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package key
import "golang.org/x/crypto/ed25519"
type Pub struct {
PKAlg [2]byte
KeyNum [8]byte
Key [ed25519.PublicKeySize]byte
}
func (v *Pub) Err() error {
if v.PKAlg != pkAlg {
return ErrInvalidPK
}
return nil
}
func (v *Pub) Verify(message []byte, sig *Sig) error {
if v.KeyNum != sig.KeyNum {
return ErrKeyNum
}
if !ed25519.Verify(ed25519.PublicKey(v.Key[:]), message, sig.Sig[:]) {
return ErrInvalidSig
}
return nil
}
func (v *Pub) MarshalBinary() ([]byte, error) {
return marshal(v)
}
func (v *Pub) UnmarshalBinary(data []byte) error {
return unmarshal(data, v)
}
func ParsePub(data []byte) (*Pub, error) {
pub := new(Pub)
if err := pub.UnmarshalBinary(data); err != nil {
return nil, err
}
return pub, pub.Err()
}
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