commit d3e7e7d83f865591a31e5d1a2da14ca21d7da1fb
author Andres Amaya Garcia <Andres.AmayaGarcia@arm.com> Thu Jun 15 16:17:46 2017 +0100
committer Andres Amaya Garcia <Andres.AmayaGarcia@arm.com> Thu Jun 15 16:17:46 2017 +0100
tree 3463c51206916f125ff41ac439acc04ebdad6f7e
parent 2a078da134a10a829d9fd33e6450fc6415d463ae

Add comment for skipped AES-192 test condition

library/gcm.c

diff --git a/library/gcm.c b/library/gcm.c
index 7b2760a..97e9d88 100644
--- a/library/gcm.c
+++ b/library/gcm.c
@@ -757,6 +757,11 @@
 
             ret = mbedtls_gcm_setkey( &ctx, cipher, key[key_index[i]],
                                       key_len );
+            /*
+             * AES-192 is an optional feature that may be unavailable when
+             * there is an alternative underlying implementation i.e. when
+             * MBEDTLS_AES_ALT is defined.
+             */
             if( ret == MBEDTLS_ERR_AES_FEATURE_UNAVAILABLE && key_len == 192 )
             {
                 mbedtls_printf( "skipped\n" );