package sr25519 import ( "bytes" "fmt" "github.com/oasisprotocol/curve25519-voi/primitives/sr25519" "github.com/tendermint/tendermint/crypto" "github.com/tendermint/tendermint/crypto/tmhash" ) var _ crypto.PubKey = PubKey{} const ( // PubKeySize is the size of a sr25519 public key in bytes. PubKeySize = sr25519.PublicKeySize // SignatureSize is the size of a sr25519 signature in bytes. SignatureSize = sr25519.SignatureSize ) // PubKey implements crypto.PubKey. type PubKey []byte // TypeTag satisfies the jsontypes.Tagged interface. func (PubKey) TypeTag() string { return PubKeyName } // Address is the SHA256-20 of the raw pubkey bytes. func (pubKey PubKey) Address() crypto.Address { if len(pubKey) != PubKeySize { panic("pubkey is incorrect size") } return crypto.Address(tmhash.SumTruncated(pubKey)) } // Bytes returns the PubKey byte format. func (pubKey PubKey) Bytes() []byte { return []byte(pubKey) } func (pubKey PubKey) Equals(other crypto.PubKey) bool { if otherSr, ok := other.(PubKey); ok { return bytes.Equal(pubKey[:], otherSr[:]) } return false } func (pubKey PubKey) VerifySignature(msg []byte, sigBytes []byte) bool { var srpk sr25519.PublicKey if err := srpk.UnmarshalBinary(pubKey); err != nil { return false } var sig sr25519.Signature if err := sig.UnmarshalBinary(sigBytes); err != nil { return false } st := signingCtx.NewTranscriptBytes(msg) return srpk.Verify(st, &sig) } func (pubKey PubKey) Type() string { return KeyType } func (pubKey PubKey) String() string { return fmt.Sprintf("PubKeySr25519{%X}", []byte(pubKey)) }