package crypto import ( "bytes" secp256k1 "github.com/btcsuite/btcd/btcec" "github.com/tendermint/ed25519" "github.com/tendermint/ed25519/extra25519" "github.com/tendermint/go-wire" data "github.com/tendermint/go-wire/data" . "github.com/tendermint/tmlibs/common" ) func PrivKeyFromBytes(privKeyBytes []byte) (privKey PrivKey, err error) { err = wire.ReadBinaryBytes(privKeyBytes, &privKey) return } //---------------------------------------- // DO NOT USE THIS INTERFACE. // You probably want to use PubKey // +gen wrapper:"PrivKey,Impl[PrivKeyEd25519,PrivKeySecp256k1],ed25519,secp256k1" type PrivKeyInner interface { AssertIsPrivKeyInner() Bytes() []byte Sign(msg []byte) Signature PubKey() PubKey Equals(PrivKey) bool Wrap() PrivKey } //------------------------------------- var _ PrivKeyInner = PrivKeyEd25519{} // Implements PrivKey type PrivKeyEd25519 [64]byte func (privKey PrivKeyEd25519) AssertIsPrivKeyInner() {} func (privKey PrivKeyEd25519) Bytes() []byte { return wire.BinaryBytes(PrivKey{privKey}) } func (privKey PrivKeyEd25519) Sign(msg []byte) Signature { privKeyBytes := [64]byte(privKey) signatureBytes := ed25519.Sign(&privKeyBytes, msg) return SignatureEd25519(*signatureBytes).Wrap() } func (privKey PrivKeyEd25519) PubKey() PubKey { privKeyBytes := [64]byte(privKey) pubBytes := *ed25519.MakePublicKey(&privKeyBytes) return PubKeyEd25519(pubBytes).Wrap() } func (privKey PrivKeyEd25519) Equals(other PrivKey) bool { if otherEd, ok := other.Unwrap().(PrivKeyEd25519); ok { return bytes.Equal(privKey[:], otherEd[:]) } else { return false } } func (p PrivKeyEd25519) MarshalJSON() ([]byte, error) { return data.Encoder.Marshal(p[:]) } func (p *PrivKeyEd25519) UnmarshalJSON(enc []byte) error { var ref []byte err := data.Encoder.Unmarshal(&ref, enc) copy(p[:], ref) return err } func (privKey PrivKeyEd25519) ToCurve25519() *[32]byte { keyCurve25519 := new([32]byte) privKeyBytes := [64]byte(privKey) extra25519.PrivateKeyToCurve25519(keyCurve25519, &privKeyBytes) return keyCurve25519 } func (privKey PrivKeyEd25519) String() string { return Fmt("PrivKeyEd25519{*****}") } // Deterministically generates new priv-key bytes from key. func (privKey PrivKeyEd25519) Generate(index int) PrivKeyEd25519 { newBytes := wire.BinarySha256(struct { PrivKey [64]byte Index int }{privKey, index}) var newKey [64]byte copy(newKey[:], newBytes) return PrivKeyEd25519(newKey) } func GenPrivKeyEd25519() PrivKeyEd25519 { privKeyBytes := new([64]byte) copy(privKeyBytes[:32], CRandBytes(32)) ed25519.MakePublicKey(privKeyBytes) return PrivKeyEd25519(*privKeyBytes) } // NOTE: secret should be the output of a KDF like bcrypt, // if it's derived from user input. func GenPrivKeyEd25519FromSecret(secret []byte) PrivKeyEd25519 { privKey32 := Sha256(secret) // Not Ripemd160 because we want 32 bytes. privKeyBytes := new([64]byte) copy(privKeyBytes[:32], privKey32) ed25519.MakePublicKey(privKeyBytes) return PrivKeyEd25519(*privKeyBytes) } //------------------------------------- var _ PrivKeyInner = PrivKeySecp256k1{} // Implements PrivKey type PrivKeySecp256k1 [32]byte func (privKey PrivKeySecp256k1) AssertIsPrivKeyInner() {} func (privKey PrivKeySecp256k1) Bytes() []byte { return wire.BinaryBytes(PrivKey{privKey}) } func (privKey PrivKeySecp256k1) Sign(msg []byte) Signature { priv__, _ := secp256k1.PrivKeyFromBytes(secp256k1.S256(), privKey[:]) sig__, err := priv__.Sign(Sha256(msg)) if err != nil { PanicSanity(err) } return SignatureSecp256k1(sig__.Serialize()).Wrap() } func (privKey PrivKeySecp256k1) PubKey() PubKey { _, pub__ := secp256k1.PrivKeyFromBytes(secp256k1.S256(), privKey[:]) var pub PubKeySecp256k1 copy(pub[:], pub__.SerializeCompressed()) return pub.Wrap() } func (privKey PrivKeySecp256k1) Equals(other PrivKey) bool { if otherSecp, ok := other.Unwrap().(PrivKeySecp256k1); ok { return bytes.Equal(privKey[:], otherSecp[:]) } else { return false } } func (p PrivKeySecp256k1) MarshalJSON() ([]byte, error) { return data.Encoder.Marshal(p[:]) } func (p *PrivKeySecp256k1) UnmarshalJSON(enc []byte) error { var ref []byte err := data.Encoder.Unmarshal(&ref, enc) copy(p[:], ref) return err } func (privKey PrivKeySecp256k1) String() string { return Fmt("PrivKeySecp256k1{*****}") } /* // Deterministically generates new priv-key bytes from key. func (key PrivKeySecp256k1) Generate(index int) PrivKeySecp256k1 { newBytes := wire.BinarySha256(struct { PrivKey [64]byte Index int }{key, index}) var newKey [64]byte copy(newKey[:], newBytes) return PrivKeySecp256k1(newKey) } */ func GenPrivKeySecp256k1() PrivKeySecp256k1 { privKeyBytes := [32]byte{} copy(privKeyBytes[:], CRandBytes(32)) priv, _ := secp256k1.PrivKeyFromBytes(secp256k1.S256(), privKeyBytes[:]) copy(privKeyBytes[:], priv.Serialize()) return PrivKeySecp256k1(privKeyBytes) } // NOTE: secret should be the output of a KDF like bcrypt, // if it's derived from user input. func GenPrivKeySecp256k1FromSecret(secret []byte) PrivKeySecp256k1 { privKey32 := Sha256(secret) // Not Ripemd160 because we want 32 bytes. priv, _ := secp256k1.PrivKeyFromBytes(secp256k1.S256(), privKey32) privKeyBytes := [32]byte{} copy(privKeyBytes[:], priv.Serialize()) return PrivKeySecp256k1(privKeyBytes) }