mirror/gmsm
1
0
Fork 0
mirror of https://github.com/emmansun/gmsm.git synced 2025-04-26 20:26:19 +08:00
Code Issues Packages Projects Releases Wiki Activity

MAGIC - first version of SM2 P256 curve

Browse Source
This commit is contained in:
Emman 2021-01-19 14:23:56 +08:00
parent 321bf1fe2d
commit afb0962761
3 changed files with 1393 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1375
sm2/p256.go
View File

File diff suppressed because it is too large Load Diff

21
sm2/sm2_test.go
View File

@ -2,6 +2,7 @@ package sm2
import ( import (
"crypto/ecdsa" "crypto/ecdsa"
"crypto/elliptic"
"crypto/rand" "crypto/rand"
"encoding/hex" "encoding/hex"
"math/big" "math/big"
@ -55,17 +56,25 @@ func Test_encryptDecrypt(t *testing.T) {
} }
} }
func benchmarkEncrypt(b *testing.B, plaintext string) { func benchmarkEncrypt(b *testing.B, curve elliptic.Curve, plaintext string) {
for i := 0; i < b.N; i++ { for i := 0; i < b.N; i++ {
priv, _ := ecdsa.GenerateKey(P256(), rand.Reader) priv, _ := ecdsa.GenerateKey(curve, rand.Reader)
Encrypt(rand.Reader, &priv.PublicKey, []byte(plaintext)) Encrypt(rand.Reader, &priv.PublicKey, []byte(plaintext))
} }
} }
func BenchmarkLessThan32(b *testing.B) { func BenchmarkLessThan32_P256(b *testing.B) {
benchmarkEncrypt(b, "encryption standard") benchmarkEncrypt(b, elliptic.P256(), "encryption standard")
} }
func BenchmarkMoreThan32(b *testing.B) { func BenchmarkLessThan32_P256SM2(b *testing.B) {
benchmarkEncrypt(b, "encryption standard encryption standard encryption standard encryption standard encryption standard encryption standard encryption standard") benchmarkEncrypt(b, P256(), "encryption standard")
}
func BenchmarkMoreThan32_P256(b *testing.B) {
benchmarkEncrypt(b, elliptic.P256(), "encryption standard encryption standard encryption standard encryption standard encryption standard encryption standard encryption standard")
}
func BenchmarkMoreThan32_P256SM2(b *testing.B) {
benchmarkEncrypt(b, P256(), "encryption standard encryption standard encryption standard encryption standard encryption standard encryption standard encryption standard")
} }

4
sm2/util.go
View File

@ -8,7 +8,7 @@ import (
"strings" "strings"
) )
var zero = new(big.Int).SetInt64(0) var zero = big.NewInt(0)
func toBytes(curve elliptic.Curve, value *big.Int) []byte { func toBytes(curve elliptic.Curve, value *big.Int) []byte {
bytes := value.Bytes() bytes := value.Bytes()
@ -97,7 +97,7 @@ func bytes2Point(curve elliptic.Curve, bytes []byte) (*big.Int, *big.Int, int, e
return nil, nil, 0, fmt.Errorf("invalid compressed bytes length %d", len(bytes)) return nil, nil, 0, fmt.Errorf("invalid compressed bytes length %d", len(bytes))
} }
if strings.HasPrefix(curve.Params().Name, "P-") { if strings.HasPrefix(curve.Params().Name, "P-") {
// y² = x³ - 3x + b // y² = x³ - 3x + b, prime curves
x := toPointXY(bytes[1 : 1+byteLen]) x := toPointXY(bytes[1 : 1+byteLen])
y, err := calculatePrimeCurveY(curve, x) y, err := calculatePrimeCurveY(curve, x)
if err != nil { if err != nil {