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 +1,54 @@
+package ec256
+
+import (
+	"crypto/elliptic"
+	"fmt"
+	"math/big"
+
+	"xdx.jelly/xgcl/internal"
+)
+
+const debug = false
+
+func printFuncName() {
+	if debug {
+		fmt.Println("Calling " + internal.GetFuncName())
+	}
+}
+
+var _ elliptic.Curve = SM2CurveParam{}
+
+// SM2CurveParam CurveParams已经实现了crypto.Curve接口,增加一层把点乘等函数覆盖了。
+type SM2CurveParam struct {
+	*elliptic.CurveParams
+}
+
+type combinedMulter interface {
+	CombinedMult(bigX, bigY *big.Int, baseScalar, scalar []byte) (x, y *big.Int)
+}
+
+// p = 2^256 - 2^224 - 2^96 + 2^64 -1
+var c256 = SM2CurveParam{CurveParams: &elliptic.CurveParams{
+	Name:    "Curve SM2",
+	P:       bigFromBase16("FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00000000FFFFFFFFFFFFFFFF"),
+	N:       bigFromBase16("FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFF7203DF6B21C6052B53BBF40939D54123"),
+	B:       bigFromBase16("28E9FA9E9D9F5E344D5A9E4BCF6509A7F39789F515AB8F92DDBCBD414D940E93"),
+	Gx:      bigFromBase16("32C4AE2C1F1981195F9904466A39C9948FE30BBFF2660BE1715A4589334C74C7"),
+	Gy:      bigFromBase16("BC3736A2F4F6779C59BDCEE36B692153D0A9877CC62A474002DF32E52139F0A0"),
+	BitSize: 256},
+}
+
+var Curve256 = c256
+
+// EC256 returns the sm2-curve
+func EC256() elliptic.Curve {
+	return c256
+}
+
+func CurveSM2() elliptic.Curve {
+	return c256
+}
+
+func (SM2CurveParam) CombinedMult(bigX, bigY *big.Int, baseScalar, scalar []byte) (x, y *big.Int) {
+	return CombinedMult(bigX, bigY, baseScalar, scalar)
+}