vendorcode/eltan/security/lib: Implement SHA endian function

digest from vb2_digest_bufer() does not contains the correct endian.
Create cb_sha_endian() which can convert the calculated digest into big endian
or little endian when required.

BUG=N/A
TEST=Created binary and verify logging on Facebok FBG-1701

Change-Id: If828bde54c79e836a5b05ff0447645d7e06e819a
Signed-off-by: Frans Hendriks <fhendriks@eltan.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/30831
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>

1 files changed, 33 insertions, 0 deletions

diff --git a/src/vendorcode/eltan/security/include/cb_sha.h b/src/vendorcode/eltan/security/include/cb_sha.h
new file mode 100644
index 0000000000..4d087f40c9
--- /dev/null
+++ b/src/vendorcode/eltan/security/include/cb_sha.h
@@ -0,0 +1,33 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2018-2019, Eltan B.V.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __SECURITY_CB_SHA_H__
+#define __SECURITY_CB_SHA_H__
+
+#include <2rsa.h>
+#include <vb21_common.h>
+#include <vb2_api.h>
+
+/* Supported Algorithm types for hash */
+enum endian_algorithm {
+	NO_ENDIAN_ALGORITHM = 0,
+	BIG_ENDIAN_ALGORITHM = 1,
+	LITTLE_ENDIAN_ALGORITHM = 2,
+};
+
+int cb_sha_endian(enum vb2_hash_algorithm hash_alg, const uint8_t *data, uint32_t len,
+		  uint8_t *digest, enum endian_algorithm endian);
+
+#endif
\ No newline at end of file