GOSTSec/vanitygen
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use gost curve

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orignal 2017-12-19 15:15:27 -05:00
parent 0034885bb4
commit 1402c2c428
1 changed files with 31 additions and 1 deletions
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32
pattern.c
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@ -46,6 +46,33 @@ vg_exec_context_new_key(void)
return EC_KEY_new_by_curve_name(NID_secp256k1);
}
static EC_KEY *
vg_exec_context_new_gost_key(void)
{
EC_KEY * pkey = EC_KEY_new ();
// GOST 34.10-2012, param sets A
BIGNUM * a = 0, * b = 0, * p = 0, * q = 0, * x = 0, * y = 0;
BN_hex2bn(&a, "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFD94");
BN_hex2bn(&b, "A6");
BN_hex2bn(&p, "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFD97");
BN_hex2bn(&q, "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF6C611070995AD10045841B09B761B893");
BN_hex2bn(&x, "1");
BN_hex2bn(&y, "8D91E471E0989CDA27DF505A453F2B7635294F2DDF23E3B122ACC99C9E9F1E14");
BN_CTX * ctx = BN_CTX_new ();
EC_GROUP *group = EC_GROUP_new_curve_GFp (p, a, b, ctx);
EC_POINT * P = EC_POINT_new (group);
EC_POINT_set_affine_coordinates_GFp (group, P, x, y, ctx);
EC_GROUP_set_generator (group, P, q, 0);
EC_GROUP_set_curve_name (group, NID_id_GostR3410_2001);
EC_POINT_free(P);
BN_CTX_free (ctx);
EC_KEY_set_group(pkey, group);
EC_GROUP_free (group);
BN_free (a); BN_free (b); BN_free (p); BN_free (q); BN_free (x); BN_free (y);
return pkey;
}
/*
* Thread synchronization helpers
*/
@ -160,7 +187,10 @@ vg_exec_context_init(vg_context_t *vcp, vg_exec_context_t *vxcp)
vxcp->vxc_bnctx = BN_CTX_new();
assert(vxcp->vxc_bnctx);
vxcp->vxc_key = vg_exec_context_new_key();
if (vcp->vc_pubkeytype == 38) // gostcoin
vxcp->vxc_key = vg_exec_context_new_gost_key();
else
vxcp->vxc_key = vg_exec_context_new_key();
assert(vxcp->vxc_key);
EC_KEY_precompute_mult(vxcp->vxc_key, vxcp->vxc_bnctx);