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crypto: ecc - Add NIST P521 curve parameters

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Add the parameters for the NIST P521 curve and define a new curve ID
for it. Make the curve available in ecc_get_curve.

Tested-by: Lukas Wunner <lukas@wunner.de>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Stefan Berger 2024-04-04 10:18:51 -04:00 committed by Herbert Xu
parent 114e80437e
commit 288b46c57c
3 changed files with 48 additions and 0 deletions
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2
crypto/ecc.c
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@ -60,6 +60,8 @@ const struct ecc_curve *ecc_get_curve(unsigned int curve_id)
return &nist_p256;
case ECC_CURVE_NIST_P384:
return &nist_p384;
case ECC_CURVE_NIST_P521:
return &nist_p521;
default:
return NULL;
}

45
crypto/ecc_curve_defs.h
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@ -89,6 +89,51 @@ static struct ecc_curve nist_p384 = {
.b = nist_p384_b
};
/* NIST P-521 */
static u64 nist_p521_g_x[] = { 0xf97e7e31c2e5bd66ull, 0x3348b3c1856a429bull,
0xfe1dc127a2ffa8deull, 0xa14b5e77efe75928ull,
0xf828af606b4d3dbaull, 0x9c648139053fb521ull,
0x9e3ecb662395b442ull, 0x858e06b70404e9cdull,
0xc6ull };
static u64 nist_p521_g_y[] = { 0x88be94769fd16650ull, 0x353c7086a272c240ull,
0xc550b9013fad0761ull, 0x97ee72995ef42640ull,
0x17afbd17273e662cull, 0x98f54449579b4468ull,
0x5c8a5fb42c7d1bd9ull, 0x39296a789a3bc004ull,
0x118ull };
static u64 nist_p521_p[] = { 0xffffffffffffffffull, 0xffffffffffffffffull,
0xffffffffffffffffull, 0xffffffffffffffffull,
0xffffffffffffffffull, 0xffffffffffffffffull,
0xffffffffffffffffull, 0xffffffffffffffffull,
0x1ffull };
static u64 nist_p521_n[] = { 0xbb6fb71e91386409ull, 0x3bb5c9b8899c47aeull,
0x7fcc0148f709a5d0ull, 0x51868783bf2f966bull,
0xfffffffffffffffaull, 0xffffffffffffffffull,
0xffffffffffffffffull, 0xffffffffffffffffull,
0x1ffull };
static u64 nist_p521_a[] = { 0xfffffffffffffffcull, 0xffffffffffffffffull,
0xffffffffffffffffull, 0xffffffffffffffffull,
0xffffffffffffffffull, 0xffffffffffffffffull,
0xffffffffffffffffull, 0xffffffffffffffffull,
0x1ffull };
static u64 nist_p521_b[] = { 0xef451fd46b503f00ull, 0x3573df883d2c34f1ull,
0x1652c0bd3bb1bf07ull, 0x56193951ec7e937bull,
0xb8b489918ef109e1ull, 0xa2da725b99b315f3ull,
0x929a21a0b68540eeull, 0x953eb9618e1c9a1full,
0x051ull };
static struct ecc_curve nist_p521 = {
.name = "nist_521",
.nbits = 521,
.g = {
.x = nist_p521_g_x,
.y = nist_p521_g_y,
.ndigits = 9,
},
.p = nist_p521_p,
.n = nist_p521_n,
.a = nist_p521_a,
.b = nist_p521_b
};
/* curve25519 */
static u64 curve25519_g_x[] = { 0x0000000000000009, 0x0000000000000000,
0x0000000000000000, 0x0000000000000000 };

1
include/crypto/ecdh.h
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@ -26,6 +26,7 @@
#define ECC_CURVE_NIST_P192 0x0001
#define ECC_CURVE_NIST_P256 0x0002
#define ECC_CURVE_NIST_P384 0x0003
#define ECC_CURVE_NIST_P521 0x0004
/**
* struct ecdh - define an ECDH private key