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crypto: ecc - Add NIST P384 curve parameters 

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@tse.jus.br>
Tested-by: Stefan Berger <stefanb@linux.ibm.com>
Acked-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Saulo Alessandre 2021-03-16 17:07:33 -04:00 committed by Herbert Xu
parent 4e6602916b
commit 703c748d5f
3 changed files with 35 additions and 0 deletions
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2
crypto/ecc.c
View File

@ -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;
}

32
crypto/ecc_curve_defs.h
View File

@ -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

1
include/crypto/ecdh.h
View File

@ -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