/
privatekey.go
52 lines (44 loc) · 957 Bytes
/
privatekey.go
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package bls
import (
"errors"
"math/big"
)
type PrivateKey struct {
val *big.Int
}
func (pvtk *PrivateKey) Null() *PrivateKey {
pvtk.val = new(big.Int).SetUint64(0)
return pvtk
}
func (pvtk *PrivateKey) IsNull() bool {
if pvtk.val == nil {
return true
}
return pvtk.val.IsUint64() && pvtk.val.Uint64() == 0
}
func (pvtk *PrivateKey) Copy() *PrivateKey {
if pvtk.val == nil {
pvtk.val = new(big.Int).SetUint64(0)
}
ret := new(PrivateKey)
ret.Unmarshal(pvtk.Marshal())
return ret
}
func (pvtk *PrivateKey) Public() *PublicKey {
return Private2Public(pvtk)
}
func (pvtk *PrivateKey) Marshal() []byte {
if pvtk.val == nil {
pvtk.val = new(big.Int).SetUint64(0)
}
ret := make([]byte, 32)
copy(ret[32-len(pvtk.val.Bytes()):], pvtk.val.Bytes())
return ret
}
func (pvtk *PrivateKey) Unmarshal(in []byte) error {
if len(in) != 32 {
return errors.New("incorrect data length")
}
pvtk.val = new(big.Int).SetBytes(in)
return nil
}