From 8f684bc12034721585f6412e39155898c8db3d65 Mon Sep 17 00:00:00 2001
From: Sean Anderson <sean.anderson@seco.com>
Date: Tue, 16 Feb 2021 11:40:15 -0500
Subject: [PATCH] lib: rsa: Add debug message on algo mismatch
Currently we fail silently if there is an algorithm mismatch. To help
distinguish this failure condition.
Signed-off-by: Sean Anderson <sean.anderson@seco.com>
---
lib/rsa/rsa-verify.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/lib/rsa/rsa-verify.c b/lib/rsa/rsa-verify.c
index e34d3293d1..aee76f42d5 100644
--- a/lib/rsa/rsa-verify.c
+++ b/lib/rsa/rsa-verify.c
@@ -447,8 +447,11 @@ static int rsa_verify_with_keynode(struct image_sign_info *info,
}
algo = fdt_getprop(blob, node, "algo", NULL);
- if (strcmp(info->name, algo))
+ if (strcmp(info->name, algo)) {
+ debug("%s: Wrong algo: have %s, expected %s", __func__,
+ info->name, algo);
return -EFAULT;
+ }
prop.num_bits = fdtdec_get_int(blob, node, "rsa,num-bits", 0);
--
2.39.5