linux-kernel - Re: [PATCH 1/3] add params and ids to support nist

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Date:   Fri, 19 Feb 2021 14:28:58 -0500
From:   Stefan Berger <stefanb@...ux.ibm.com>
To:     Saulo Alessandre <saulo.alessandre@...il.com>
Cc:     davem@...emloft.net, dhowells@...hat.com,
        herbert@...dor.apana.org.au, keyrings@...r.kernel.org,
        linux-crypto@...r.kernel.org, linux-integrity@...r.kernel.org,
        linux-kernel@...r.kernel.org, patrick@...terwijk.org,
        zohar@...ux.ibm.com, Saulo Alessandre <saulo.alessandre@....jus.br>
Subject: Re: [PATCH 1/3] add params and ids to support nist_p384

On 2/19/21 1:57 PM, Saulo Alessandre wrote:
> From: Saulo Alessandre <saulo.alessandre@....jus.br>
>
> * crypto/asymmetric_keys/x509_cert_parser.c
>    - prepare x509 parser to load nist_secpp384r1
>
> * crypto/ecc_curve_defs.h
>    - add nist_p384 params
>
> * include/crypto/ecdh.h
>    - add ECC_CURVE_NIST_P384
>
> * include/linux/oid_registry.h
>    - reorder OID_id_ecdsa_with_sha1
>    - add OID_id_secp384r1
> ---
>   crypto/asymmetric_keys/x509_cert_parser.c |  3 +++
>   crypto/ecc_curve_defs.h                   | 32 +++++++++++++++++++++++
>   include/crypto/ecdh.h                     |  1 +
>   include/linux/oid_registry.h              |  3 ++-
>   4 files changed, 38 insertions(+), 1 deletion(-)
>
> diff --git a/crypto/asymmetric_keys/x509_cert_parser.c b/crypto/asymmetric_keys/x509_cert_parser.c
> index d6d72420307c..03535bd8b8ef 100644
> --- a/crypto/asymmetric_keys/x509_cert_parser.c
> +++ b/crypto/asymmetric_keys/x509_cert_parser.c
> @@ -512,6 +512,9 @@ int x509_extract_key_data(void *context, size_t hdrlen,
>   		case OID_id_prime256v1:
>   			ctx->cert->pub->pkey_algo = "ecdsa-nist-p256";
>   			break;
> +		case OID_id_secp384r1:
> +			ctx->cert->pub->pkey_algo = "ecdsa-nist-p384";
> +			break;
>   		default:
>   			return -ENOPKG;
>   		}
> diff --git a/crypto/ecc_curve_defs.h b/crypto/ecc_curve_defs.h
> index 69be6c7d228f..b327732f6ef5 100644
> --- a/crypto/ecc_curve_defs.h
> +++ b/crypto/ecc_curve_defs.h
> @@ -54,4 +54,36 @@ static struct ecc_curve nist_p256 = {
>   	.b = nist_p256_b
>   };
>   
> +/* NIST P-384 */
> +static u64 nist_p384_g_x[] = { 0x3A545E3872760AB7ull, 0x5502F25DBF55296Cull,
> +				0x59F741E082542A38ull, 0x6E1D3B628BA79B98ull,
> +				0x8Eb1C71EF320AD74ull, 0xAA87CA22BE8B0537ull };
> +static u64 nist_p384_g_y[] = { 0x7A431D7C90EA0E5Full, 0x0A60B1CE1D7E819Dull,
> +				0xE9DA3113B5F0B8C0ull, 0xF8F41DBD289A147Cull,
> +				0x5D9E98BF9292DC29ull, 0x3617DE4A96262C6Full };
> +static u64 nist_p384_p[] = { 0x00000000FFFFFFFFull, 0xFFFFFFFF00000000ull,
> +				0xFFFFFFFFFFFFFFFEull, 0xFFFFFFFFFFFFFFFFull,
> +				0xFFFFFFFFFFFFFFFFull, 0xFFFFFFFFFFFFFFFFull };
> +static u64 nist_p384_n[] = { 0xECEC196ACCC52973ull, 0x581A0DB248B0A77Aull,
> +				0xC7634D81F4372DDFull, 0xFFFFFFFFFFFFFFFFull,
> +				0xFFFFFFFFFFFFFFFFull, 0xFFFFFFFFFFFFFFFFull };
> +static u64 nist_p384_a[] = { 0x00000000FFFFFFFCull, 0xFFFFFFFF00000000ull,
> +				0xFFFFFFFFFFFFFFFEull, 0xFFFFFFFFFFFFFFFFull,
> +				0xFFFFFFFFFFFFFFFFull, 0xFFFFFFFFFFFFFFFFull };
> +static u64 nist_p384_b[] = { 0x2a85c8edd3ec2aefull, 0xc656398d8a2ed19dull,
> +				0x0314088f5013875aull, 0x181d9c6efe814112ull,
> +				0x988e056be3f82d19ull, 0xb3312fa7e23ee7e4ull };
> +static struct ecc_curve nist_p384 = {
> +	.name = "nist_384",
> +	.g = {
> +		.x = nist_p384_g_x,
> +		.y = nist_p384_g_y,
> +		.ndigits = 6,
> +	},
> +	.p = nist_p384_p,
> +	.n = nist_p384_n,
> +	.a = nist_p384_a,
> +	.b = nist_p384_b
> +};
> +
>   #endif
> diff --git a/include/crypto/ecdh.h b/include/crypto/ecdh.h
> index a5b805b5526d..e4ba1de961e4 100644
> --- a/include/crypto/ecdh.h
> +++ b/include/crypto/ecdh.h
> @@ -25,6 +25,7 @@
>   /* Curves IDs */
>   #define ECC_CURVE_NIST_P192	0x0001
>   #define ECC_CURVE_NIST_P256	0x0002
> +#define ECC_CURVE_NIST_P384	0x0003
>   
>   /**
>    * struct ecdh - define an ECDH private key
> diff --git a/include/linux/oid_registry.h b/include/linux/oid_registry.h
> index ff3cad9f8c1f..d656450dfc66 100644
> --- a/include/linux/oid_registry.h
> +++ b/include/linux/oid_registry.h
> @@ -19,10 +19,10 @@
>   enum OID {
>   	OID_id_dsa_with_sha1,		/* 1.2.840.10030.4.3 */
>   	OID_id_dsa,			/* 1.2.840.10040.4.1 */
> -	OID_id_ecdsa_with_sha1,		/* 1.2.840.10045.4.1 */
>   	OID_id_ecPublicKey,		/* 1.2.840.10045.2.1 */
>   	OID_id_prime192v1,		/* 1.2.840.10045.3.1.1 */
>   	OID_id_prime256v1,		/* 1.2.840.10045.3.1.7 */
> +	OID_id_ecdsa_with_sha1,		/* 1.2.840.10045.4.1 */
>   	OID_id_ecdsa_with_sha224,	/* 1.2.840.10045.4.3.1 */
>   	OID_id_ecdsa_with_sha256,	/* 1.2.840.10045.4.3.2 */
>   	OID_id_ecdsa_with_sha384,	/* 1.2.840.10045.4.3.3 */
> @@ -64,6 +64,7 @@ enum OID {
>   
>   	OID_certAuthInfoAccess,		/* 1.3.6.1.5.5.7.1.1 */
>   	OID_sha1,			/* 1.3.14.3.2.26 */
> +	OID_id_secp384r1,		/* 1.3.132.0.34 */
>   	OID_sha256,			/* 2.16.840.1.101.3.4.2.1 */
>   	OID_sha384,			/* 2.16.840.1.101.3.4.2.2 */
>   	OID_sha512,			/* 2.16.840.1.101.3.4.2.3 */


This patch looks good to me.