refactor as extensions

fido2/extensions/wallet.h

@@ -0,0 +1,87 @@
+/*
+ * wallet.h
+ *
+ *  Created on: Jul 7, 2018
+ *      Author: conor
+ */
+
+#ifndef WALLET_H_
+#define WALLET_H_
+
+#include <stdint.h>
+
+#define WALLET_MAX_BUFFER	(32 + 255)
+
+// Sign request
+// op: 					0x10
+// authType:			0x00 //sign?
+// reserved:			0x00 // mbedtls signature alg identifier
+// pinAuth:             data[16]
+// challenge-length:    1-255
+// challenge:			data[1-255]
+// keyID-length:		1-255
+// keyID:				data[1-255]
+
+// Resp: normal U2F auth response
+
+// Register request
+// op: 					0x11
+// formatType:			0x00 //sign?	[0x00: WIF, 0x01: raw]
+// keyType:				0x03 // mbedtls signature alg identifier
+// key-length:    		1-255
+// key:					data[1-255]
+
+
+// Resp: modded U2F auth response
+
+// PIN request
+// op: 					0x12
+// subcmd:				0x00	// Same as CTAP pin subcommands
+// reserved:			0x03 	// mbedtls signature alg identifier
+// publickey:    		data[64]
+// OR
+// pinAuth				data[64]
+// OR
+// pinHashEnc			data[64]
+// OR
+// newPinEnc			data[64]
+
+// key:					data[1-255]
+// keyID-length:		1-255
+// keyID:				data[1-255]
+
+// Resp: modded U2F auth response
+// Returns public key OR pinAuth
+
+// Only response to this challenge to prevent interference
+#define WALLET_TAG  "\x8C\x27\x90\xf6"
+
+#define WALLET_MIN_LENGTH   (4 + 4 + 16)
+
+#define WALLET_VERSION  "WALLET_V1.0"
+
+#define MAX_CHALLENGE_SIZE          229
+#define MAX_KEYID_SIZE              228
+
+#define MAX_PAYLOAD_SIZE            (255 - 16 - 4 - 4)
+
+typedef struct
+{
+    uint8_t operation;
+    uint8_t p1;
+    uint8_t p2;
+    uint8_t numArgs;
+    uint8_t tag[4];
+    uint8_t pinAuth[16];
+    uint8_t payload[MAX_PAYLOAD_SIZE];
+}__attribute__((packed)) wallet_request;
+
+
+int16_t bridge_u2f_to_wallet(uint8_t * chal, uint8_t * appid, uint8_t klen, uint8_t * keyh);
+
+// return 1 if request is a wallet request
+int is_wallet_device(uint8_t * req, int len);
+
+void wallet_init();
+
+#endif /* WALLET_H_ */