mirror of
https://github.com/trezor/trezor-firmware.git
synced 2025-01-03 12:00:59 +00:00
u2f: replace U2F header with newer ones
Fix U2F constants, add more checks.
This commit is contained in:
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6d6e5a1696
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0b26c529ec
@ -42,7 +42,7 @@
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// About 1/2 Second according to values used in protect.c
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#define U2F_TIMEOUT (800000/2)
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#define U2F_OUT_PKT_BUFFER_LEN 128
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#define U2F_OUT_PKT_BUFFER_LEN 130
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// Initialise without a cid
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static uint32_t cid = 0;
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@ -100,8 +100,13 @@ uint32_t next_cid(void)
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return cid;
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}
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// https://fidoalliance.org/specs/fido-u2f-v1.2-ps-20170411/fido-u2f-hid-protocol-v1.2-ps-20170411.html#message--and-packet-structure
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// states the following:
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// With a packet size of 64 bytes (max for full-speed devices), this means that
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// the maximum message payload length is 64 - 7 + 128 * (64 - 5) = 7609 bytes.
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#define U2F_MAXIMUM_PAYLOAD_LENGTH 7609
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typedef struct {
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uint8_t buf[57+127*59];
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uint8_t buf[U2F_MAXIMUM_PAYLOAD_LENGTH];
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uint8_t *buf_ptr;
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uint32_t len;
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uint8_t seq;
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@ -282,7 +287,7 @@ void u2fhid_init(const U2FHID_FRAME *in)
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{
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const U2FHID_INIT_REQ *init_req = (const U2FHID_INIT_REQ *)&in->init.data;
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U2FHID_FRAME f;
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U2FHID_INIT_RESP resp;
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U2FHID_INIT_RESP resp = {0};
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debugLog(0, "", "u2fhid_init");
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@ -295,7 +300,7 @@ void u2fhid_init(const U2FHID_FRAME *in)
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f.cid = in->cid;
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f.init.cmd = U2FHID_INIT;
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f.init.bcnth = 0;
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f.init.bcntl = U2FHID_INIT_RESP_SIZE;
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f.init.bcntl = sizeof(resp);
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memcpy(resp.nonce, init_req->nonce, sizeof(init_req->nonce));
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resp.cid = in->cid == CID_BROADCAST ? next_cid() : in->cid;
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@ -363,6 +368,11 @@ void u2fhid_msg(const APDU *a, uint32_t len)
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void send_u2fhid_msg(const uint8_t cmd, const uint8_t *data, const uint32_t len)
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{
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if (len > U2F_MAXIMUM_PAYLOAD_LENGTH) {
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debugLog(0, "", "send_u2fhid_msg failed");
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return;
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}
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U2FHID_FRAME f;
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uint8_t *p = (uint8_t *)data;
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uint32_t l = len;
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@ -1,22 +1,11 @@
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/*
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Copyright (C) 2013-2015 Yubico AB
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1, or (at your option) any
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later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
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General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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// Common U2F raw message format header.
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// 2014-08-14 J Ehrensvard, Yubico, Inc.
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/**
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* Copyright FIDO Alliance, 2017
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*
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* Licensed under CC-BY:
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* https://creativecommons.org/licenses/by/4.0/legalcode
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*
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* Editor: Jakob Ehrensvard, Yubico, jakob@yubico.com
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*/
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#ifndef __U2F_H_INCLUDED__
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#define __U2F_H_INCLUDED__
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@ -31,8 +20,7 @@ typedef unsigned long int uint64_t;
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#endif
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#ifdef __cplusplus
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extern "C"
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{
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extern "C" {
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#endif
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// General constants
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@ -40,7 +28,7 @@ extern "C"
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#define U2F_EC_KEY_SIZE 32 // EC key size in bytes
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#define U2F_EC_POINT_SIZE ((U2F_EC_KEY_SIZE * 2) + 1) // Size of EC point
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#define U2F_MAX_KH_SIZE 128 // Max size of key handle
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#define U2F_MAX_ATT_CERT_SIZE 1024 // Max size of attestation certificate
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#define U2F_MAX_ATT_CERT_SIZE 2048 // Max size of attestation certificate
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#define U2F_MAX_EC_SIG_SIZE 72 // Max size of DER coded EC signature
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#define U2F_CTR_SIZE 4 // Size of counter field
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#define U2F_APPID_SIZE 32 // Size of application id
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@ -52,12 +40,11 @@ extern "C"
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#define U2F_POINT_UNCOMPRESSED 0x04 // Uncompressed point format
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typedef struct
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{
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typedef struct __attribute__((packed)) {
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uint8_t pointFormat; // Point type
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uint8_t x[U2F_EC_KEY_SIZE]; // X-value
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uint8_t y[U2F_EC_KEY_SIZE]; // Y-value
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} U2F_EC_POINT;
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} U2F_EC_POINT;
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// U2F native commands
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@ -66,28 +53,27 @@ extern "C"
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#define U2F_VERSION 0x03 // Read version string command
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#define U2F_VENDOR_FIRST 0x40 // First vendor defined command
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#define U2F_VENDOR_LAST 0x7f // Last vendor defined command
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#define U2F_VENDOR_LAST 0xbf // Last vendor defined command
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// U2F_CMD_REGISTER command defines
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#define U2F_REGISTER_ID 0x05 // Version 2 registration identifier
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#define U2F_REGISTER_HASH_ID 0x00 // Version 2 hash identintifier
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typedef struct
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{
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typedef struct __attribute__((packed)) {
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uint8_t chal[U2F_CHAL_SIZE]; // Challenge
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uint8_t appId[U2F_APPID_SIZE]; // Application id
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} U2F_REGISTER_REQ;
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} U2F_REGISTER_REQ;
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typedef struct
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{
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typedef struct __attribute__((packed)) {
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uint8_t registerId; // Registration identifier (U2F_REGISTER_ID_V2)
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U2F_EC_POINT pubKey; // Generated public key
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uint8_t keyHandleLen; // Length of key handle
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uint8_t keyHandleCertSig[U2F_MAX_KH_SIZE + // Key handle
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uint8_t keyHandleCertSig[
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U2F_MAX_KH_SIZE + // Key handle
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U2F_MAX_ATT_CERT_SIZE + // Attestation certificate
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U2F_MAX_EC_SIG_SIZE]; // Registration signature
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} U2F_REGISTER_RESP;
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} U2F_REGISTER_RESP;
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// U2F_CMD_AUTHENTICATE command defines
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@ -97,44 +83,28 @@ extern "C"
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#define U2F_AUTH_CHECK_ONLY 0x07 // Check only
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#define U2F_AUTH_FLAG_TUP 0x01 // Test of user presence set
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typedef struct
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{
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typedef struct __attribute__((packed)) {
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uint8_t chal[U2F_CHAL_SIZE]; // Challenge
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uint8_t appId[U2F_APPID_SIZE]; // Application id
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uint8_t keyHandleLen; // Length of key handle
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uint8_t keyHandle[U2F_MAX_KH_SIZE]; // Key handle
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} U2F_AUTHENTICATE_REQ;
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} U2F_AUTHENTICATE_REQ;
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typedef struct
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{
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typedef struct __attribute__((packed)) {
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uint8_t flags; // U2F_AUTH_FLAG_ values
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uint8_t ctr[U2F_CTR_SIZE]; // Counter field (big-endian)
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uint8_t sig[U2F_MAX_EC_SIG_SIZE]; // Signature
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} U2F_AUTHENTICATE_RESP;
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// Common raw message format (ISO7816-4:2005 mapping)
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typedef struct
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{
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uint8_t cla; // Class - reserved
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uint8_t ins; // U2F instruction
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uint8_t p1; // U2F parameter 1
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uint8_t p2; // U2F parameter 2
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uint8_t lc1; // Length field, set to zero
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uint8_t lc2; // Length field, MSB
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uint8_t lc3; // Length field, LSB
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uint8_t data[1]; // Data field
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} U2F_MSG;
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} U2F_AUTHENTICATE_RESP;
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// Command status responses
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#define U2F_SW_NO_ERROR 0x9000 // SW_NO_ERROR
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#define U2F_SW_WRONG_LENGTH 0x6700 // SW_WRONG_LENGTH
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#define U2F_SW_DATA_INVALID 0x6984 // SW_WRONG_DATA
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#define U2F_SW_WRONG_DATA 0x6A80 // SW_WRONG_DATA
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#define U2F_SW_CONDITIONS_NOT_SATISFIED 0x6985 // SW_CONDITIONS_NOT_SATISFIED
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#define U2F_SW_WRONG_DATA 0x6a80 // SW_WRONG_DATA
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#define U2F_SW_INS_NOT_SUPPORTED 0x6d00 // SW_INS_NOT_SUPPORTED
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#define U2F_SW_CLA_NOT_SUPPORTED 0x6e00 // SW_CLA_NOT_SUPPORTED
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#define U2F_SW_COMMAND_NOT_ALLOWED 0x6986 // SW_COMMAND_NOT_ALLOWED
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#define U2F_SW_INS_NOT_SUPPORTED 0x6D00 // SW_INS_NOT_SUPPORTED
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#define U2F_SW_CLA_NOT_SUPPORTED 0x6E00 // SW_CLA_NOT_SUPPORTED
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#ifdef __cplusplus
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}
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@ -1,22 +1,11 @@
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/*
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Copyright (C) 2013-2015 Yubico AB
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1, or (at your option) any
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later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
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General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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// Common U2F HID transport header.
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// 2014-08-21 J Ehrensvard, Yubico, Inc.
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/**
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* Copyright FIDO Alliance, 2017
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*
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* Licensed under CC-BY:
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* https://creativecommons.org/licenses/by/4.0/legalcode
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*
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* Editor: Jakob Ehrensvard, Yubico, jakob@yubico.com
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*/
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#ifndef __U2FHID_H_INCLUDED__
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#define __U2FHID_H_INCLUDED__
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@ -31,8 +20,7 @@ typedef unsigned long int uint64_t;
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#endif
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#ifdef __cplusplus
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extern "C"
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{
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extern "C" {
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#endif
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// Size of HID reports
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@ -47,30 +35,26 @@ extern "C"
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#define TYPE_INIT 0x80 // Initial frame identifier
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#define TYPE_CONT 0x00 // Continuation frame identifier
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typedef struct
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{
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typedef struct __attribute__((packed)) {
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uint32_t cid; // Channel identifier
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union
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{
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union __attribute__((packed)) {
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uint8_t type; // Frame type - b7 defines type
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struct
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{
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struct __attribute__((packed)) {
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uint8_t cmd; // Command - b7 set
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uint8_t bcnth; // Message byte count - high part
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uint8_t bcntl; // Message byte count - low part
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uint8_t data[HID_RPT_SIZE - 7]; // Data payload
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} init;
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struct
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{
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struct __attribute__((packed)) {
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uint8_t seq; // Sequence number - b7 cleared
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uint8_t data[HID_RPT_SIZE - 5]; // Data payload
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} cont;
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};
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} U2FHID_FRAME;
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} U2FHID_FRAME;
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#define FRAME_TYPE(f) ((f).type & TYPE_MASK)
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#define FRAME_CMD(f) ((f).init.cmd & ~TYPE_MASK)
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#define MSG_LEN(f) (((f).init.bcnth << 8) + (f).init.bcntl)
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#define MSG_LEN(f) ((f).init.bcnth*256 + (f).init.bcntl)
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#define FRAME_SEQ(f) ((f).cont.seq & ~TYPE_MASK)
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// HID usage- and usage-page definitions
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@ -83,7 +67,6 @@ extern "C"
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// General constants
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#define U2FHID_IF_VERSION 2 // Current interface implementation version
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#define U2FHID_FRAME_TIMEOUT 500 // Default frame timeout in ms
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#define U2FHID_TRANS_TIMEOUT 3000 // Default message timeout in ms
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// U2FHID native commands
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@ -93,6 +76,7 @@ extern "C"
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#define U2FHID_LOCK (TYPE_INIT | 0x04) // Send lock channel command
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#define U2FHID_INIT (TYPE_INIT | 0x06) // Channel initialization
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#define U2FHID_WINK (TYPE_INIT | 0x08) // Send device identification wink
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#define U2FHID_SYNC (TYPE_INIT | 0x3c) // Protocol resync command
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#define U2FHID_ERROR (TYPE_INIT | 0x3f) // Error response
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#define U2FHID_VENDOR_FIRST (TYPE_INIT | 0x40) // First vendor defined command
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@ -104,13 +88,11 @@ extern "C"
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#define CAPFLAG_WINK 0x01 // Device supports WINK command
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#define CAPFLAG_LOCK 0x02 // Device supports LOCK command
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typedef struct
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{
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typedef struct __attribute__((packed)) {
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uint8_t nonce[INIT_NONCE_SIZE]; // Client application nonce
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} U2FHID_INIT_REQ;
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} U2FHID_INIT_REQ;
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typedef struct
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{
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typedef struct __attribute__((packed)) {
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uint8_t nonce[INIT_NONCE_SIZE]; // Client application nonce
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uint32_t cid; // Channel identifier
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uint8_t versionInterface; // Interface version
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@ -118,9 +100,17 @@ extern "C"
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uint8_t versionMinor; // Minor version number
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uint8_t versionBuild; // Build version number
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uint8_t capFlags; // Capabilities flags
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} U2FHID_INIT_RESP;
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} U2FHID_INIT_RESP;
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#define U2FHID_INIT_RESP_SIZE 17
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// U2FHID_SYNC command defines
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typedef struct __attribute__((packed)) {
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uint8_t nonce; // Client application nonce
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} U2FHID_SYNC_REQ;
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typedef struct __attribute__((packed)) {
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uint8_t nonce; // Client application nonce
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} U2FHID_SYNC_RESP;
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// Low-level error codes. Return as negatives.
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@ -132,7 +122,7 @@ extern "C"
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#define ERR_MSG_TIMEOUT 0x05 // Message has timed out
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#define ERR_CHANNEL_BUSY 0x06 // Channel busy
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#define ERR_LOCK_REQUIRED 0x0a // Command requires channel lock
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#define ERR_INVALID_CID 0x0b // Command not allowed on this cid
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#define ERR_INVALID_CID 0x0b // Message on CID 0
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#define ERR_OTHER 0x7f // Other unspecified error
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#ifdef __cplusplus
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