144 lines
4.5 KiB
C
144 lines
4.5 KiB
C
/*
|
|
Copyright (C) 2013-2015 Yubico AB
|
|
|
|
This program is free software; you can redistribute it and/or modify it
|
|
under the terms of the GNU Lesser General Public License as published by
|
|
the Free Software Foundation; either version 2.1, or (at your option) any
|
|
later version.
|
|
|
|
This program 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 Lesser
|
|
General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public License
|
|
along with this program; if not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
// Common U2F raw message format header.
|
|
// 2014-08-14 J Ehrensvard, Yubico, Inc.
|
|
|
|
#ifndef __U2F_H_INCLUDED__
|
|
#define __U2F_H_INCLUDED__
|
|
|
|
#ifdef _MSC_VER // Windows
|
|
typedef unsigned char uint8_t;
|
|
typedef unsigned short uint16_t;
|
|
typedef unsigned int uint32_t;
|
|
typedef unsigned long int uint64_t;
|
|
#else
|
|
#include <stdint.h>
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
extern "C"
|
|
{
|
|
#endif
|
|
|
|
// General constants
|
|
|
|
#define U2F_EC_KEY_SIZE 32 // EC key size in bytes
|
|
#define U2F_EC_POINT_SIZE ((U2F_EC_KEY_SIZE * 2) + 1) // Size of EC point
|
|
#define U2F_MAX_KH_SIZE 128 // Max size of key handle
|
|
#define U2F_MAX_ATT_CERT_SIZE 1024 // Max size of attestation certificate
|
|
#define U2F_MAX_EC_SIG_SIZE 72 // Max size of DER coded EC signature
|
|
#define U2F_CTR_SIZE 4 // Size of counter field
|
|
#define U2F_APPID_SIZE 32 // Size of application id
|
|
#define U2F_CHAL_SIZE 32 // Size of challenge
|
|
|
|
#define ENC_SIZE(x) ((x + 7) & 0xfff8)
|
|
|
|
// EC (uncompressed) point
|
|
|
|
#define U2F_POINT_UNCOMPRESSED 0x04 // Uncompressed point format
|
|
|
|
typedef struct
|
|
{
|
|
uint8_t pointFormat; // Point type
|
|
uint8_t x[U2F_EC_KEY_SIZE]; // X-value
|
|
uint8_t y[U2F_EC_KEY_SIZE]; // Y-value
|
|
} U2F_EC_POINT;
|
|
|
|
// U2F native commands
|
|
|
|
#define U2F_REGISTER 0x01 // Registration command
|
|
#define U2F_AUTHENTICATE 0x02 // Authenticate/sign command
|
|
#define U2F_VERSION 0x03 // Read version string command
|
|
|
|
#define U2F_VENDOR_FIRST 0x40 // First vendor defined command
|
|
#define U2F_VENDOR_LAST 0x7f // Last vendor defined command
|
|
|
|
// U2F_CMD_REGISTER command defines
|
|
|
|
#define U2F_REGISTER_ID 0x05 // Version 2 registration identifier
|
|
#define U2F_REGISTER_HASH_ID 0x00 // Version 2 hash identintifier
|
|
|
|
typedef struct
|
|
{
|
|
uint8_t chal[U2F_CHAL_SIZE]; // Challenge
|
|
uint8_t appId[U2F_APPID_SIZE]; // Application id
|
|
} U2F_REGISTER_REQ;
|
|
|
|
typedef struct
|
|
{
|
|
uint8_t registerId; // Registration identifier (U2F_REGISTER_ID_V2)
|
|
U2F_EC_POINT pubKey; // Generated public key
|
|
uint8_t keyHandleLen; // Length of key handle
|
|
uint8_t keyHandleCertSig[U2F_MAX_KH_SIZE + // Key handle
|
|
U2F_MAX_ATT_CERT_SIZE + // Attestation certificate
|
|
U2F_MAX_EC_SIG_SIZE]; // Registration signature
|
|
} U2F_REGISTER_RESP;
|
|
|
|
// U2F_CMD_AUTHENTICATE command defines
|
|
|
|
// Authentication control byte
|
|
|
|
#define U2F_AUTH_ENFORCE 0x03 // Enforce user presence and sign
|
|
#define U2F_AUTH_CHECK_ONLY 0x07 // Check only
|
|
#define U2F_AUTH_FLAG_TUP 0x01 // Test of user presence set
|
|
|
|
typedef struct
|
|
{
|
|
uint8_t chal[U2F_CHAL_SIZE]; // Challenge
|
|
uint8_t appId[U2F_APPID_SIZE]; // Application id
|
|
uint8_t keyHandleLen; // Length of key handle
|
|
uint8_t keyHandle[U2F_MAX_KH_SIZE]; // Key handle
|
|
} U2F_AUTHENTICATE_REQ;
|
|
|
|
typedef struct
|
|
{
|
|
uint8_t flags; // U2F_AUTH_FLAG_ values
|
|
uint8_t ctr[U2F_CTR_SIZE]; // Counter field (big-endian)
|
|
uint8_t sig[U2F_MAX_EC_SIG_SIZE]; // Signature
|
|
} U2F_AUTHENTICATE_RESP;
|
|
|
|
// Common raw message format (ISO7816-4:2005 mapping)
|
|
|
|
typedef struct
|
|
{
|
|
uint8_t cla; // Class - reserved
|
|
uint8_t ins; // U2F instruction
|
|
uint8_t p1; // U2F parameter 1
|
|
uint8_t p2; // U2F parameter 2
|
|
uint8_t lc1; // Length field, set to zero
|
|
uint8_t lc2; // Length field, MSB
|
|
uint8_t lc3; // Length field, LSB
|
|
uint8_t data[1]; // Data field
|
|
} U2F_MSG;
|
|
|
|
// Command status responses
|
|
|
|
#define U2F_SW_NO_ERROR 0x9000 // SW_NO_ERROR
|
|
#define U2F_SW_WRONG_LENGTH 0x6700 // SW_WRONG_LENGTH
|
|
#define U2F_SW_DATA_INVALID 0x6984 // SW_WRONG_DATA
|
|
#define U2F_SW_CONDITIONS_NOT_SATISFIED 0x6985 // SW_CONDITIONS_NOT_SATISFIED
|
|
#define U2F_SW_WRONG_DATA 0x6a80 // SW_WRONG_DATA
|
|
#define U2F_SW_INS_NOT_SUPPORTED 0x6d00 // SW_INS_NOT_SUPPORTED
|
|
#define U2F_SW_CLA_NOT_SUPPORTED 0x6e00 // SW_CLA_NOT_SUPPORTED
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif // __U2F_H_INCLUDED__
|