On Fri, Mar 05, 2021 at 03:59:49PM -0500, Stefan Berger wrote:
> From: Saulo Alessandre <saulo.alessandre@xxxxxxxxxx>
>
> Add the parameters for the NIST P384 curve and define a new curve ID
> for it. Make the curve available in ecc_get_curve.
>
> Summary of changes:
>
> * crypto/ecc_curve_defs.h
> - add nist_p384 params
>
> * include/crypto/ecdh.h
> - add ECC_CURVE_NIST_P384
>
> * crypto/ecc.c
> - change ecc_get_curve to accept nist_p384
>
> Signed-off-by: Saulo Alessandre <saulo.alessandre@xxxxxxxxxx>
> Tested-by: Stefan Berger <stefanb@xxxxxxxxxxxxx>
> ---
> crypto/ecc.c | 2 ++
> crypto/ecc_curve_defs.h | 32 ++++++++++++++++++++++++++++++++
> include/crypto/ecdh.h | 1 +
> 3 files changed, 35 insertions(+)
>
> diff --git a/crypto/ecc.c b/crypto/ecc.c
> index 25e79fd70566..f6cef5a7942d 100644
> --- a/crypto/ecc.c
> +++ b/crypto/ecc.c
> @@ -50,6 +50,8 @@ const struct ecc_curve *ecc_get_curve(unsigned int curve_id)
> return fips_enabled ? NULL : &nist_p192;
> case ECC_CURVE_NIST_P256:
> return &nist_p256;
> + case ECC_CURVE_NIST_P384:
> + return &nist_p384;
> default:
> return NULL;
> }
> 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
> --
> 2.29.2
>
Acked-by: Jarkko Sakkinen <jarkko@xxxxxxxxxx>
/Jarkko
