50 lines
1.0 KiB
Go
50 lines
1.0 KiB
Go
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package ed25519
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import (
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"crypto/ed25519"
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"golang.org/x/xerrors"
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"github.com/libp2p/go-libp2p-core/peer"
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"github.com/Secured-Finance/dione/sigs"
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"github.com/Secured-Finance/dione/types"
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)
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type ed25519Signer struct{}
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func (ed25519Signer) GenPrivate() ([]byte, error) {
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_, privKey, err := ed25519.GenerateKey(nil)
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if err != nil {
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return nil, err
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}
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return privKey.Seed(), nil
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}
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func (ed25519Signer) ToPublic(priv []byte) ([]byte, error) {
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privKey := ed25519.NewKeyFromSeed(priv)
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pubKey := privKey.Public().(ed25519.PublicKey)
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return pubKey, nil
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}
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func (ed25519Signer) Sign(p []byte, msg []byte) ([]byte, error) {
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privKey := ed25519.NewKeyFromSeed(p)
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return ed25519.Sign(privKey, msg), nil
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}
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func (ed25519Signer) Verify(sig []byte, a peer.ID, msg []byte) error {
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pubKey, err := a.ExtractPublicKey()
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if err != nil {
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return err
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}
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if valid, err := pubKey.Verify(msg, sig); err != nil || !valid {
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return xerrors.Errorf("failed to verify signature")
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}
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return nil
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}
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func init() {
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sigs.RegisterSignature(types.SigTypeEd25519, ed25519Signer{})
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}
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