mirror of
https://github.com/trezor/trezor-firmware.git
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97 lines
2.0 KiB
C
97 lines
2.0 KiB
C
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// Copyright 2014 Google Inc. All rights reserved.
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//
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file or at
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// https://developers.google.com/open-source/licenses/bsd
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#ifndef __U2F_HID_H_INCLUDED__
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#define __U2F_HID_H_INCLUDED__
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef __NO_PRAGMA_PACK
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#pragma pack(push, 1)
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#endif
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// HID frame definition
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typedef struct {
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uint32_t cid;
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union {
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uint8_t type;
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struct {
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uint8_t cmd;
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uint8_t bcnth;
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uint8_t bcntl;
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uint8_t data[64 - 7];
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} init;
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struct {
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uint8_t seq;
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uint8_t data[64 - 5];
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} cont;
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};
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} U2FHID_FRAME;
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// HID frame accessors
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#define TYPE_MASK 0x80
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#define TYPE_INIT 0x80
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#define TYPE_CONT 0x00
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#define FRAME_TYPE(x) ((x).type & TYPE_MASK)
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#define FRAME_SEQ(x) ((x).cont.seq & ~TYPE_MASK)
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#define FRAME_CMD(x) ((x).init.cmd & ~TYPE_MASK)
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#define MSG_LEN(x) ((x).init.bcnth * 256u + (x).init.bcntl)
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// Commands
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#define U2FHID_PING (TYPE_INIT | 1)
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#define U2FHID_MSG (TYPE_INIT | 3)
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#define U2FHID_LOCK (TYPE_INIT | 4)
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#define U2FHID_INIT (TYPE_INIT | 6)
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#define U2FHID_WINK (TYPE_INIT | 8)
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#define U2FHID_SYNC (TYPE_INIT | 0x3c)
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#define U2FHID_ERROR (TYPE_INIT | 0x3f)
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// Errors
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#define ERR_NONE 0
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#define ERR_INVALID_CMD 1
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#define ERR_INVALID_PAR 2
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#define ERR_INVALID_LEN 3
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#define ERR_INVALID_SEQ 4
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#define ERR_MSG_TIMEOUT 5
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#define ERR_CHANNEL_BUSY 6
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#define ERR_LOCK_REQUIRED 10
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#define ERR_INVALID_CID 11
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#define ERR_OTHER 127
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// Init command parameters
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#define CID_BROADCAST -1
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#define INIT_NONCE_SIZE 8
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typedef struct {
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uint8_t nonce[INIT_NONCE_SIZE];
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uint32_t cid;
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uint8_t versionInterface;
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uint8_t versionMajor;
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uint8_t versionMinor;
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uint8_t versionBuild;
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uint8_t capFlags;
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} U2FHID_INIT_RESP;
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#define U2FHID_IF_VERSION 2
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#define CAPFLAG_WINK 0x01
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#define CAPFLAG_LOCK 0x02
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#ifndef __NO_PRAGMA_PACK
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#pragma pack(pop)
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif // __U2F_HID_H_INCLUDED__
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