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(UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 70e1fb47-1155-421d-87fc-2e58f638b6e0 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: SG3AAiqQeKm8s6u9yZiSrFlkcCc69js8G2goUTyn15Opl41ls/rcDRkk6Q1UWQQ/6800hzD/4a/espc5MKPDUoZmGcEUkG7ECmDTDbu3yoQ= X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM8PR18MB4470 X-Proofpoint-ORIG-GUID: MF1VpRHDpP8Qmj5qGS3e2PuwgXmRfOIt X-Proofpoint-GUID: MF1VpRHDpP8Qmj5qGS3e2PuwgXmRfOIt X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-12-09_02,2023-12-07_01,2023-05-22_02 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Hi, > This commit adds comments for the proposal of addition of SM2 algorithm k= ey > exchange and encryption/decryption operation. >=20 > Signed-off-by: Arkadiusz Kusztal > --- > lib/cryptodev/rte_crypto_asym.h | 16 ++++++++++++++++ > 1 file changed, 16 insertions(+) >=20 > diff --git a/lib/cryptodev/rte_crypto_asym.h b/lib/cryptodev/rte_crypto_a= sym.h > index 39d3da3952..6911a14dbd 100644 > --- a/lib/cryptodev/rte_crypto_asym.h > +++ b/lib/cryptodev/rte_crypto_asym.h > @@ -639,6 +639,10 @@ struct rte_crypto_asym_xform { struct > rte_crypto_sm2_op_param { > enum rte_crypto_asym_op_type op_type; > /**< Signature generation or verification. */ > + /* > + * For key exchange operation, new struct should be created. > + * Doing that, the current struct could be split into signature and > encryption. > + */ >=20 > enum rte_crypto_auth_algorithm hash; > /**< Hash algorithm used in EC op. */ > @@ -672,6 +676,18 @@ struct rte_crypto_sm2_op_param { > * C1 (1 + N + N), C2 =3D M, C3 =3D N. The cipher.length field will > * be overwritten by the PMD with the encrypted length. > */ > + /* SM2 encryption algorithm relies on certain cryptographic functions, > + * that HW devices not necesseraly need to implement. > + * When C1 is a elliptic curve point, C2 and C3 need additional > + * operation like KDF and Hash. The question here is: should only > + * elliptic curve output parameters (namely C1 and PB) be returned to > the user, > + * or should encryption be, in this case, computed within the PMD using > + * software methods, or should both option be available? > + */ I second on splitting this struct for PKE (may be _pke and _dsa). At the same time, handling these structs should be followed by some capabil= ity check and that was what I have been thinking on to propose as asym OP capability = in this release. Right now, asymmetric capability is defined only by xform (not also by op). But we could add op capab also as below. struct rte_cryptodev_capabilities caps_sm2[] =3D { .op =3D RTE_CRYPTO_OP_TYPE_ASYMMETRIC, { .asym =3D { .xform_capa =3D { .xform_type =3D RTE_CRYPTO_ASYM_XFORM_SM2, .op_types =3D ... }, .op_capa =3D [ { .op_type =3D RTE_CRYPTO_ASYM_OP_ENC, .capa =3D (1 << RTE_CRYPTO_ASYM_SM2_PKE_KDF | 1 << RTE_CRYPTO_ASYM_SM2= _PKE_HASH) <<<< NEW ENUM >>>> } ] } } } Doing this, hash_algos member in asym xform capability today can eventually= be removed And it sounds better for an op. Also, this op capability check could be don= e once for the session. If you are also aligned, I can send an RFC for capab check. > + /* Similar applies to the key exchange in the HW. The second phase of > KE, most likely, > + * will go as far as to obtain xU,yU(xV,xV), where SW can easily > calculate SA. What does SA mean here ? Signature algorithm ??. Thanks, Gowrishankar > + * Should then both options be available? > + */ >=20 > rte_crypto_uint id; > /**< The SM2 id used by signer and verifier. */ > -- > 2.13.6