FromCmtProtoPublicKey converts a CMT's cmtprotocrypto.PublicKey into our own PubKey.

FromCmtPubKeyInterface converts CMT's cmtcrypto.PubKey to our own PubKey.

PubKeyFromProto converts a protobuf public key (in `cryptotypes.PubKey` format) to a JSON public key format (`cryptokeys.JSONPubkey`).

PubKeyToProto converts a JSON public key (in `cryptokeys.JSONPubkey` format) to its corresponding protobuf public key type.

RegisterCrypto registers all crypto dependency types with the provided Amino codec.

RegisterInterfaces registers the sdk.Tx interface.

ToCmtProtoPublicKey converts our own PubKey to Cmt's cmtprotocrypto.PublicKey.

ToCmtPubKeyInterface converts our own PubKey to CMT's cmtcrypto.PubKey.