1 files changed, 4 insertions, 0 deletions
diff --git a/src/sha.c b/src/sha.c
index cfbc956..f979bc4 100644
--- a/src/sha.c
+++ b/src/sha.c
@@ -1,3 +1,7 @@
+/*
+* SPDX-License-Identifier: GPL-2.0-or-later
+*/
+
 /* sha.c - Functions to compute the SHA1 hash (message-digest) of files
    or blocks of memory.  Complies to the NIST specification FIPS-180-1.