yaole
98 lines
1.9 KiB
Go
98 lines
1.9 KiB
Go
package sm9
|
|
|
|
import (
|
|
"math/big"
|
|
|
|
"xdx.jelly/xgcl/sm/sm9/errors"
|
|
"xdx.jelly/xgcl/sm/sm9/internal/bn256"
|
|
)
|
|
|
|
const (
|
|
// Sm9RefMaxBits defined in GMT 0018
|
|
Sm9RefMaxBits = 256
|
|
|
|
// Sm9RefMaxLen defined in GMT 0018
|
|
Sm9RefMaxLen = (Sm9RefMaxBits + 7) / 8
|
|
|
|
byteSize = Sm9RefMaxLen
|
|
|
|
// Sm9Strict UnmarshalBinary check data strict
|
|
Sm9Strict = false
|
|
|
|
// hidSign 签名hid
|
|
hidSign byte = 1
|
|
|
|
// hidKeyExchange 密钥交换hid
|
|
hidKeyExchange byte = 3
|
|
|
|
// hidKeyEncapsule 密钥封装hid
|
|
hidKeyEncapsule byte = 3
|
|
|
|
// hidEncryption 加解密hid
|
|
hidEncryption byte = 3
|
|
)
|
|
|
|
// G1 is the group G<sup>1</sup>
|
|
type G1 = bn256.G1
|
|
|
|
// G2 is the group G2
|
|
type G2 = bn256.G2
|
|
|
|
// GT is the group GT
|
|
type GT = bn256.GT
|
|
|
|
type PublicKey = []byte
|
|
|
|
var (
|
|
// Pairing is the pairing funcition e: G1 x G2 -> GT.
|
|
Pairing func(g1 *G1, g2 *G2) *GT = bn256.Pair
|
|
pairing func(e *GT, g1 *G1, g2 *G2) = bn256.PairLol
|
|
|
|
// N is the group order of G1, G2 and GT
|
|
N = bn256.N
|
|
|
|
// P is the character of finite field where E lives.
|
|
P = bn256.P
|
|
|
|
g1Gen *G1 = new(G1).ScalarBaseMult(new(big.Int).SetInt64(1))
|
|
g2Gen *G2 = new(G2).ScalarBaseMult(new(big.Int).SetInt64(1))
|
|
gtGen *GT = Pairing(g1Gen, g2Gen)
|
|
nMinusOne = new(big.Int).Sub(N, new(big.Int).SetInt64(1))
|
|
)
|
|
|
|
// ByteSize returns the size of the bytes number of order (which is 32).
|
|
func ByteSize() int {
|
|
return byteSize
|
|
}
|
|
|
|
// OrderN return the order of group G1, G2 and GT
|
|
// Deprecated: use Order instead.
|
|
var OrderN = Order
|
|
|
|
// Order returns the order of group G1, G2 and GT.
|
|
func Order() *big.Int {
|
|
return N
|
|
}
|
|
|
|
// Prime returns the character of finite field.
|
|
func Prime() *big.Int {
|
|
return P
|
|
}
|
|
|
|
// G1Generator returns the generator of G1.
|
|
func G1Generator() *G1 {
|
|
return g1Gen
|
|
}
|
|
|
|
// G2Generator returns the generator of G2.
|
|
func G2Generator() *G2 {
|
|
return g2Gen
|
|
}
|
|
|
|
// GTGenerator returns the generator of GT.
|
|
func GTGenerator() *GT {
|
|
return gtGen
|
|
}
|
|
|
|
var ErrKGCRebuildKey = errors.ErrKGCRebuildKey
|