILURE:
+ case PSA_ERROR_TAMPERING_DETECTED:
+ return( MBEDTLS_ERR_PK_HW_ACCEL_FAILED );
+ default: /* We return the same as for the 'other failures',
+ * but list them separately nonetheless to indicate
+ * which failure conditions we have considered. */
return( MBEDTLS_ERR_PK_HW_ACCEL_FAILED );
}
}