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Thu, 8 Apr 2021 14:16:46 +0000 Received: from AM0PR04MB5650.eurprd04.prod.outlook.com ([fe80::756a:86b8:8283:733d]) by AM0PR04MB5650.eurprd04.prod.outlook.com ([fe80::756a:86b8:8283:733d%6]) with mapi id 15.20.3999.032; Thu, 8 Apr 2021 14:16:46 +0000 From: Varad Gautam To: linux-crypto@vger.kernel.org CC: varad.gautam@suse.com, dhowells@redhat.com, herbert@gondor.apana.org.au, davem@davemloft.net, vt@altlinux.org, tianjia.zhang@linux.alibaba.com, keyrings@vger.kernel.org, linux-kernel@vger.kernel.org, jarkko@kernel.org Subject: [PATCH v2 13/18] crypto: rsa-psspad: Get signature parameters from a given signature Date: Thu, 8 Apr 2021 16:15:11 +0200 Message-ID: <20210408141516.11369-14-varad.gautam@suse.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210408141516.11369-1-varad.gautam@suse.com> References: <20210408141516.11369-1-varad.gautam@suse.com> Content-Transfer-Encoding: quoted-printable Content-Type: text/plain X-Originating-IP: [95.90.93.216] X-ClientProxiedBy: ZR0P278CA0137.CHEP278.PROD.OUTLOOK.COM (2603:10a6:910:40::16) To AM0PR04MB5650.eurprd04.prod.outlook.com (2603:10a6:208:128::18) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from xps13.suse.cz (95.90.93.216) by ZR0P278CA0137.CHEP278.PROD.OUTLOOK.COM (2603:10a6:910:40::16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4020.16 via Frontend Transport; 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Signed-off-by: Varad Gautam --- v2: Set mgf_hash_algo in psspad_set_sig_params. v1 assumed this to be the s= ame as the digest hash. crypto/rsa-psspad.c | 21 ++++++++++++++++++++- include/crypto/internal/rsa-common.h | 2 ++ 2 files changed, 22 insertions(+), 1 deletion(-) diff --git a/crypto/rsa-psspad.c b/crypto/rsa-psspad.c index 855e82ca071a7..eec303bb55b2d 100644 --- a/crypto/rsa-psspad.c +++ b/crypto/rsa-psspad.c @@ -9,6 +9,7 @@ #include #include #include +#include =20 static int psspad_setup_shash(struct crypto_shash **hash_tfm, struct shash= _desc **desc, const char *hash_algo) @@ -33,6 +34,23 @@ static void psspad_free_shash(struct crypto_shash *hash_= tfm, struct shash_desc * crypto_free_shash(hash_tfm); } =20 +static int psspad_set_sig_params(struct crypto_akcipher *tfm, + const void *sig, + unsigned int siglen) +{ + struct akcipher_instance *inst =3D akcipher_alg_instance(tfm); + struct rsapad_inst_ctx *ictx =3D akcipher_instance_ctx(inst); + const struct public_key_signature *s =3D sig; + + if (!sig) + return -EINVAL; + + ictx->salt_len =3D s->salt_length; + ictx->mgf_hash_algo =3D s->mgf_hash_algo; + + return 0; +} + static int psspad_s_v_e_d(struct akcipher_request *req) { return -EOPNOTSUPP; @@ -48,7 +66,8 @@ static struct akcipher_alg psspad_alg =3D { .verify =3D psspad_s_v_e_d, .set_pub_key =3D rsapad_set_pub_key, .set_priv_key =3D rsapad_set_priv_key, - .max_size =3D rsapad_get_max_size + .max_size =3D rsapad_get_max_size, + .set_sig_params =3D psspad_set_sig_params }; =20 static int psspad_create(struct crypto_template *tmpl, struct rtattr **tb) diff --git a/include/crypto/internal/rsa-common.h b/include/crypto/internal= /rsa-common.h index 4fa3cf5a989cc..8b7ba0174d5bf 100644 --- a/include/crypto/internal/rsa-common.h +++ b/include/crypto/internal/rsa-common.h @@ -26,6 +26,8 @@ struct rsapad_tfm_ctx { struct rsapad_inst_ctx { struct crypto_akcipher_spawn spawn; const struct rsa_asn1_template *digest_info; + u16 salt_len; + const char *mgf_hash_algo; }; =20 struct rsapad_akciper_req_ctx { --=20 2.30.2