public static bool EcPubKeyCreate(Context ctx, PubKey pubkey, byte[] seckey)
{
GeJ r = new GeJ();
Ge ge = new Ge();
Scalar scalar = new Scalar();
int num = !Scalar.SetB32(scalar, seckey) & !Scalar.IsZero(scalar) ? 1 : 0;
if (num != 0)
{
EcMultGen.secp256k1_ecmult_gen(ctx.EcMultGenCtx, out r, scalar);
Group.SetGeJ(ge, r);
Secp256K1T.SavePubKey(pubkey, ge);
}
Scalar.Clear(scalar);
return(num != 0);
}
public static void Blind(EcmultGenContext ctx, byte[] seed32)
{
Scalar scalar = new Scalar();
Fe fe = new Fe();
Rfc6979HmacSha256T rng = new Rfc6979HmacSha256T();
byte[] numArray = new byte[64];
if (seed32 == null)
{
Group.secp256k1_gej_set_ge(ctx.Initial, Group.Secp256K1GeConstG);
Group.secp256k1_gej_neg(ctx.Initial, ctx.Initial);
ctx.Blind.SetInt(1U);
}
byte[] b32 = Scalar.GetB32(ctx.Blind);
Util.Memcpy((Array)b32, 0, (Array)numArray, 0, 32);
if (seed32 != null)
{
Util.Memcpy((Array)seed32, 0, (Array)numArray, 32, 32);
}
Hash.Rfc6979HmacSha256Initialize(rng, numArray, seed32 != null ? 64U : 32U);
Util.MemSet(numArray, (byte)0, numArray.Length);
bool overflow;
do
{
Hash.Rfc6979HmacSha256Generate(rng, b32, 32);
overflow = !Field.SetB32(fe, b32) | Field.IsZero(fe);
}while (overflow);
Group.secp256k1_gej_rescale(ctx.Initial, fe);
Field.Clear(fe);
do
{
Hash.Rfc6979HmacSha256Generate(rng, b32, 32);
Scalar.SetB32(scalar, b32, ref overflow);
overflow |= Scalar.IsZero(scalar);
}while (overflow);
Hash.Rfc6979HmacSha256Finalize(rng);
Util.MemSet(b32, (byte)0, 32);
GeJ r;
EcMultGen.secp256k1_ecmult_gen(ctx, out r, scalar);
Scalar.Negate(scalar, scalar);
ctx.Blind = scalar.Clone();
ctx.Initial = r.Clone();
Scalar.Clear(scalar);
Group.secp256k1_gej_clear(r);
}
public static bool EcPubKeyCreate(Context ctx, PubKey pubkey, byte[] seckey)
{
GeJ pj = new GeJ();
Ge p = new Ge();
var sec = new Scalar();
var overflow = Scalar.SetB32(sec, seckey);
var ret = !overflow & !Scalar.IsZero(sec);
if (ret)
{
EcMultGen.secp256k1_ecmult_gen(ctx.EcMultGenCtx, out pj, sec);
Group.SetGeJ(p, pj);
SavePubKey(pubkey, p);
}
Scalar.Clear(sec);
return(ret);
}
