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72 lines
1.9 KiB
72 lines
1.9 KiB
package account
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import (
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"github.com/tendermint/tendermint/Godeps/_workspace/src/github.com/tendermint/ed25519"
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"github.com/tendermint/tendermint/Godeps/_workspace/src/github.com/tendermint/ed25519/extra25519"
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"github.com/tendermint/tendermint/binary"
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. "github.com/tendermint/tendermint/common"
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)
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// PrivKey is part of PrivAccount and state.PrivValidator.
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type PrivKey interface {
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Sign(msg []byte) Signature
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PubKey() PubKey
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}
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// Types of PrivKey implementations
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const (
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PrivKeyTypeEd25519 = byte(0x01)
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)
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// for binary.readReflect
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var _ = binary.RegisterInterface(
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struct{ PrivKey }{},
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binary.ConcreteType{PrivKeyEd25519{}, PrivKeyTypeEd25519},
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)
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//-------------------------------------
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// Implements PrivKey
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type PrivKeyEd25519 []byte
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func (key PrivKeyEd25519) Sign(msg []byte) Signature {
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pubKey := key.PubKey().(PubKeyEd25519)
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keyBytes := new([64]byte)
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copy(keyBytes[:32], key[:])
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copy(keyBytes[32:], pubKey[:])
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signatureBytes := ed25519.Sign(keyBytes, msg)
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return SignatureEd25519(signatureBytes[:])
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}
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func (privKey PrivKeyEd25519) PubKey() PubKey {
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privKeyBytes := new([64]byte)
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copy(privKeyBytes[:], privKey[:])
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return PubKeyEd25519(ed25519.MakePublicKey(privKeyBytes)[:])
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}
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func (privKey PrivKeyEd25519) ToCurve25519() *[32]byte {
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keyEd25519, keyCurve25519 := new([64]byte), new([32]byte)
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copy(keyEd25519[:], privKey)
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extra25519.PrivateKeyToCurve25519(keyCurve25519, keyEd25519)
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return keyCurve25519
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}
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func (privKey PrivKeyEd25519) String() string {
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return Fmt("PrivKeyEd25519{*****}")
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}
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// Deterministically generates new priv-key bytes from key.
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func (key PrivKeyEd25519) Generate(index int) PrivKeyEd25519 {
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newBytes := binary.BinarySha256(struct {
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PrivKey []byte
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Index int
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}{key, index})
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return PrivKeyEd25519(newBytes)
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}
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func GenPrivKeyEd25519() PrivKeyEd25519 {
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privKeyBytes := new([64]byte)
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copy(privKeyBytes[:32], CRandBytes(32))
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ed25519.MakePublicKey(privKeyBytes)
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return PrivKeyEd25519(privKeyBytes[:])
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}
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