public static void secp256k1_ecmult_context_build(EcMultContext ctx, EventHandler <Callback> cb)
{
if (ctx.PreG != null)
{
return;
}
GeJ gj = new GeJ();
/* get the generator */
Group.secp256k1_gej_set_ge(gj, Group.Secp256K1GeConstG);
#if USE_ENDOMORPHISM
var WINDOW_G = 15;
#else
var WINDOW_G = 16;
#endif
var tblsize = (1 << ((WINDOW_G)-2));
ctx.PreG = new GeStorage[tblsize];
for (int i = 0; i < tblsize; i++)
{
ctx.PreG[i] = new GeStorage();
}
/* precompute the tables with odd multiples */
secp256k1_ecmult_odd_multiples_table_storage_var(tblsize, ctx.PreG, gj, cb);
#if USE_ENDOMORPHISM
{
secp256k1_gej g_128j;
int i;
ctx.pre_g_128 = (secp256k1_ge_storage(*)[])checked_malloc(cb, sizeof((*ctx.pre_g_128)[0]) * ECMULT_TABLE_SIZE(WINDOW_G));
///** The following two macro retrieves a particular odd multiple from a table
// * of precomputed multiples. */
//#define ECMULT_TABLE_GET_GE(r,pre,n,w) do { \
// Debug.Assert(((n) & 1) == 1); \
// Debug.Assert((n) >= -((1 << ((w)-1)) - 1)); \
// Debug.Assert((n) <= ((1 << ((w)-1)) - 1)); \
// if ((n) > 0) { \
// * (r) = (pre)[((n) - 1) / 2]; \
// } else { \
// secp256k1_ge_neg((r), (pre)[(-(n) - 1) / 2]); \
// } \
//} while(0)
//#define ECMULT_TABLE_GET_GE_STORAGE(r,pre,n,w) do { \
// Debug.Assert(((n) & 1) == 1); \
// Debug.Assert((n) >= -((1 << ((w)-1)) - 1)); \
// Debug.Assert((n) <= ((1 << ((w)-1)) - 1)); \
// if ((n) > 0) { \
// FromStorage((r), (pre)[((n) - 1) / 2]); \
// } else { \
// FromStorage((r), (pre)[(-(n) - 1) / 2]); \
// secp256k1_ge_neg((r), (r)); \
// } \
//} while(0)
public static void secp256k1_ecmult_context_init(EcMultContext ctx)
{
ctx.PreG = null;
#if USE_ENDOMORPHISM
ctx.pre_g_128 = null;
#endif
}
public static void secp256k1_ecmult_context_build(EcMultContext ctx, EventHandler <Callback> cb)
{
if (ctx.PreG != null)
{
return;
}
GeJ geJ = new GeJ();
Group.secp256k1_gej_set_ge(geJ, Group.Secp256K1GeConstG);
int n = 1 << 16 - 2;
ctx.PreG = new GeStorage[n];
for (int index = 0; index < n; ++index)
{
ctx.PreG[index] = new GeStorage();
}
EcMult.secp256k1_ecmult_odd_multiples_table_storage_var(n, ctx.PreG, geJ, cb);
}
public static void secp256k1_ecmult_context_init(EcMultContext ctx)
{
ctx.PreG = (GeStorage[])null;
}
public ContextStruct()
{
EcMultCtx = new EcMultContext();
EcMultGenCtx = new EcmultGenContext();
}
public ContextStruct()
{
this.EcMultCtx = new EcMultContext();
this.EcMultGenCtx = new EcmultGenContext();
}