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78 lines
2.3 KiB
78 lines
2.3 KiB
package encoding
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import (
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"fmt"
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"github.com/tendermint/tendermint/crypto"
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"github.com/tendermint/tendermint/crypto/ed25519"
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"github.com/tendermint/tendermint/crypto/secp256k1"
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"github.com/tendermint/tendermint/crypto/sr25519"
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"github.com/tendermint/tendermint/internal/jsontypes"
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cryptoproto "github.com/tendermint/tendermint/proto/tendermint/crypto"
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)
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func init() {
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jsontypes.MustRegister((*cryptoproto.PublicKey)(nil))
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jsontypes.MustRegister((*cryptoproto.PublicKey_Ed25519)(nil))
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jsontypes.MustRegister((*cryptoproto.PublicKey_Secp256K1)(nil))
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}
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// PubKeyToProto takes crypto.PubKey and transforms it to a protobuf Pubkey
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func PubKeyToProto(k crypto.PubKey) (cryptoproto.PublicKey, error) {
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var kp cryptoproto.PublicKey
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switch k := k.(type) {
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case ed25519.PubKey:
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kp = cryptoproto.PublicKey{
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Sum: &cryptoproto.PublicKey_Ed25519{
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Ed25519: k,
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},
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}
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case secp256k1.PubKey:
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kp = cryptoproto.PublicKey{
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Sum: &cryptoproto.PublicKey_Secp256K1{
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Secp256K1: k,
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},
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}
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case sr25519.PubKey:
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kp = cryptoproto.PublicKey{
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Sum: &cryptoproto.PublicKey_Sr25519{
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Sr25519: k,
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},
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}
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default:
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return kp, fmt.Errorf("toproto: key type %v is not supported", k)
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}
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return kp, nil
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}
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// PubKeyFromProto takes a protobuf Pubkey and transforms it to a crypto.Pubkey
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func PubKeyFromProto(k cryptoproto.PublicKey) (crypto.PubKey, error) {
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switch k := k.Sum.(type) {
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case *cryptoproto.PublicKey_Ed25519:
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if len(k.Ed25519) != ed25519.PubKeySize {
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return nil, fmt.Errorf("invalid size for PubKeyEd25519. Got %d, expected %d",
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len(k.Ed25519), ed25519.PubKeySize)
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}
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pk := make(ed25519.PubKey, ed25519.PubKeySize)
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copy(pk, k.Ed25519)
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return pk, nil
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case *cryptoproto.PublicKey_Secp256K1:
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if len(k.Secp256K1) != secp256k1.PubKeySize {
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return nil, fmt.Errorf("invalid size for PubKeySecp256k1. Got %d, expected %d",
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len(k.Secp256K1), secp256k1.PubKeySize)
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}
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pk := make(secp256k1.PubKey, secp256k1.PubKeySize)
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copy(pk, k.Secp256K1)
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return pk, nil
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case *cryptoproto.PublicKey_Sr25519:
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if len(k.Sr25519) != sr25519.PubKeySize {
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return nil, fmt.Errorf("invalid size for PubKeySr25519. Got %d, expected %d",
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len(k.Sr25519), sr25519.PubKeySize)
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}
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pk := make(sr25519.PubKey, sr25519.PubKeySize)
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copy(pk, k.Sr25519)
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return pk, nil
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default:
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return nil, fmt.Errorf("fromproto: key type %v is not supported", k)
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}
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}
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