linux-kernel - [PATCH 5.13 284/800] crypto: testmgr - fix initialization of secret

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Date:   Mon, 12 Jul 2021 08:05:07 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Hui Tang <tanghui20@...wei.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.13 284/800] crypto: testmgr - fix initialization of secret_size

From: Hui Tang <tanghui20@...wei.com>

[ Upstream commit 2d016672528a592ada5188e53ac746e1b8b7a978 ]

Actual data length of the 'secret' is not equal to the 'secret_size'.

Since the 'curve_id' has removed in the 'secret', the 'secret_size'
should subtract the length of the 'curve_id'.

Fixes: 6763f5ea2d9a ("crypto: ecdh - move curve_id of ECDH from ...")
Signed-off-by: Hui Tang <tanghui20@...wei.com>
Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 crypto/testmgr.h | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/crypto/testmgr.h b/crypto/testmgr.h
index fe1e59da59ff..b9cf5b815532 100644
--- a/crypto/testmgr.h
+++ b/crypto/testmgr.h
@@ -2718,7 +2718,7 @@ static const struct kpp_testvec ecdh_p192_tv_template[] = {
 	"\xf4\x57\xcc\x4f\x1f\x4e\x31\xcc"
 	"\xe3\x40\x60\xc8\x06\x93\xc6\x2e"
 	"\x99\x80\x81\x28\xaf\xc5\x51\x74",
-	.secret_size = 32,
+	.secret_size = 30,
 	.b_public_size = 48,
 	.expected_a_public_size = 48,
 	.expected_ss_size = 24
@@ -2764,7 +2764,7 @@ static const struct kpp_testvec ecdh_p256_tv_template[] = {
 	"\x9f\x4a\x38\xcc\xc0\x2c\x49\x2f"
 	"\xb1\x32\xbb\xaf\x22\x61\xda\xcb"
 	"\x6f\xdb\xa9\xaa\xfc\x77\x81\xf3",
-	.secret_size = 40,
+	.secret_size = 38,
 	.b_public_size = 64,
 	.expected_a_public_size = 64,
 	.expected_ss_size = 32
@@ -2802,8 +2802,8 @@ static const struct kpp_testvec ecdh_p256_tv_template[] = {
 	"\x37\x08\xcc\x40\x5e\x7a\xfd\x6a"
 	"\x6a\x02\x6e\x41\x87\x68\x38\x77"
 	"\xfa\xa9\x44\x43\x2d\xef\x09\xdf",
-	.secret_size = 8,
-	.b_secret_size = 40,
+	.secret_size = 6,
+	.b_secret_size = 38,
 	.b_public_size = 64,
 	.expected_a_public_size = 64,
 	.expected_ss_size = 32,
-- 
2.30.2