/
ID.go
77 lines (65 loc) · 1.24 KB
/
ID.go
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package account
import (
"crypto/ed25519"
"fmt"
"github.com/btcsuite/btcutil/base58"
"hash/fnv"
)
const (
AccPrefix = "BM"
AccIDLen = 40
SocketPortInit = 52000
SocketPortRange = 12000
)
var (
EInvalidID = fmt.Errorf("invalid ID")
)
type ID string
func (id ID) ToServerPort() uint16 {
h := fnv.New32a()
h.Write([]byte(id))
sum := h.Sum32()
return uint16(SocketPortInit + sum%SocketPortRange)
}
func (id ID) String() string {
return string(id)
}
func (id ID) ToPubKey() ed25519.PublicKey {
if len(id) <= len(AccPrefix) {
return nil
}
ss := string(id[len(AccPrefix):])
return base58.Decode(ss)
}
func (id ID) ToArray() [32]byte {
if len(id) <= len(AccPrefix) {
return [32]byte{}
}
ss := string(id[len(AccPrefix):])
ssByte := base58.Decode(ss)
var arr [32]byte
copy(arr[:], ssByte[:32])
return arr
}
func (id ID) IsValid() bool {
if len(id) <= AccIDLen {
return false
}
if id[:len(AccPrefix)] != AccPrefix {
return false
}
if len(id.ToPubKey()) != ed25519.PublicKeySize {
return false
}
return true
}
func ToIDByStr(addr string) (ID, error) {
id := ID(addr)
if id.IsValid() {
return id, nil
}
return "", EInvalidID
}
func ToIDByBytes(key []byte) ID {
return ID(AccPrefix + base58.Encode(key))
}