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tie.go
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tie.go
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package bk
import (
"fmt"
"github.com/hootuu/tome/ki"
"github.com/hootuu/tome/vn"
"github.com/hootuu/utils/errors"
"time"
)
const (
TieType Type = "hotu.tie"
TieVersion = DefaultVersion
)
type Tie struct {
Tie string `json:"tie"`
Type Type `json:"type"`
Version Version `json:"version"`
Vn vn.ID `json:"vn"`
Chain Chain `json:"chain"`
Invariable *InvariableLead `json:"invariable"`
Timestamp int64 `json:"timestamp"`
Signature []byte `json:"signature"`
}
func NewTie(chain Chain, invariable Invariable, vnGuardianPri ki.PRI) (*Tie, *errors.Error) {
invariableBID, err := BuildBID(invariable)
if err != nil {
return nil, err
}
i := &Tie{
Type: TieType,
Version: TieVersion,
Vn: invariable.GetVN(),
Chain: chain,
Invariable: &InvariableLead{
Type: invariable.GetType(),
Version: invariable.GetVersion(),
Invariable: invariableBID,
},
Timestamp: time.Now().UnixMilli(),
}
i.Signature, err = i.Sign(vnGuardianPri)
if err != nil {
return nil, err
}
i.Tie = string(i.Signature)
return i, nil
}
func (i *Tie) getSignBuilder() *SignBuilder {
return NewSignBuilder().
Add("type", i.Type.S()).
Add("version", i.Version.S()).
Add("vn", i.Vn.S()).
Add("chain", i.Chain.S()).
Add("invariable", i.Invariable.S()).
Add("timestamp", fmt.Sprintf("%d", i.Timestamp))
}
func (i *Tie) Sign(pri ki.PRI) ([]byte, *errors.Error) {
signBuilder := i.getSignBuilder()
signStr, err := signBuilder.Sign(pri)
if err != nil {
return nil, err
}
return []byte(signStr), nil
}
func (i *Tie) SignVerify(vnGuardianPub ki.PUB) (bool, *errors.Error) {
signBuilder := i.getSignBuilder()
return signBuilder.Verify(vnGuardianPub, string(i.Signature))
}