package account import ( "errors" "github.com/tendermint/tendermint/Godeps/_workspace/src/github.com/tendermint/ed25519" "github.com/tendermint/tendermint/binary" . "github.com/tendermint/tendermint/common" ) // PubKey is part of Account and Validator. type PubKey interface { IsNil() bool Address() []byte VerifyBytes(msg []byte, sig Signature) bool } // Types of PubKey implementations const ( PubKeyTypeEd25519 = byte(0x01) ) // for binary.readReflect var _ = binary.RegisterInterface( struct{ PubKey }{}, binary.ConcreteType{PubKeyEd25519{}, PubKeyTypeEd25519}, ) //------------------------------------- // Implements PubKey type PubKeyEd25519 []byte 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) } // TODO: Consider returning a reason for failure, or logging a runtime type mismatch. func (pubKey PubKeyEd25519) VerifyBytes(msg []byte, sig_ Signature) bool { sig, ok := sig_.(SignatureEd25519) if !ok { return false } pubKeyBytes := new([32]byte) copy(pubKeyBytes[:], pubKey) sigBytes := new([64]byte) copy(sigBytes[:], sig) return ed25519.Verify(pubKeyBytes, msg, sigBytes) } func (pubKey PubKeyEd25519) ValidateBasic() error { if len(pubKey) != ed25519.PublicKeySize { return errors.New("Invalid PubKeyEd25519 key size") } return nil } func (pubKey PubKeyEd25519) String() string { return Fmt("PubKeyEd25519{%X}", []byte(pubKey)) }