From: Sean Anderson <sean.anderson@seco.com>
Date: Tue, 16 Feb 2021 16:40:15 +0000 (-0500)
Subject: lib: rsa: Add debug message on algo mismatch
X-Git-Url: http://git.dujemihanovic.xyz/%22http:/www.sics.se/static/git-logo.png?a=commitdiff_plain;h=8f684bc12034721585f6412e39155898c8db3d65;p=u-boot.git

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>
---

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);