using glide

vendor/github.com/tjfoc/gmsm/sm2/p256.go

@@ -0,0 +1,43 @@
+/*
+Copyright Suzhou Tongji Fintech Research Institute 2017 All Rights Reserved.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+	http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package sm2
+
+import (
+	"crypto/elliptic"
+	"math/big"
+	"sync"
+)
+
+var initonce sync.Once
+var p256Sm2Params *elliptic.CurveParams
+
+// 取自elliptic的p256.go文件，修改曲线参数为sm2
+// See FIPS 186-3, section D.2.3
+func initP256Sm2() {
+	p256Sm2Params = &elliptic.CurveParams{Name: "SM2-P-256"} // 注明为SM2
+	//SM2椭	椭 圆 曲 线 公 钥 密 码 算 法 推 荐 曲 线 参 数
+	p256Sm2Params.P, _ = new(big.Int).SetString("FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00000000FFFFFFFFFFFFFFFF", 16)
+	p256Sm2Params.N, _ = new(big.Int).SetString("FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFF7203DF6B21C6052B53BBF40939D54123", 16)
+	p256Sm2Params.B, _ = new(big.Int).SetString("28E9FA9E9D9F5E344D5A9E4BCF6509A7F39789F515AB8F92DDBCBD414D940E93", 16)
+	p256Sm2Params.Gx, _ = new(big.Int).SetString("32C4AE2C1F1981195F9904466A39C9948FE30BBFF2660BE1715A4589334C74C7", 16)
+	p256Sm2Params.Gy, _ = new(big.Int).SetString("BC3736A2F4F6779C59BDCEE36B692153D0A9877CC62A474002DF32E52139F0A0", 16)
+	p256Sm2Params.BitSize = 256
+}
+
+func P256Sm2() elliptic.Curve {
+	initonce.Do(initP256Sm2)
+	return p256Sm2Params
+}