RE: [EXTERNAL] [PATCH v8 1/3] cryptodev: add ec points to sm2 op

["Kusztal, ArkadiuszX" <arkadiuszx.kusztal@intel.com>]

Hi Akhil,

> -----Original Message-----
> From: Akhil Goyal <gakhil@marvell.com>
> Sent: Wednesday, November 6, 2024 11:09 AM
> To: Kusztal, ArkadiuszX <arkadiuszx.kusztal@intel.com>; dev@dpdk.org
> Cc: Dooley, Brian <brian.dooley@intel.com>
> Subject: RE: [EXTERNAL] [PATCH v8 1/3] cryptodev: add ec points to sm2 op
> 
> > In the case when PMD cannot support the full process of the SM2, but
> > elliptic curve computation only, additional fields are needed to
> > handle such a case.
> >
> > Points C1, kP therefore were added to the SM2 crypto operation struct.
> >
> > Signed-off-by: Arkadiusz Kusztal <arkadiuszx.kusztal@intel.com>
> > ---
> 
> Please rebase. CI failed to apply patch.
> Please be proactive to fix CI issues if reported.

I have deferred the whole patchset, no further action is necessary.

> 
> >  doc/guides/rel_notes/release_24_11.rst |  3 ++
> >  lib/cryptodev/rte_crypto_asym.h        | 56 +++++++++++++++++++-------
> >  2 files changed, 45 insertions(+), 14 deletions(-)
> >
> > diff --git a/doc/guides/rel_notes/release_24_11.rst
> > b/doc/guides/rel_notes/release_24_11.rst
> > index 53a5ffebe5..ee9e2cea3c 100644
> > --- a/doc/guides/rel_notes/release_24_11.rst
> > +++ b/doc/guides/rel_notes/release_24_11.rst
> > @@ -413,6 +413,9 @@ ABI Changes
> >    added new structure ``rte_node_xstats`` to ``rte_node_register`` and
> >    added ``xstat_off`` to ``rte_node``.
> >
> > +* cryptodev: The ``rte_crypto_sm2_op_param`` struct member to hold
> > ciphertext
> > +  is changed to union data type. This change is to support partial SM2
> calculation.
> > +
> >
> >  Known Issues
> >  ------------
> > diff --git a/lib/cryptodev/rte_crypto_asym.h
> > b/lib/cryptodev/rte_crypto_asym.h index aeb46e688e..f095cebcd0 100644
> > --- a/lib/cryptodev/rte_crypto_asym.h
> > +++ b/lib/cryptodev/rte_crypto_asym.h
> > @@ -646,6 +646,8 @@ enum rte_crypto_sm2_op_capa {
> >  	/**< Random number generator supported in SM2 ops. */
> >  	RTE_CRYPTO_SM2_PH,
> >  	/**< Prehash message before crypto op. */
> > +	RTE_CRYPTO_SM2_PARTIAL,
> > +	/**< Calculate elliptic curve points only. */
> >  };
> >
> >  /**
> > @@ -673,20 +675,46 @@ struct rte_crypto_sm2_op_param {
> >  	 * will be overwritten by the PMD with the decrypted length.
> >  	 */
> >
> > -	rte_crypto_param cipher;
> > -	/**<
> > -	 * Pointer to input data
> > -	 * - to be decrypted for SM2 private decrypt.
> > -	 *
> > -	 * Pointer to output data
> > -	 * - for SM2 public encrypt.
> > -	 * In this case the underlying array should have been allocated
> > -	 * with enough memory to hold ciphertext output (at least X bytes
> > -	 * for prime field curve of N bytes and for message M bytes,
> > -	 * where X = (C1 || C2 || C3) and computed based on SM2 RFC as
> > -	 * C1 (1 + N + N), C2 = M, C3 = N. The cipher.length field will
> > -	 * be overwritten by the PMD with the encrypted length.
> > -	 */
> > +	union {
> > +		rte_crypto_param cipher;
> > +		/**<
> > +		 * Pointer to input data
> > +		 * - to be decrypted for SM2 private decrypt.
> > +		 *
> > +		 * Pointer to output data
> > +		 * - for SM2 public encrypt.
> > +		 * In this case the underlying array should have been allocated
> > +		 * with enough memory to hold ciphertext output (at least X
> > bytes
> > +		 * for prime field curve of N bytes and for message M bytes,
> > +		 * where X = (C1 || C2 || C3) and computed based on SM2 RFC
> > as
> > +		 * C1 (1 + N + N), C2 = M, C3 = N. The cipher.length field will
> > +		 * be overwritten by the PMD with the encrypted length.
> > +		 */
> > +		struct {
> > +			struct rte_crypto_ec_point c1;
> > +			/**<
> > +			 * This field is used only when PMD does not support
> the
> > full
> > +			 * process of the SM2 encryption/decryption, but the
> > elliptic
> > +			 * curve part only.
> > +			 *
> > +			 * In the case of encryption, it is an output - point C1 =
> > (x1,y1).
> > +			 * In the case of decryption, if is an input - point C1 =
> > (x1,y1).
> > +			 *
> > +			 * Must be used along with the
> > RTE_CRYPTO_SM2_PARTIAL flag.
> > +			 */
> > +			struct rte_crypto_ec_point kp;
> > +			/**<
> > +			 * This field is used only when PMD does not support
> the
> > full
> > +			 * process of the SM2 encryption/decryption, but the
> > elliptic
> > +			 * curve part only.
> > +			 *
> > +			 * It is an output in the encryption case, it is a point
> > +			 * [k]P = (x2,y2).
> > +			 *
> > +			 * Must be used along with the
> > RTE_CRYPTO_SM2_PARTIAL flag.
> > +			 */
> > +		};
> > +	};
> >
> >  	rte_crypto_uint id;
> >  	/**< The SM2 id used by signer and verifier. */
> > --
> > 2.34.1