solo/fido2/extensions/wallet.h
2018-12-16 16:19:40 -08:00

113 lines
2.8 KiB
C

/*
* Copyright (C) 2018 SoloKeys, Inc. <https://solokeys.com/>
*
* This file is part of Solo.
*
* Solo is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Solo is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Solo. If not, see <https://www.gnu.org/licenses/>
*
* This code is available under licenses for commercial use.
* Please contact SoloKeys for more information.
*/
#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;
typedef enum
{
WalletSign = 0x10,
WalletRegister = 0x11,
WalletPin = 0x12,
WalletReset= 0x13,
WalletVersion= 0x14,
WalletRng = 0x15,
} WalletOperation;
int16_t bridge_u2f_to_extensions(uint8_t * chal, uint8_t * appid, uint8_t klen, uint8_t * keyh);
// return 1 if request is a wallet request
int is_extension_request(uint8_t * req, int len);
void wallet_init();
#endif /* WALLET_H_ */