commit 7ecab3df4cc3a79e8b74dd6bd79cf3882e033841
author Gilles Peskine <Gilles.Peskine@arm.com> Fri Jan 26 17:56:38 2018 +0100
committer Gilles Peskine <Gilles.Peskine@arm.com> Fri Jan 26 17:56:38 2018 +0100
tree c3d0e1ff001c7e1ac5eba8fed19370aef7aabd80
parent 92143276239d95420b56a33f5abaf2b9d0850ca0

Error codes for hardware accelerator failures

Add MBEDTLS_ERR_XXX_HW_ACCEL_FAILED error codes for all cryptography
modules where the software implementation can be replaced by a hardware
implementation.

This does not include the individual message digest modules since they
currently have no way to return error codes.

This does include the higher-level md, cipher and pk modules since
alternative implementations and even algorithms can be plugged in at
runtime.

include/mbedtls/des.h

diff --git a/include/mbedtls/des.h b/include/mbedtls/des.h
index 7f8f27e..1752898 100644
--- a/include/mbedtls/des.h
+++ b/include/mbedtls/des.h
@@ -37,6 +37,7 @@
 #define MBEDTLS_DES_DECRYPT     0
 
 #define MBEDTLS_ERR_DES_INVALID_INPUT_LENGTH              -0x0032  /**< The data input has an invalid length. */
+#define MBEDTLS_ERR_DES_HW_ACCEL_FAILED                   -0x0033  /**< DES hardware accelerator failed. */
 
 #define MBEDTLS_DES_KEY_SIZE    8