init: v1.0.0

2026-05-27 23:03:00 +08:00
commit 8d97f750eb
466 changed files with 80067 additions and 0 deletions
@@ -0,0 +1,44 @@
+// +build generic32
+
+package ec256
+
+import (
+	"fmt"
+	"math/big"
+	"testing"
+
+	"xdx.jelly/xgcl/gmath"
+)
+
+// 窗口为8的预计算点
+func TestGenCurvePrecompute8(t *testing.T) {
+	table := make([]*big.Int, 0, 2*256)
+	// for i = i[k], i[i] = 0 or 1
+	// table[i] is  i[0] + i[1]*2^32 + i[2]*2^64 + ... + i[7]*2^{224}
+	for i := 0; i < 256; i++ {
+
+		k := new(big.Int)
+		for j := 7; j >= 0; j-- {
+			if (i>>j)&1 != 0 {
+				k.Add(k, gmath.BigInt1)
+			}
+			k.Lsh(k, 32)
+		}
+
+		x, y := c256.ScalarBaseMult(k.Bytes())
+		table = append(table, x)
+		table = append(table, y)
+
+	}
+
+	for _, x := range table {
+		var out [c256Limbs]uint32
+		c256FromBig(&out, x)
+		fmt.Printf("0x%08x,0x%08x,0x%08x,0x%08x,0x%08x,0x%08x,0x%08x,0x%08x,0x%08x\n",
+			out[0], out[1], out[2], out[3], out[4], out[5], out[6], out[7], out[8],
+		)
+		// fmt.Printf("&curvePoint{gfP{0x%x,0x%x,0x%x,0x%x},gfP{0x%x,0x%x,0x%x,0x%x},*newGFp(1),*newGFp(1)},\n",
+		// x.x[0], x.x[1], x.x[2], x.x[3],
+		// x.y[0], x.y[1], x.y[2], x.y[3])
+	}
+}