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79 lines
2.8 KiB
79 lines
2.8 KiB
package cryptoamino
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import (
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"reflect"
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amino "github.com/tendermint/go-amino"
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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/multisig"
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"github.com/tendermint/tendermint/crypto/secp256k1"
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)
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var cdc = amino.NewCodec()
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// nameTable is used to map public key concrete types back
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// to their registered amino names. This should eventually be handled
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// by amino. Example usage:
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// nameTable[reflect.TypeOf(ed25519.PubKeyEd25519{})] = ed25519.PubKeyAminoName
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var nameTable = make(map[reflect.Type]string, 3)
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func init() {
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// NOTE: It's important that there be no conflicts here,
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// as that would change the canonical representations,
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// and therefore change the address.
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// TODO: Remove above note when
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// https://github.com/tendermint/go-amino/issues/9
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// is resolved
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RegisterAmino(cdc)
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// TODO: Have amino provide a way to go from concrete struct to route directly.
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// Its currently a private API
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nameTable[reflect.TypeOf(ed25519.PubKeyEd25519{})] = ed25519.PubKeyAminoName
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nameTable[reflect.TypeOf(secp256k1.PubKeySecp256k1{})] = secp256k1.PubKeyAminoName
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nameTable[reflect.TypeOf(multisig.PubKeyMultisigThreshold{})] = multisig.PubKeyMultisigThresholdAminoRoute
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}
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// PubkeyAminoName returns the amino route of a pubkey
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// cdc is currently passed in, as eventually this will not be using
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// a package level codec.
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func PubkeyAminoName(cdc *amino.Codec, key crypto.PubKey) (string, bool) {
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route, found := nameTable[reflect.TypeOf(key)]
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return route, found
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}
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// RegisterAmino registers all crypto related types in the given (amino) codec.
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func RegisterAmino(cdc *amino.Codec) {
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// These are all written here instead of
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cdc.RegisterInterface((*crypto.PubKey)(nil), nil)
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cdc.RegisterConcrete(ed25519.PubKeyEd25519{},
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ed25519.PubKeyAminoName, nil)
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cdc.RegisterConcrete(secp256k1.PubKeySecp256k1{},
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secp256k1.PubKeyAminoName, nil)
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cdc.RegisterConcrete(multisig.PubKeyMultisigThreshold{},
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multisig.PubKeyMultisigThresholdAminoRoute, nil)
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cdc.RegisterInterface((*crypto.PrivKey)(nil), nil)
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cdc.RegisterConcrete(ed25519.PrivKeyEd25519{},
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ed25519.PrivKeyAminoName, nil)
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cdc.RegisterConcrete(secp256k1.PrivKeySecp256k1{},
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secp256k1.PrivKeyAminoName, nil)
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}
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// RegisterKeyType registers an external key type to allow decoding it from bytes
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func RegisterKeyType(o interface{}, name string) {
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cdc.RegisterConcrete(o, name, nil)
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nameTable[reflect.TypeOf(o)] = name
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}
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// PrivKeyFromBytes unmarshals private key bytes and returns a PrivKey
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func PrivKeyFromBytes(privKeyBytes []byte) (privKey crypto.PrivKey, err error) {
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err = cdc.UnmarshalBinaryBare(privKeyBytes, &privKey)
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return
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}
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// PubKeyFromBytes unmarshals public key bytes and returns a PubKey
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func PubKeyFromBytes(pubKeyBytes []byte) (pubKey crypto.PubKey, err error) {
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err = cdc.UnmarshalBinaryBare(pubKeyBytes, &pubKey)
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return
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}
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