From d7fb66fd138380b9bb2dab5acd5b5d91de00a9ef Mon Sep 17 00:00:00 2001
From: Gilles Peskine <Gilles.Peskine@arm.com>
Date: Tue, 25 Feb 2020 19:54:27 +0100
Subject: [PATCH] If a key is not of a supported type, something went wrong

---
 programs/fuzz/fuzz_privkey.c | 8 +++++---
 programs/fuzz/fuzz_pubkey.c  | 4 +++-
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/programs/fuzz/fuzz_privkey.c b/programs/fuzz/fuzz_privkey.c
index 2a64f57d06..6c968fd54c 100644
--- a/programs/fuzz/fuzz_privkey.c
+++ b/programs/fuzz/fuzz_privkey.c
@@ -59,9 +59,11 @@ int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
         }
         else
 #endif
-            {
-                ret = 0;
-            }
+        {
+            /* The key is valid but is not of a supported type.
+             * This should not happen. */
+            abort( );
+        }
     }
     mbedtls_pk_free( &pk );
 #else
diff --git a/programs/fuzz/fuzz_pubkey.c b/programs/fuzz/fuzz_pubkey.c
index 95b75211c5..9e8035045e 100644
--- a/programs/fuzz/fuzz_pubkey.c
+++ b/programs/fuzz/fuzz_pubkey.c
@@ -60,7 +60,9 @@ int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
         else
 #endif
         {
-            ret = 0;
+            /* The key is valid but is not of a supported type.
+             * This should not happen. */
+            abort( );
         }
     }
     mbedtls_pk_free( &pk );