1 files changed, 9 insertions, 0 deletions
diff --git a/signkey.c b/signkey.c
index 58db46b..f0c0f97 100644
--- a/signkey.c
+++ b/signkey.c
@@ -580,6 +580,10 @@ int cmp_base64_key(const unsigned char* keyblob, unsigned int keybloblen,
 
 	/* now we have the actual data */
 	len = line->len - line->pos;
+	if (len == 0) {
+		/* base64_decode doesn't like NULL argument */
+		return DROPBEAR_FAILURE;
+	}
 	decodekeylen = len * 2; /* big to be safe */
 	decodekey = buf_new(decodekeylen);
 
@@ -623,3 +627,8 @@ out:
 	return ret;
 }
 #endif
+
+#ifdef DROPBEAR_FUZZ
+const char * const * fuzz_signkey_names = signkey_names;
+
+#endif