commit 2222d689c547b9eb8063ca019607543809612ee5
author Steven Cooreman <steven.cooreman@silabs.com> Mon Jan 11 18:45:22 2021 +0100
committer Ronald Cron <ronald.cron@arm.com> Wed Feb 10 15:34:52 2021 +0100
tree e437a5001b7095fecd9513e7cae606b05e2ccad2
parent a0b4decff0917ec3b393b5d942609ecb05d46f41

Allow GCM selftest to skip non-12-byte IVs for ALT implementations

Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>

library/gcm.c

diff --git a/library/gcm.c b/library/gcm.c
index 2363e58..f237bab 100644
--- a/library/gcm.c
+++ b/library/gcm.c
@@ -819,6 +819,15 @@
                                 add_len_test_data[i],
                                 pt_test_data[pt_index_test_data[i]],
                                 buf, 16, tag_buf );
+#if defined(MBEDTLS_GCM_ALT)
+            /* Allow alternative implementations to only support 12-byte nonces. */
+            if( ret == MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED &&
+                iv_len_test_data[i] != 12 )
+            {
+                mbedtls_printf( "skipped\n" );
+                break;
+            }
+#endif /* defined(MBEDTLS_GCM_ALT) */
             if( ret != 0 )
                 goto exit;