Merge pull request #19 from insolar/remove-assabler

remove assembly code

elliptic/elliptic.go

@@ -362,13 +362,27 @@ var initonce sync.Once
 var p384 *CurveParams
 var p521 *CurveParams
 var p256k *CurveParams
+var p256 *CurveParams
 
 func initAll() {
 	initP224()
 	initP256()
 	initP384()
 	initP521()
-	initSecp256k1()
+	initP256()
+	initP256K()
+}
+
+func initP256() {
+	// See FIPS 186-3, section D.2.3
+	p256 = &CurveParams{Name: "P-256"}
+	p256.P, _ = new(big.Int).SetString("115792089210356248762697446949407573530086143415290314195533631308867097853951", 10)
+	p256.N, _ = new(big.Int).SetString("115792089210356248762697446949407573529996955224135760342422259061068512044369", 10)
+	p256.A, _ = new(big.Int).SetString("ffffffff00000001000000000000000000000000fffffffffffffffffffffffc", 16)
+	p256.B, _ = new(big.Int).SetString("5ac635d8aa3a93e7b3ebbd55769886bc651d06b0cc53b0f63bce3c3e27d2604b", 16)
+	p256.Gx, _ = new(big.Int).SetString("6b17d1f2e12c4247f8bce6e563a440f277037d812deb33a0f4a13945d898c296", 16)
+	p256.Gy, _ = new(big.Int).SetString("4fe342e2fe1a7f9b8ee7eb4a7c0f9e162bce33576b315ececbb6406837bf51f5", 16)
+	p256.BitSize = 256
 }
 
 func initP384() {
@@ -395,7 +409,7 @@ func initP521() {
 	p521.BitSize = 521
 }
 
-func initSecp256k1() {
+func initP256K() {
 	p256k = &CurveParams{Name: "P-256K"}
 	p256k.P, _ = new(big.Int).SetString("fffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2f", 16)
 	p256k.N, _ = new(big.Int).SetString("fffffffffffffffffffffffffffffffebaaedce6af48a03bbfd25e8cd0364141", 16)