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crypto: ecc - add curve25519 params and expose them

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1. Add curve 25519 parameters in 'crypto/ecc_curve_defs.h';
2. Add curve25519 interface 'ecc_get_curve25519_param' in
   'include/crypto/ecc_curve.h', to make its parameters be
   exposed to everyone in kernel tree.

Signed-off-by: Meng Yu <yumeng18@huawei.com>
Reviewed-by: Zaibo Xu <xuzaibo@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Meng Yu
2021-03-04 14:35:49 +08:00
committed by Herbert Xu
parent 05e7b906aa
commit 8fb9340e17
3 changed files with 30 additions and 0 deletions
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17
crypto/ecc_curve_defs.h
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@@ -54,4 +54,21 @@ static struct ecc_curve nist_p256 = {
.b = nist_p256_b
};
/* curve25519 */
static u64 curve25519_g_x[] = { 0x0000000000000009, 0x0000000000000000,
0x0000000000000000, 0x0000000000000000 };
static u64 curve25519_p[] = { 0xffffffffffffffed, 0xffffffffffffffff,
0xffffffffffffffff, 0x7fffffffffffffff };
static u64 curve25519_a[] = { 0x000000000001DB41, 0x0000000000000000,
0x0000000000000000, 0x0000000000000000 };
static const struct ecc_curve ecc_25519 = {
.name = "curve25519",
.g = {
.x = curve25519_g_x,
.ndigits = 4,
},
.p = curve25519_p,
.a = curve25519_a,
};
#endif