commit 9a94480685ee3280be70aeaf650ee6d49ffdfe74
author Gilles Peskine <Gilles.Peskine@arm.com> Thu Jun 21 09:35:35 2018 +0200
committer itayzafrir <itay.zafrir@arm.com> Wed Sep 12 16:24:50 2018 +0300
tree 844555d3e223a75e60f3603d76bfe9f4e2d9b437
parent 775b8e97b1795a720870c304413a9f1f65a4180d

Convert ERR_ASN1 error codes to PSA

This fixes the error code when psa_export_key on an asymmetric key
reports that the output buffer is too small.

library/psa_crypto.c

diff --git a/library/psa_crypto.c b/library/psa_crypto.c
index ba80912..adcadf3 100644
--- a/library/psa_crypto.c
+++ b/library/psa_crypto.c
@@ -39,6 +39,7 @@
 #endif
 
 #include "mbedtls/arc4.h"
+#include "mbedtls/asn1.h"
 #include "mbedtls/blowfish.h"
 #include "mbedtls/camellia.h"
 #include "mbedtls/cipher.h"
@@ -144,6 +145,17 @@
         case MBEDTLS_ERR_ARC4_HW_ACCEL_FAILED:
             return( PSA_ERROR_HARDWARE_FAILURE );
 
+        case MBEDTLS_ERR_ASN1_OUT_OF_DATA:
+        case MBEDTLS_ERR_ASN1_UNEXPECTED_TAG:
+        case MBEDTLS_ERR_ASN1_INVALID_LENGTH:
+        case MBEDTLS_ERR_ASN1_LENGTH_MISMATCH:
+        case MBEDTLS_ERR_ASN1_INVALID_DATA:
+            return( PSA_ERROR_INVALID_ARGUMENT );
+        case MBEDTLS_ERR_ASN1_ALLOC_FAILED:
+            return( PSA_ERROR_INSUFFICIENT_MEMORY );
+        case MBEDTLS_ERR_ASN1_BUF_TOO_SMALL:
+            return( PSA_ERROR_BUFFER_TOO_SMALL );
+
         case MBEDTLS_ERR_BLOWFISH_INVALID_KEY_LENGTH:
         case MBEDTLS_ERR_BLOWFISH_INVALID_INPUT_LENGTH:
             return( PSA_ERROR_NOT_SUPPORTED );