Add Cardano currency support (#148)

protob/messages.proto

@@ -100,6 +100,21 @@ enum MessageType {
 	MessageType_DebugLinkMemoryWrite = 112 [(wire_debug_in) = true];
 	MessageType_DebugLinkFlashErase = 113 [(wire_debug_in) = true];
 
+
+	// Cardano
+	MessageType_CardanoSignMessage = 300 [(wire_in) = true];
+	MessageType_CardanoMessageSignature = 301 [(wire_out) = true];
+	MessageType_CardanoVerifyMessage = 302 [(wire_in) = true];
+	MessageType_CardanoSignTransaction = 303 [(wire_in) = true];
+	MessageType_CardanoTxRequest = 304 [(wire_out) = true];
+	MessageType_CardanoGetPublicKey = 305 [(wire_in) = true];
+	MessageType_CardanoPublicKey = 306 [(wire_out) = true];
+	MessageType_CardanoGetAddress = 307 [(wire_in) = true];
+	MessageType_CardanoAddress = 308 [(wire_out) = true];
+	MessageType_CardanoTxAck = 309 [(wire_in) = true];
+	MessageType_CardanoSignedTransaction = 310 [(wire_out) = true];
+	
+
 	// Lisk
 	MessageType_LiskGetAddress = 114 [(wire_in) = true];
 	MessageType_LiskAddress = 115 [(wire_out) = true];
@@ -1437,3 +1452,113 @@ message DebugLinkMemoryWrite {
 message DebugLinkFlashErase {
 	optional uint32 sector = 1;
 }
+
+/**
+ * Request: Ask device for Cardano address
+ * @next CardanoAddress
+ * @next Failure
+ */
+ message CardanoGetAddress {
+	repeated uint32 address_n = 1;		// BIP-32-style path to derive the key from master node
+	optional bool show_display = 2;		// optionally prompt for confirmation on trezor display
+}
+
+/**
+ * Request: Ask device for Cardano address
+ * @next CardanoAddress
+ * @next Failure
+ */
+ message CardanoAddress {
+	optional string address = 1;		// Base58 cardano address
+}
+
+/**
+ * Request: Ask device to sign Cardano message
+ * @next CardanoMessageSignature
+ * @next Failure
+ */
+message CardanoSignMessage {
+	repeated uint32 address_n = 1;					// BIP-32 path to derive the key from master node
+	optional bytes message = 2;					// message to be signed
+}
+
+/**
+ * Request: Ask device for public key corresponding to address_n path
+ * @next CardanoPublicKey
+ * @next Failure
+ */
+ message CardanoGetPublicKey {
+	repeated uint32 address_n = 1;				// BIP-32 path to derive the key from master node
+}
+
+/**
+ * Response: Contains public key derived from device private seed
+ * @prev CardanoGetPublicKey
+ */
+ message CardanoPublicKey {
+	optional string xpub = 1;				// Xpub key
+	optional HDNodeType node = 2;				// BIP-32 public node
+	optional string root_hd_passphrase = 3;			// Hd passphrase for root in hex format
+}
+
+/**
+ * Request: Ask device to verify Cardano message
+ * @next Success
+ * @next Failure
+ */
+message CardanoVerifyMessage {
+	optional bytes public_key = 1;				// Public key which was used to sign message
+	optional bytes signature = 2;				// signature to verify
+	optional bytes message = 3;				// message to verify
+}
+
+/**
+ * Response: Signed Cardano message
+ * @prev CardanoSignMessage
+ */
+message CardanoMessageSignature {
+	optional bytes public_key = 1; 				// public key which was used to sign mesage
+	optional bytes signature = 2;				// signature of the message
+}
+
+/**
+ * Request: Ask device to sign Cardano transaction
+ * @next CardanoSignedTransaction
+ * @next CardanoTxRequest
+ * @next Failure
+ */
+message CardanoSignTransaction {
+	repeated CardanoTxInputType inputs = 1;  		// inputs to be used in transaction
+	repeated CardanoTxOutputType outputs = 2;		// outputs to be used in transaction
+	optional uint32 transactions_count = 3; 		// transactions count
+}
+
+/**
+ * Response: Serialised signed cardano transaction if tx_index is not specified.
+ * 			 If tx_index is specified, trezor will wait for transaction
+ * @prev CardanoSignTransaction
+ * @next CardanoTxAck
+ */
+message CardanoTxRequest {
+	optional uint32 tx_index = 1;				// index of requested transaction
+	optional bytes tx_hash = 2;  				// hash of the signed transaction
+	optional bytes tx_body = 3;  				// serialised body of the signed transaction
+}
+
+/**
+ * Response: Serialised signed cardano transaction
+ * @prev CardanoSignTransaction
+ */
+message CardanoSignedTransaction {
+	optional bytes tx_hash = 1;				// hash of the signed transaction
+	optional bytes tx_body = 2;				// serialised body of the signed transaction
+}
+
+/**
+ * Request: Reported transaction data
+ * @prev CardanoTxRequest
+ * @next CardanoTxRequest
+ */
+ message CardanoTxAck {
+	optional bytes transaction = 1;
+}

protob/types.proto

@@ -511,3 +511,24 @@ message LiskMultisignatureType {
 	optional uint32 life_time = 2;
 	repeated string keys_group = 3;
 }
+
+/**
+ * Structure representing cardano transaction input
+ * @used_in CardanoSignTransacion
+ */
+message CardanoTxInputType {
+	repeated uint32 address_n = 1;				// BIP-32 path to derive the key from master node
+	optional bytes prev_hash = 2;				// hash of previous transaction output to spend by this input
+	optional uint32 prev_index = 3;				// index of previous output to spend
+	optional uint32 type = 4;				// input type, defaults to 0
+}
+
+/**
+ * Structure representing cardano transaction output
+ * @used_in CardanoSignTransacion
+ */
+message CardanoTxOutputType {
+	optional string address = 1;				// target coin address in Base58 encoding
+	repeated uint32 address_n = 2;				// BIP-32 path to derive the key from master node; has higher priority than "address"
+	optional uint64 amount = 3;				// amount to spend
+}