cvs.zerfleddert.de Git - proxmark3-svn/blob - client/cmdhffido.c

   1 //-----------------------------------------------------------------------------
   2 // Copyright (C) 2018 Merlok
   3 //
   4 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
   5 // at your option, any later version. See the LICENSE.txt file for the text of
   6 // the license.
   7 //-----------------------------------------------------------------------------
   8 // High frequency MIFARE  Plus commands
   9 //-----------------------------------------------------------------------------
  10 //
  11 //  Documentation here:
  12 //
  13 // FIDO Alliance specifications
  14 // https://fidoalliance.org/download/
  15 // FIDO NFC Protocol Specification v1.0
  16 // https://fidoalliance.org/specs/fido-u2f-v1.2-ps-20170411/fido-u2f-nfc-protocol-v1.2-ps-20170411.html
  17 // FIDO U2F Raw Message Formats
  18 // https://fidoalliance.org/specs/fido-u2f-v1.2-ps-20170411/fido-u2f-raw-message-formats-v1.2-ps-20170411.html
  19 //-----------------------------------------------------------------------------
  20
  21
  22 #include "cmdhffido.h"
  23
  24 #include <inttypes.h>
  25 #include <string.h>
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <ctype.h>
  29 #include <unistd.h>
  30 #include <jansson.h>
  31 #include <mbedtls/x509_crt.h>
  32 #include <mbedtls/x509.h>
  33 #include <mbedtls/pk.h>
  34 #include "comms.h"
  35 #include "cmdmain.h"
  36 #include "util.h"
  37 #include "ui.h"
  38 #include "proxmark3.h"
  39 #include "mifare.h"
  40 #include "emv/emvcore.h"
  41 #include "emv/emvjson.h"
  42 #include "emv/dump.h"
  43 #include "cliparser/cliparser.h"
  44 #include "crypto/asn1utils.h"
  45 #include "crypto/libpcrypto.h"
  46 #include "fido/cbortools.h"
  47 #include "fido/fidocore.h"
  48 #include "fido/cose.h"
  49
  50 static int CmdHelp(const char *Cmd);
  51
  52 int CmdHFFidoInfo(const char *cmd) {
  53
  54         if (cmd && strlen(cmd) > 0)
  55                 PrintAndLog("WARNING: command don't have any parameters.\n");
  56
  57         // info about 14a part
  58         CmdHF14AInfo("");
  59
  60         // FIDO info
  61         PrintAndLog("--------------------------------------------");
  62         SetAPDULogging(false);
  63
  64         uint8_t buf[APDU_RES_LEN] = {0};
  65         size_t len = 0;
  66         uint16_t sw = 0;
  67         int res = FIDOSelect(true, true, buf, sizeof(buf), &len, &sw);
  68
  69         if (res) {
  70                 DropField();
  71                 return res;
  72         }
  73
  74         if (sw != 0x9000) {
  75                 if (sw)
  76                         PrintAndLog("Not a FIDO card! APDU response: %04x - %s", sw, GetAPDUCodeDescription(sw >> 8, sw & 0xff));
  77                 else
  78                         PrintAndLog("APDU exchange error. Card returns 0x0000.");
  79
  80                 DropField();
  81                 return 0;
  82         }
  83
  84         if (!strncmp((char *)buf, "U2F_V2", 7)) {
  85                 if (!strncmp((char *)buf, "FIDO_2_0", 8)) {
  86                         PrintAndLog("FIDO2 authenricator detected. Version: %.*s", len, buf);
  87                 } else {
  88                         PrintAndLog("FIDO authenricator detected (not standard U2F).");
  89                         PrintAndLog("Non U2F authenticator version:");
  90                         dump_buffer((const unsigned char *)buf, len, NULL, 0);
  91                 }
  92         } else {
  93                 PrintAndLog("FIDO U2F authenricator detected. Version: %.*s", len, buf);
  94         }
  95
  96         res = FIDO2GetInfo(buf, sizeof(buf), &len, &sw);
  97         DropField();
  98         if (res) {
  99                 return res;
 100         }
 101         if (sw != 0x9000) {
 102                 PrintAndLog("FIDO2 version not exists (%04x - %s).", sw, GetAPDUCodeDescription(sw >> 8, sw & 0xff));
 103
 104                 return 0;
 105         }
 106
 107         if(buf[0]) {
 108                 PrintAndLog("FIDO2 ger version error: %d - %s", buf[0], fido2GetCmdErrorDescription(buf[0]));
 109                 return 0;
 110         }
 111
 112         if (len > 1) {
 113 //              if (false) {
 114 //                      PrintAndLog("FIDO2 version: (len=%d)", len);
 115 //                      dump_buffer((const unsigned char *)buf, len, NULL, 0);
 116 //              }
 117
 118                 PrintAndLog("FIDO2 version CBOR decoded:");
 119                 TinyCborPrintFIDOPackage(fido2CmdGetInfo, true, &buf[1], len - 1);
 120         } else {
 121                 PrintAndLog("FIDO2 version length error");
 122         }
 123
 124         return 0;
 125 }
 126
 127 json_t *OpenJson(int paramnum, char *fname, void* argtable[], bool *err) {
 128         json_t *root = NULL;
 129         json_error_t error;
 130         *err = false;
 131
 132         uint8_t jsonname[250] ={0};
 133         char *cjsonname = (char *)jsonname;
 134         int jsonnamelen = 0;
 135
 136         // CLIGetStrWithReturn(paramnum, jsonname, &jsonnamelen);
 137         if (CLIParamStrToBuf(arg_get_str(paramnum), jsonname, sizeof(jsonname), &jsonnamelen))  {
 138                 CLIParserFree();
 139                 return NULL;
 140         }
 141
 142         // current path + file name
 143         if (!strstr(cjsonname, ".json"))
 144                 strcat(cjsonname, ".json");
 145
 146         if (jsonnamelen) {
 147                 strcpy(fname, get_my_executable_directory());
 148                 strcat(fname, cjsonname);
 149                 if (access(fname, F_OK) != -1) {
 150                         root = json_load_file(fname, 0, &error);
 151                         if (!root) {
 152                                 PrintAndLog("ERROR: json error on line %d: %s", error.line, error.text);
 153                                 *err = true;
 154                                 return NULL;
 155                         }
 156
 157                         if (!json_is_object(root)) {
 158                                 PrintAndLog("ERROR: Invalid json format. root must be an object.");
 159                                 json_decref(root);
 160                                 *err = true;
 161                                 return NULL;
 162                         }
 163
 164                 } else {
 165                         root = json_object();
 166                 }
 167         }
 168         return root;
 169 }
 170
 171 int CmdHFFidoRegister(const char *cmd) {
 172         uint8_t data[64] = {0};
 173         int chlen = 0;
 174         uint8_t cdata[250] = {0};
 175         int applen = 0;
 176         uint8_t adata[250] = {0};
 177         json_t *root = NULL;
 178
 179         CLIParserInit("hf fido reg",
 180                 "Initiate a U2F token registration. Needs two 32-byte hash number. \nchallenge parameter (32b) and application parameter (32b).",
 181                 "Usage:\n\thf fido reg -> execute command with 2 parameters, filled 0x00\n"
 182                         "\thf fido reg 000102030405060708090a0b0c0d0e0f000102030405060708090a0b0c0d0e0f 000102030405060708090a0b0c0d0e0f000102030405060708090a0b0c0d0e0f -> execute command with parameters"
 183                         "\thf fido reg -p s0 s1 -> execute command with plain parameters");
 184
 185         void* argtable[] = {
 186                 arg_param_begin,
 187                 arg_lit0("aA",  "apdu",     "show APDU reqests and responses"),
 188                 arg_litn("vV",  "verbose",  0, 2, "show technical data. vv - show full certificates data"),
 189                 arg_lit0("pP",  "plain",    "send plain ASCII to challenge and application parameters instead of HEX"),
 190                 arg_lit0("tT",  "tlv",      "Show DER certificate contents in TLV representation"),
 191                 arg_str0("jJ",  "json",         "fido.json", "JSON input / output file name for parameters."),
 192                 arg_str0(NULL,  NULL,       "<HEX/ASCII challenge parameter (32b HEX/1..16 chars)>", NULL),
 193                 arg_str0(NULL,  NULL,       "<HEX/ASCII application parameter (32b HEX/1..16 chars)>", NULL),
 194                 arg_param_end
 195         };
 196         CLIExecWithReturn(cmd, argtable, true);
 197
 198         bool APDULogging = arg_get_lit(1);
 199         bool verbose = arg_get_lit(2);
 200         bool verbose2 = arg_get_lit(2) > 1;
 201         bool paramsPlain = arg_get_lit(3);
 202         bool showDERTLV = arg_get_lit(4);
 203
 204         char fname[250] = {0};
 205         bool err;
 206         root = OpenJson(5, fname, argtable, &err);
 207         if(err)
 208                 return 1;
 209         if (root) {
 210                 size_t jlen;
 211                 JsonLoadBufAsHex(root, "$.ChallengeParam", data, 32, &jlen);
 212                 JsonLoadBufAsHex(root, "$.ApplicationParam", &data[32], 32, &jlen);
 213         }
 214
 215         if (paramsPlain) {
 216                 memset(cdata, 0x00, 32);
 217                 CLIGetStrWithReturn(6, cdata, &chlen);
 218                 if (chlen && chlen > 16) {
 219                         PrintAndLog("ERROR: challenge parameter length in ASCII mode must be less than 16 chars instead of: %d", chlen);
 220                         return 1;
 221                 }
 222         } else {
 223                 CLIGetHexWithReturn(6, cdata, &chlen);
 224                 if (chlen && chlen != 32) {
 225                         PrintAndLog("ERROR: challenge parameter length must be 32 bytes only.");
 226                         return 1;
 227                 }
 228         }
 229         if (chlen)
 230                 memmove(data, cdata, 32);
 231
 232
 233         if (paramsPlain) {
 234                 memset(adata, 0x00, 32);
 235                 CLIGetStrWithReturn(7, adata, &applen);
 236                 if (applen && applen > 16) {
 237                         PrintAndLog("ERROR: application parameter length in ASCII mode must be less than 16 chars instead of: %d", applen);
 238                         return 1;
 239                 }
 240         } else {
 241                 CLIGetHexWithReturn(7, adata, &applen);
 242                 if (applen && applen != 32) {
 243                         PrintAndLog("ERROR: application parameter length must be 32 bytes only.");
 244                         return 1;
 245                 }
 246         }
 247         if (applen)
 248                 memmove(&data[32], adata, 32);
 249
 250         CLIParserFree();
 251
 252         SetAPDULogging(APDULogging);
 253
 254         // challenge parameter [32 bytes] - The challenge parameter is the SHA-256 hash of the Client Data, a stringified JSON data structure that the FIDO Client prepares
 255         // application parameter [32 bytes] - The application parameter is the SHA-256 hash of the UTF-8 encoding of the application identity
 256
 257         uint8_t buf[2048] = {0};
 258         size_t len = 0;
 259         uint16_t sw = 0;
 260
 261         DropField();
 262         int res = FIDOSelect(true, true, buf, sizeof(buf), &len, &sw);
 263
 264         if (res) {
 265                 PrintAndLog("Can't select authenticator. res=%x. Exit...", res);
 266                 DropField();
 267                 return res;
 268         }
 269
 270         if (sw != 0x9000) {
 271                 PrintAndLog("Can't select FIDO application. APDU response status: %04x - %s", sw, GetAPDUCodeDescription(sw >> 8, sw & 0xff));
 272                 DropField();
 273                 return 2;
 274         }
 275
 276         res = FIDORegister(data, buf,  sizeof(buf), &len, &sw);
 277         DropField();
 278         if (res) {
 279                 PrintAndLog("Can't execute register command. res=%x. Exit...", res);
 280                 return res;
 281         }
 282
 283         if (sw != 0x9000) {
 284                 PrintAndLog("ERROR execute register command. APDU response status: %04x - %s", sw, GetAPDUCodeDescription(sw >> 8, sw & 0xff));
 285                 return 3;
 286         }
 287
 288         PrintAndLog("");
 289         if (APDULogging)
 290                 PrintAndLog("---------------------------------------------------------------");
 291         PrintAndLog("data len: %d", len);
 292         if (verbose2) {
 293                 PrintAndLog("--------------data----------------------");
 294                 dump_buffer((const unsigned char *)buf, len, NULL, 0);
 295                 PrintAndLog("--------------data----------------------");
 296         }
 297
 298         if (buf[0] != 0x05) {
 299                 PrintAndLog("ERROR: First byte must be 0x05, but it %2x", buf[0]);
 300                 return 5;
 301         }
 302         PrintAndLog("User public key: %s", sprint_hex(&buf[1], 65));
 303
 304         uint8_t keyHandleLen = buf[66];
 305         PrintAndLog("Key handle[%d]: %s", keyHandleLen, sprint_hex(&buf[67], keyHandleLen));
 306
 307         int derp = 67 + keyHandleLen;
 308         int derLen = (buf[derp + 2] << 8) + buf[derp + 3] + 4;
 309         if (verbose2) {
 310                 PrintAndLog("DER certificate[%d]:\n------------------DER-------------------", derLen);
 311                 dump_buffer_simple((const unsigned char *)&buf[derp], derLen, NULL);
 312                 PrintAndLog("\n----------------DER---------------------");
 313         } else {
 314                 if (verbose)
 315                         PrintAndLog("------------------DER-------------------");
 316                 PrintAndLog("DER certificate[%d]: %s...", derLen, sprint_hex(&buf[derp], 20));
 317         }
 318
 319         // check and print DER certificate
 320         uint8_t public_key[65] = {0};
 321
 322         // print DER certificate in TLV view
 323         if (showDERTLV) {
 324                 PrintAndLog("----------------DER TLV-----------------");
 325                 asn1_print(&buf[derp], derLen, "  ");
 326                 PrintAndLog("----------------DER TLV-----------------");
 327         }
 328
 329     FIDOCheckDERAndGetKey(&buf[derp], derLen, verbose, public_key, sizeof(public_key));
 330
 331         // get hash
 332         int hashp = 1 + 65 + 1 + keyHandleLen + derLen;
 333         PrintAndLog("Hash[%d]: %s", len - hashp, sprint_hex(&buf[hashp], len - hashp));
 334
 335         // check ANSI X9.62 format ECDSA signature (on P-256)
 336         uint8_t rval[300] = {0};
 337         uint8_t sval[300] = {0};
 338         res = ecdsa_asn1_get_signature(&buf[hashp], len - hashp, rval, sval);
 339         if (!res) {
 340                 if (verbose) {
 341                         PrintAndLog("  r: %s", sprint_hex(rval, 32));
 342                         PrintAndLog("  s: %s", sprint_hex(sval, 32));
 343                 }
 344
 345                 uint8_t xbuf[4096] = {0};
 346                 size_t xbuflen = 0;
 347                 res = FillBuffer(xbuf, sizeof(xbuf), &xbuflen,
 348                         "\x00", 1,
 349                         &data[32], 32,           // application parameter
 350                         &data[0], 32,            // challenge parameter
 351                         &buf[67], keyHandleLen,  // keyHandle
 352                         &buf[1], 65,             // user public key
 353                         NULL, 0);
 354                 //PrintAndLog("--xbuf(%d)[%d]: %s", res, xbuflen, sprint_hex(xbuf, xbuflen));
 355                 res = ecdsa_signature_verify(public_key, xbuf, xbuflen, &buf[hashp], len - hashp);
 356                 if (res) {
 357                         if (res == -0x4e00) {
 358                                 PrintAndLog("Signature is NOT VALID.");
 359                         } else {
 360                                 PrintAndLog("Other signature check error: %x %s", (res<0)?-res:res, ecdsa_get_error(res));
 361                         }
 362                 } else {
 363                         PrintAndLog("Signature is OK.");
 364                 }
 365
 366         } else {
 367                 PrintAndLog("Invalid signature. res=%d.", res);
 368         }
 369
 370         PrintAndLog("\nauth command: ");
 371         printf("hf fido auth %s%s", paramsPlain?"-p ":"", sprint_hex_inrow(&buf[67], keyHandleLen));
 372         if(chlen || applen)
 373                 printf(" %s", paramsPlain?(char *)cdata:sprint_hex_inrow(cdata, 32));
 374         if(applen)
 375                 printf(" %s", paramsPlain?(char *)adata:sprint_hex_inrow(adata, 32));
 376         printf("\n");
 377
 378         if (root) {
 379                 JsonSaveBufAsHex(root, "ChallengeParam", data, 32);
 380                 JsonSaveBufAsHex(root, "ApplicationParam", &data[32], 32);
 381                 JsonSaveBufAsHexCompact(root, "PublicKey", &buf[1], 65);
 382                 JsonSaveInt(root, "KeyHandleLen", keyHandleLen);
 383                 JsonSaveBufAsHexCompact(root, "KeyHandle", &buf[67], keyHandleLen);
 384                 JsonSaveBufAsHexCompact(root, "DER", &buf[67 + keyHandleLen], derLen);
 385
 386                 res = json_dump_file(root, fname, JSON_INDENT(2));
 387                 if (res) {
 388                         PrintAndLog("ERROR: can't save the file: %s", fname);
 389                         return 200;
 390                 }
 391                 PrintAndLog("File `%s` saved.", fname);
 392
 393                 // free json object
 394                 json_decref(root);
 395         }
 396
 397         return 0;
 398 };
 399
 400 int CmdHFFidoAuthenticate(const char *cmd) {
 401         uint8_t data[512] = {0};
 402         uint8_t hdata[250] = {0};
 403         bool public_key_loaded = false;
 404         uint8_t public_key[65] = {0};
 405         int hdatalen = 0;
 406         uint8_t keyHandleLen = 0;
 407         json_t *root = NULL;
 408
 409         CLIParserInit("hf fido auth",
 410                 "Initiate a U2F token authentication. Needs key handle and two 32-byte hash number. \nkey handle(var 0..255), challenge parameter (32b) and application parameter (32b).",
 411                 "Usage:\n\thf fido auth 000102030405060708090a0b0c0d0e0f000102030405060708090a0b0c0d0e0f -> execute command with 2 parameters, filled 0x00 and key handle\n"
 412                         "\thf fido auth 000102030405060708090a0b0c0d0e0f000102030405060708090a0b0c0d0e0f000102030405060708090a0b0c0d0e0f000102030405060708090a0b0c0d0e0f "
 413                                 "000102030405060708090a0b0c0d0e0f000102030405060708090a0b0c0d0e0f 000102030405060708090a0b0c0d0e0f000102030405060708090a0b0c0d0e0f -> execute command with parameters");
 414
 415         void* argtable[] = {
 416                 arg_param_begin,
 417                 arg_lit0("aA",  "apdu",     "show APDU reqests and responses"),
 418                 arg_lit0("vV",  "verbose",  "show technical data"),
 419                 arg_lit0("pP",  "plain",    "send plain ASCII to challenge and application parameters instead of HEX"),
 420                 arg_rem("default mode:",    "dont-enforce-user-presence-and-sign"),
 421                 arg_lit0("uU",  "user",     "mode: enforce-user-presence-and-sign"),
 422                 arg_lit0("cC",  "check",    "mode: check-only"),
 423                 arg_str0("jJ",  "json",         "fido.json", "JSON input / output file name for parameters."),
 424                 arg_str0("kK",  "key",          "public key to verify signature", NULL),
 425                 arg_str0(NULL,  NULL,       "<HEX key handle (var 0..255b)>", NULL),
 426                 arg_str0(NULL,  NULL,       "<HEX/ASCII challenge parameter (32b HEX/1..16 chars)>", NULL),
 427                 arg_str0(NULL,  NULL,       "<HEX/ASCII application parameter (32b HEX/1..16 chars)>", NULL),
 428                 arg_param_end
 429         };
 430         CLIExecWithReturn(cmd, argtable, true);
 431
 432         bool APDULogging = arg_get_lit(1);
 433         bool verbose = arg_get_lit(2);
 434         bool paramsPlain = arg_get_lit(3);
 435         uint8_t controlByte = 0x08;
 436         if (arg_get_lit(5))
 437                 controlByte = 0x03;
 438         if (arg_get_lit(6))
 439                 controlByte = 0x07;
 440
 441         char fname[250] = {0};
 442         bool err;
 443         root = OpenJson(7, fname, argtable, &err);
 444         if(err)
 445                 return 1;
 446         if (root) {
 447                 size_t jlen;
 448                 JsonLoadBufAsHex(root, "$.ChallengeParam", data, 32, &jlen);
 449                 JsonLoadBufAsHex(root, "$.ApplicationParam", &data[32], 32, &jlen);
 450                 JsonLoadBufAsHex(root, "$.KeyHandle", &data[65], 512 - 67, &jlen);
 451                 keyHandleLen = jlen & 0xff;
 452                 data[64] = keyHandleLen;
 453                 JsonLoadBufAsHex(root, "$.PublicKey", public_key, 65, &jlen);
 454                 public_key_loaded = (jlen > 0);
 455         }
 456
 457         // public key
 458         CLIGetHexWithReturn(8, hdata, &hdatalen);
 459         if (hdatalen && hdatalen != 65) {
 460                 PrintAndLog("ERROR: public key length must be 65 bytes only.");
 461                 return 1;
 462         }
 463         if (hdatalen) {
 464                 memmove(public_key, hdata, hdatalen);
 465                 public_key_loaded = true;
 466         }
 467
 468         CLIGetHexWithReturn(9, hdata, &hdatalen);
 469         if (hdatalen > 255) {
 470                 PrintAndLog("ERROR: application parameter length must be less than 255.");
 471                 return 1;
 472         }
 473         if (hdatalen) {
 474                 keyHandleLen = hdatalen;
 475                 data[64] = keyHandleLen;
 476                 memmove(&data[65], hdata, keyHandleLen);
 477         }
 478
 479         if (paramsPlain) {
 480                 memset(hdata, 0x00, 32);
 481                 CLIGetStrWithReturn(9, hdata, &hdatalen);
 482                 if (hdatalen && hdatalen > 16) {
 483                         PrintAndLog("ERROR: challenge parameter length in ASCII mode must be less than 16 chars instead of: %d", hdatalen);
 484                         return 1;
 485                 }
 486         } else {
 487                 CLIGetHexWithReturn(10, hdata, &hdatalen);
 488                 if (hdatalen && hdatalen != 32) {
 489                         PrintAndLog("ERROR: challenge parameter length must be 32 bytes only.");
 490                         return 1;
 491                 }
 492         }
 493         if (hdatalen)
 494                 memmove(data, hdata, 32);
 495
 496         if (paramsPlain) {
 497                 memset(hdata, 0x00, 32);
 498                 CLIGetStrWithReturn(11, hdata, &hdatalen);
 499                 if (hdatalen && hdatalen > 16) {
 500                         PrintAndLog("ERROR: application parameter length in ASCII mode must be less than 16 chars instead of: %d", hdatalen);
 501                         return 1;
 502                 }
 503         } else {
 504                 CLIGetHexWithReturn(10, hdata, &hdatalen);
 505                 if (hdatalen && hdatalen != 32) {
 506                         PrintAndLog("ERROR: application parameter length must be 32 bytes only.");
 507                         return 1;
 508                 }
 509         }
 510         if (hdatalen)
 511                 memmove(&data[32], hdata, 32);
 512
 513         CLIParserFree();
 514
 515         SetAPDULogging(APDULogging);
 516
 517         // (in parameter) conrtol byte 0x07 - check only, 0x03 - user presense + cign. 0x08 - sign only
 518         // challenge parameter [32 bytes]
 519         // application parameter [32 bytes]
 520         // key handle length [1b] = N
 521         // key handle [N]
 522
 523         uint8_t datalen = 32 + 32 + 1 + keyHandleLen;
 524
 525         uint8_t buf[2048] = {0};
 526         size_t len = 0;
 527         uint16_t sw = 0;
 528
 529         DropField();
 530         int res = FIDOSelect(true, true, buf, sizeof(buf), &len, &sw);
 531
 532         if (res) {
 533                 PrintAndLog("Can't select authenticator. res=%x. Exit...", res);
 534                 DropField();
 535                 return res;
 536         }
 537
 538         if (sw != 0x9000) {
 539                 PrintAndLog("Can't select FIDO application. APDU response status: %04x - %s", sw, GetAPDUCodeDescription(sw >> 8, sw & 0xff));
 540                 DropField();
 541                 return 2;
 542         }
 543
 544         res = FIDOAuthentication(data, datalen, controlByte,  buf,  sizeof(buf), &len, &sw);
 545         DropField();
 546         if (res) {
 547                 PrintAndLog("Can't execute authentication command. res=%x. Exit...", res);
 548                 return res;
 549         }
 550
 551         if (sw != 0x9000) {
 552                 PrintAndLog("ERROR execute authentication command. APDU response status: %04x - %s", sw, GetAPDUCodeDescription(sw >> 8, sw & 0xff));
 553                 return 3;
 554         }
 555
 556         PrintAndLog("---------------------------------------------------------------");
 557         PrintAndLog("User presence: %s", (buf[0]?"verified":"not verified"));
 558         uint32_t cntr =  (uint32_t)bytes_to_num(&buf[1], 4);
 559         PrintAndLog("Counter: %d", cntr);
 560         PrintAndLog("Hash[%d]: %s", len - 5, sprint_hex(&buf[5], len - 5));
 561
 562         // check ANSI X9.62 format ECDSA signature (on P-256)
 563         uint8_t rval[300] = {0};
 564         uint8_t sval[300] = {0};
 565         res = ecdsa_asn1_get_signature(&buf[5], len - 5, rval, sval);
 566         if (!res) {
 567                 if (verbose) {
 568                         PrintAndLog("  r: %s", sprint_hex(rval, 32));
 569                         PrintAndLog("  s: %s", sprint_hex(sval, 32));
 570                 }
 571                 if (public_key_loaded) {
 572                         uint8_t xbuf[4096] = {0};
 573                         size_t xbuflen = 0;
 574                         res = FillBuffer(xbuf, sizeof(xbuf), &xbuflen,
 575                                 &data[32], 32, // application parameter
 576                                 &buf[0], 1,    // user presence
 577                                 &buf[1], 4,    // counter
 578                                 data, 32,      // challenge parameter
 579                                 NULL, 0);
 580                         //PrintAndLog("--xbuf(%d)[%d]: %s", res, xbuflen, sprint_hex(xbuf, xbuflen));
 581                         res = ecdsa_signature_verify(public_key, xbuf, xbuflen, &buf[5], len - 5);
 582                         if (res) {
 583                                 if (res == -0x4e00) {
 584                                         PrintAndLog("Signature is NOT VALID.");
 585                                 } else {
 586                                         PrintAndLog("Other signature check error: %x %s", (res<0)?-res:res, ecdsa_get_error(res));
 587                                 }
 588                         } else {
 589                                 PrintAndLog("Signature is OK.");
 590                         }
 591                 } else {
 592                         PrintAndLog("No public key provided. can't check signature.");
 593                 }
 594         } else {
 595                 PrintAndLog("Invalid signature. res=%d.", res);
 596         }
 597
 598         if (root) {
 599                 JsonSaveBufAsHex(root, "ChallengeParam", data, 32);
 600                 JsonSaveBufAsHex(root, "ApplicationParam", &data[32], 32);
 601                 JsonSaveInt(root, "KeyHandleLen", keyHandleLen);
 602                 JsonSaveBufAsHexCompact(root, "KeyHandle", &data[65], keyHandleLen);
 603                 JsonSaveInt(root, "Counter", cntr);
 604
 605                 res = json_dump_file(root, fname, JSON_INDENT(2));
 606                 if (res) {
 607                         PrintAndLog("ERROR: can't save the file: %s", fname);
 608                         return 200;
 609                 }
 610                 PrintAndLog("File `%s` saved.", fname);
 611
 612                 // free json object
 613                 json_decref(root);
 614         }
 615         return 0;
 616 };
 617
 618 void CheckSlash(char *fileName) {
 619         if ((fileName[strlen(fileName) - 1] != '/') &&
 620                 (fileName[strlen(fileName) - 1] != '\\'))
 621                 strcat(fileName, "/");
 622 }
 623
 624 int GetExistsFileNameJson(char *prefixDir, char *reqestedFileName, char *fileName) {
 625         fileName[0] = 0x00;
 626         strcpy(fileName, get_my_executable_directory());
 627         CheckSlash(fileName);
 628
 629         strcat(fileName, prefixDir);
 630         CheckSlash(fileName);
 631
 632         strcat(fileName, reqestedFileName);
 633         if (!strstr(fileName, ".json"))
 634                 strcat(fileName, ".json");
 635
 636         if (access(fileName, F_OK) < 0) {
 637                 strcpy(fileName, get_my_executable_directory());
 638                 CheckSlash(fileName);
 639
 640                 strcat(fileName, reqestedFileName);
 641                 if (!strstr(fileName, ".json"))
 642                         strcat(fileName, ".json");
 643
 644                 if (access(fileName, F_OK) < 0) {
 645                         return 1; // file not found
 646                 }
 647         }
 648         return 0;
 649 }
 650
 651 int CmdHFFido2MakeCredential(const char *cmd) {
 652         json_error_t error;
 653         json_t *root = NULL;
 654         char fname[300] = {0};
 655
 656         CLIParserInit("hf fido make",
 657                 "Execute a FIDO2 Make Credentional command. Needs json file with parameters. Sample file `fido2.json`. File can be placed in proxmark directory or in `proxmark/fido` directory.",
 658                 "Usage:\n\thf fido make -> execute command default parameters file `fido2.json`\n"
 659                         "\thf fido make test.json -> execute command with parameters file `text.json`");
 660
 661         void* argtable[] = {
 662                 arg_param_begin,
 663                 arg_lit0("aA",  "apdu",     "show APDU reqests and responses"),
 664                 arg_litn("vV",  "verbose",  0, 2, "show technical data. vv - show full certificates data"),
 665                 arg_lit0("tT",  "tlv",      "Show DER certificate contents in TLV representation"),
 666                 arg_lit0("cC",  "cbor",     "show CBOR decoded data"),
 667                 arg_str0(NULL,  NULL,           "<json file name>", "JSON input / output file name for parameters. Default `fido2.json`"),
 668                 arg_param_end
 669         };
 670         CLIExecWithReturn(cmd, argtable, true);
 671
 672         bool APDULogging = arg_get_lit(1);
 673         bool verbose = arg_get_lit(2);
 674         bool verbose2 = arg_get_lit(2) > 1;
 675         bool showDERTLV = arg_get_lit(3);
 676         bool showCBOR = arg_get_lit(4);
 677
 678         uint8_t jsonname[250] ={0};
 679         char *cjsonname = (char *)jsonname;
 680         int jsonnamelen = 0;
 681         CLIGetStrWithReturn(5, jsonname, &jsonnamelen);
 682
 683         if (!jsonnamelen) {
 684                 strcat(cjsonname, "fido2");
 685                 jsonnamelen = strlen(cjsonname);
 686         }
 687
 688         CLIParserFree();
 689
 690         SetAPDULogging(APDULogging);
 691
 692         int res = GetExistsFileNameJson("fido", cjsonname, fname);
 693         if(res) {
 694                 PrintAndLog("ERROR: Can't found the json file.");
 695                 return res;
 696         }
 697         PrintAndLog("fname: %s\n", fname);
 698         root = json_load_file(fname, 0, &error);
 699         if (!root) {
 700                 PrintAndLog("ERROR: json error on line %d: %s", error.line, error.text);
 701                 return 1;
 702         }
 703
 704         uint8_t data[2048] = {0};
 705         size_t datalen = 0;
 706         uint8_t buf[2048] = {0};
 707         size_t len = 0;
 708         uint16_t sw = 0;
 709
 710         DropField();
 711         res = FIDOSelect(true, true, buf, sizeof(buf), &len, &sw);
 712
 713         if (res) {
 714                 PrintAndLog("Can't select authenticator. res=%x. Exit...", res);
 715                 DropField();
 716                 return res;
 717         }
 718
 719         if (sw != 0x9000) {
 720                 PrintAndLog("Can't select FIDO application. APDU response status: %04x - %s", sw, GetAPDUCodeDescription(sw >> 8, sw & 0xff));
 721                 DropField();
 722                 return 2;
 723         }
 724
 725         res = FIDO2CreateMakeCredentionalReq(root, data, sizeof(data), &datalen);
 726         if (res)
 727                 return res;
 728
 729         if (showCBOR) {
 730                 PrintAndLog("CBOR make credentional request:");
 731                 PrintAndLog("---------------- CBOR ------------------");
 732                 TinyCborPrintFIDOPackage(fido2CmdMakeCredential, false, data, datalen);
 733                 PrintAndLog("---------------- CBOR ------------------");
 734         }
 735
 736         res = FIDO2MakeCredential(data, datalen, buf,  sizeof(buf), &len, &sw);
 737         DropField();
 738         if (res) {
 739                 PrintAndLog("Can't execute make credential command. res=%x. Exit...", res);
 740                 return res;
 741         }
 742
 743         if (sw != 0x9000) {
 744                 PrintAndLog("ERROR execute make credential command. APDU response status: %04x - %s", sw, GetAPDUCodeDescription(sw >> 8, sw & 0xff));
 745                 return 3;
 746         }
 747
 748         if(buf[0]) {
 749                 PrintAndLog("FIDO2 make credential error: %d - %s", buf[0], fido2GetCmdErrorDescription(buf[0]));
 750                 return 0;
 751         }
 752
 753         PrintAndLog("MakeCredential result (%d b) OK.", len);
 754         if (showCBOR) {
 755                 PrintAndLog("CBOR make credentional response:");
 756                 PrintAndLog("---------------- CBOR ------------------");
 757                 TinyCborPrintFIDOPackage(fido2CmdMakeCredential, true, &buf[1], len - 1);
 758                 PrintAndLog("---------------- CBOR ------------------");
 759         }
 760
 761         // parse returned cbor
 762         FIDO2MakeCredentionalParseRes(root, &buf[1], len - 1, verbose, verbose2, showCBOR, showDERTLV);
 763
 764         if (root) {
 765                 res = json_dump_file(root, fname, JSON_INDENT(2));
 766                 if (res) {
 767                         PrintAndLog("ERROR: can't save the file: %s", fname);
 768                         return 200;
 769                 }
 770                 PrintAndLog("File `%s` saved.", fname);
 771         }
 772
 773         json_decref(root);
 774
 775         return 0;
 776 };
 777
 778 int CmdHFFido2GetAssertion(const char *cmd) {
 779         json_error_t error;
 780         json_t *root = NULL;
 781         char fname[300] = {0};
 782
 783         CLIParserInit("hf fido assert",
 784                 "Execute a FIDO2 Get Assertion command. Needs json file with parameters. Sample file `fido2.json`. File can be placed in proxmark directory or in `proxmark/fido` directory.",
 785                 "Usage:\n\thf fido assert -> execute command default parameters file `fido2.json`\n"
 786                         "\thf fido assert test.json -l -> execute command with parameters file `text.json` and add to request CredentialId");
 787
 788         void* argtable[] = {
 789                 arg_param_begin,
 790                 arg_lit0("aA",  "apdu",     "show APDU reqests and responses"),
 791                 arg_litn("vV",  "verbose",  0, 2, "show technical data. vv - show full certificates data"),
 792                 arg_lit0("cC",  "cbor",     "show CBOR decoded data"),
 793                 arg_lit0("lL",  "list",     "add CredentialId from json to allowList. Needs if `rk` option is `false` (authenticator don't store credential to its memory)"),
 794                 arg_str0(NULL,  NULL,           "<json file name>", "JSON input / output file name for parameters. Default `fido2.json`"),
 795                 arg_param_end
 796         };
 797         CLIExecWithReturn(cmd, argtable, true);
 798
 799         bool APDULogging = arg_get_lit(1);
 800         bool verbose = arg_get_lit(2);
 801         bool verbose2 = arg_get_lit(2) > 1;
 802         bool showCBOR = arg_get_lit(3);
 803         bool createAllowList = arg_get_lit(4);
 804
 805         uint8_t jsonname[250] ={0};
 806         char *cjsonname = (char *)jsonname;
 807         int jsonnamelen = 0;
 808         CLIGetStrWithReturn(5, jsonname, &jsonnamelen);
 809
 810         if (!jsonnamelen) {
 811                 strcat(cjsonname, "fido2");
 812                 jsonnamelen = strlen(cjsonname);
 813         }
 814
 815         CLIParserFree();
 816
 817         SetAPDULogging(APDULogging);
 818
 819         int res = GetExistsFileNameJson("fido", "fido2", fname);
 820         if(res) {
 821                 PrintAndLog("ERROR: Can't found the json file.");
 822                 return res;
 823         }
 824         PrintAndLog("fname: %s\n", fname);
 825         root = json_load_file(fname, 0, &error);
 826         if (!root) {
 827                 PrintAndLog("ERROR: json error on line %d: %s", error.line, error.text);
 828                 return 1;
 829         }
 830
 831         uint8_t data[2048] = {0};
 832         size_t datalen = 0;
 833         uint8_t buf[2048] = {0};
 834         size_t len = 0;
 835         uint16_t sw = 0;
 836
 837         DropField();
 838         res = FIDOSelect(true, true, buf, sizeof(buf), &len, &sw);
 839
 840         if (res) {
 841                 PrintAndLog("Can't select authenticator. res=%x. Exit...", res);
 842                 DropField();
 843                 return res;
 844         }
 845
 846         if (sw != 0x9000) {
 847                 PrintAndLog("Can't select FIDO application. APDU response status: %04x - %s", sw, GetAPDUCodeDescription(sw >> 8, sw & 0xff));
 848                 DropField();
 849                 return 2;
 850         }
 851
 852         res = FIDO2CreateGetAssertionReq(root, data, sizeof(data), &datalen, createAllowList);
 853         if (res)
 854                 return res;
 855
 856         if (showCBOR) {
 857                 PrintAndLog("CBOR get assertion request:");
 858                 PrintAndLog("---------------- CBOR ------------------");
 859                 TinyCborPrintFIDOPackage(fido2CmdGetAssertion, false, data, datalen);
 860                 PrintAndLog("---------------- CBOR ------------------");
 861         }
 862
 863         res = FIDO2GetAssertion(data, datalen, buf,  sizeof(buf), &len, &sw);
 864         DropField();
 865         if (res) {
 866                 PrintAndLog("Can't execute get assertion command. res=%x. Exit...", res);
 867                 return res;
 868         }
 869
 870         if (sw != 0x9000) {
 871                 PrintAndLog("ERROR execute get assertion command. APDU response status: %04x - %s", sw, GetAPDUCodeDescription(sw >> 8, sw & 0xff));
 872                 return 3;
 873         }
 874
 875         if(buf[0]) {
 876                 PrintAndLog("FIDO2 get assertion error: %d - %s", buf[0], fido2GetCmdErrorDescription(buf[0]));
 877                 return 0;
 878         }
 879
 880         PrintAndLog("GetAssertion result (%d b) OK.", len);
 881         if (showCBOR) {
 882                 PrintAndLog("CBOR get assertion response:");
 883                 PrintAndLog("---------------- CBOR ------------------");
 884                 TinyCborPrintFIDOPackage(fido2CmdGetAssertion, true, &buf[1], len - 1);
 885                 PrintAndLog("---------------- CBOR ------------------");
 886         }
 887
 888         // parse returned cbor
 889         FIDO2GetAssertionParseRes(root, &buf[1], len - 1, verbose, verbose2, showCBOR);
 890
 891         if (root) {
 892                 res = json_dump_file(root, fname, JSON_INDENT(2));
 893                 if (res) {
 894                         PrintAndLog("ERROR: can't save the file: %s", fname);
 895                         return 200;
 896                 }
 897                 PrintAndLog("File `%s` saved.", fname);
 898         }
 899
 900         json_decref(root);
 901
 902         return 0;
 903 };
 904
 905 static command_t CommandTable[] =
 906 {
 907   {"help",             CmdHelp,                                 1, "This help."},
 908   {"info",             CmdHFFidoInfo,                   0, "Info about FIDO tag."},
 909   {"reg",                          CmdHFFidoRegister,           0, "FIDO U2F Registration Message."},
 910   {"auth",             CmdHFFidoAuthenticate,   0, "FIDO U2F Authentication Message."},
 911   {"make",             CmdHFFido2MakeCredential,        0, "FIDO2 MakeCredential command."},
 912   {"assert",           CmdHFFido2GetAssertion,          0, "FIDO2 GetAssertion command."},
 913   {NULL,               NULL,                                    0, NULL}
 914 };
 915
 916 int CmdHFFido(const char *Cmd) {
 917         (void)WaitForResponseTimeout(CMD_ACK,NULL,100);
 918         CmdsParse(CommandTable, Cmd);
 919         return 0;
 920 }
 921
 922 int CmdHelp(const char *Cmd) {
 923   CmdsHelp(CommandTable);
 924   return 0;
 925 }