linux-kernel - [PATCH v2 4/6] crypto: testmgr - disallow plain cbcmac(aes) in FIPS mode

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Message-Id: <20221229203708.13628-5-vdronov@redhat.com>
Date:   Thu, 29 Dec 2022 21:37:06 +0100
From:   Vladis Dronov <vdronov@...hat.com>
To:     Herbert Xu <herbert@...dor.apana.org.au>,
        "David S . Miller" <davem@...emloft.net>
Cc:     Nicolai Stange <nstange@...e.de>, Elliott Robert <elliott@....com>,
        Stephan Mueller <smueller@...onox.de>,
        Eric Biggers <ebiggers@...gle.com>,
        linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
        Vladis Dronov <vdronov@...hat.com>
Subject: [PATCH v2 4/6] crypto: testmgr - disallow plain cbcmac(aes) in FIPS mode

From: Nicolai Stange <nstange@...e.de>

cbcmac(aes) may be used only as part of the ccm(aes) construction in FIPS
mode. Since commit d6097b8d5d55 ("crypto: api - allow algs only in specific
constructions in FIPS mode") there's support for using spawns which by
itself are marked as non-approved from approved template instantiations.
So simply mark plain cbcmac(aes) as non-approved in testmgr to block any
attempts of direct instantiations in FIPS mode.

Signed-off-by: Nicolai Stange <nstange@...e.de>
Signed-off-by: Vladis Dronov <vdronov@...hat.com>
Reviewed-by: Eric Biggers <ebiggers@...gle.com>
---
 crypto/testmgr.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index 4476ac97baa5..562463a77a76 100644
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@ -4501,7 +4501,6 @@ static const struct alg_test_desc alg_test_descs[] = {
 	}, {
 #endif
 		.alg = "cbcmac(aes)",
-		.fips_allowed = 1,
 		.test = alg_test_hash,
 		.suite = {
 			.hash = __VECS(aes_cbcmac_tv_template)
-- 
2.38.1