You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 

86 lines
2.0 KiB

package account
import (
"errors"
"github.com/tendermint/ed25519"
"github.com/tendermint/tendermint/binary"
. "github.com/tendermint/tendermint/common"
)
// PubKey is part of Account and Validator.
type PubKey interface {
TypeByte() byte
IsNil() bool
Address() []byte
VerifyBytes(msg []byte, sig Signature) bool
}
// Types of PubKey implementations
const (
PubKeyTypeNil = byte(0x00)
PubKeyTypeEd25519 = byte(0x01)
)
// for binary.readReflect
var _ = binary.RegisterInterface(
struct{ PubKey }{},
binary.ConcreteType{PubKeyNil{}},
binary.ConcreteType{PubKeyEd25519{}},
)
//-------------------------------------
// Implements PubKey
type PubKeyNil struct{}
func (key PubKeyNil) TypeByte() byte { return PubKeyTypeNil }
func (key PubKeyNil) IsNil() bool { return true }
func (key PubKeyNil) Address() []byte {
panic("PubKeyNil has no address")
}
func (key PubKeyNil) VerifyBytes(msg []byte, sig_ Signature) bool {
panic("PubKeyNil cannot verify messages")
}
func (key PubKeyEd25519) ValidateBasic() error {
if len(key) != ed25519.PublicKeySize {
return errors.New("Invalid PubKeyEd25519 key size")
}
return nil
}
func (key PubKeyNil) String() string {
return "PubKeyNil{}"
}
//-------------------------------------
// Implements PubKey
type PubKeyEd25519 []byte
func (pubKey PubKeyEd25519) TypeByte() byte { return PubKeyTypeEd25519 }
func (pubKey PubKeyEd25519) IsNil() bool { return false }
// TODO: Or should this just be BinaryRipemd160(key)? (The difference is the TypeByte.)
func (pubKey PubKeyEd25519) Address() []byte { return binary.BinaryRipemd160(pubKey) }
func (pubKey PubKeyEd25519) VerifyBytes(msg []byte, sig_ Signature) bool {
sig, ok := sig_.(SignatureEd25519)
if !ok {
panic("PubKeyEd25519 expects an SignatureEd25519 signature")
}
pubKeyBytes := new([32]byte)
copy(pubKeyBytes[:], pubKey)
sigBytes := new([64]byte)
copy(sigBytes[:], sig)
return ed25519.Verify(pubKeyBytes, msg, sigBytes)
}
func (pubKey PubKeyEd25519) String() string {
return Fmt("PubKeyEd25519{%X}", []byte(pubKey))
}