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https://github.com/RfidResearchGroup/proxmark3.git
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data crypto - now also can du AES256
This commit is contained in:
iceman1001
parent
0dc80263e8
commit
ca6dbc5251
2 changed files with 54 additions and 27 deletions
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@ -3,6 +3,7 @@ All notable changes to this project will be documented in this file.
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This project uses the changelog in accordance with [keepchangelog](http://keepachangelog.com/). Please use this to write notable changes, which is not the same as git commit log...
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## [unreleased][unreleased]
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- Changed `data crypto` - now also handles AES-256 (@iceman1001)
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- Changed `hf mfdes info` - add recognition of Swissbit iShield Key Mifare (@ah01)
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- Changed `hf mf info` - add detection for unknown backdoor keys and for some backdoor variants (@doegox)
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- Changed `mqtt` commnands - now honors preference settings (@iceman1001)
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@ -3527,8 +3527,8 @@ static int CmdAtrLookup(const char *Cmd) {
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static int CmdCryptography(const char *Cmd) {
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CLIParserContext *ctx;
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CLIParserInit(&ctx, "data crypto",
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"Encrypt data, right here, right now. Or decrypt.",
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"Supply data, key, IV (needed for des MAC or aes), and cryptography action.\n"
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"This command lets you encrypt or decrypt data using DES/3DES/AES.\n"
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"Supply data, key, IV (needed for des MAC or aes), and cryptography action.\n",
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"To calculate a MAC for FMCOS, supply challenge as IV, data as data, and session/line protection key as key.\n"
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"To calculate a MAC for FeliCa, supply first RC as IV, BLE+data as data and session key as key.\n"
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"data crypto -d 04D6850E06AABB80 -k FFFFFFFFFFFFFFFF --iv 9EA0401A00000000 --des -> Calculate a MAC for FMCOS chip. The result should be ED3A0133\n"
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@ -3544,76 +3544,97 @@ static int CmdCryptography(const char *Cmd) {
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arg_param_end
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};
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CLIExecWithReturn(ctx, Cmd, argtable, false);
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uint8_t dati[250] = {0};
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uint8_t dato[250] = {0};
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int datilen = 0;
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CLIGetHexWithReturn(ctx, 1, dati, &datilen);
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uint8_t key[25] = {0};
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uint8_t key[33] = {0};
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int keylen = 0;
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CLIGetHexWithReturn(ctx, 2, key, &keylen);
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int type = 0;
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if (arg_get_lit(ctx, 3)) type ^= 8;
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if (arg_get_lit(ctx, 4)) type ^= 4;
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if (arg_get_lit(ctx, 5)) type ^= 2;
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uint8_t type = 0;
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if (arg_get_lit(ctx, 3)) {
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type ^= 0x08;
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}
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if (arg_get_lit(ctx, 4)) {
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type ^= 0x04;
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}
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if (arg_get_lit(ctx, 5)) {
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type ^= 0x02;
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}
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uint8_t iv[250] = {0};
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int ivlen = 0;
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CLIGetHexWithReturn(ctx, 6, iv, &ivlen);
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CLIParserFree(ctx);
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// Do data length check
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if ((type & 0x4) >> 2) { // Use AES(0) or DES(1)?
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if ((type & 0x04) == 0x04) { // Use AES(0) or DES(1)?
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if (datilen % 8 != 0) {
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PrintAndLogEx(ERR, "<data> length must be a multiple of 8. Got %d", datilen);
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return PM3_EINVARG;
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}
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if (keylen != 8 && keylen != 16 && keylen != 24) {
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PrintAndLogEx(ERR, "<key> must be 8, 16 or 24 bytes. Got %d", keylen);
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if (keylen != 8 && keylen != 16 && keylen != 24 && keylen != 32) {
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PrintAndLogEx(ERR, "<key> must be 8, 16, 24, 32 bytes. Got %d", keylen);
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return PM3_EINVARG;
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}
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} else {
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if (datilen % 16 != 0 && ((type & 0x2) >> 1 == 0)) {
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if (datilen % 16 != 0 && ((type & 0x02) == 0)) {
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PrintAndLogEx(ERR, "<data> length must be a multiple of 16. Got %d", datilen);
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return PM3_EINVARG;
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}
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if (keylen != 16) {
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PrintAndLogEx(ERR, "<key> must be 16 bytes. Got %d", keylen);
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if (keylen != 16 && keylen != 32) {
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PrintAndLogEx(ERR, "<key> must be 16 or 32 bytes. Got %d", keylen);
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return PM3_EINVARG;
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}
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}
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// Encrypt(0) or decrypt(1)?
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if ((type & 0x8) >> 3) {
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if ((type & 0x08) == 0x08) {
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if ((type & 0x4) >> 2) { // AES or DES?
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if ((type & 0x04) == 0x04) { // AES or DES?
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if (keylen > 8) {
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PrintAndLogEx(INFO, "Called 3DES decrypt");
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des3_decrypt(dato, dati, key, keylen / 8);
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PrintAndLogEx(INFO, "3DES decrypt... " _YELLOW_("%s"), sprint_hex_inrow(dato, datilen));
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} else {
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PrintAndLogEx(INFO, "Called DES decrypt");
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if (ivlen == 0) {
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// If there's an IV, use CBC
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des_decrypt_ecb(dato, dati, datilen, key);
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PrintAndLogEx(INFO, "DES ECB decrypt... " _YELLOW_("%s"), sprint_hex_inrow(dato, datilen));
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} else {
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des_decrypt_cbc(dato, dati, datilen, key, iv);
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PrintAndLogEx(INFO, "DES CBC decrypt... " _YELLOW_("%s"), sprint_hex_inrow(dato, datilen));
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}
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}
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} else {
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PrintAndLogEx(INFO, "Called AES decrypt");
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aes_decode(iv, key, dati, dato, datilen);
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}
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} else {
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if (type & 0x4) { // AES or DES?
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if (type & 0x02) { // If we will calculate a MAC
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if (keylen == 32) {
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aes256_decode(iv, key, dati, dato, datilen);
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PrintAndLogEx(INFO, "AES-256 decrypt... " _YELLOW_("%s"), sprint_hex_inrow(dato, datilen));
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} else {
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aes_decode(iv, key, dati, dato, datilen);
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PrintAndLogEx(INFO, "AES-128 decrypt... " _YELLOW_("%s"), sprint_hex_inrow(dato, datilen));
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}
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}
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} else {
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if ((type & 0x04) == 0x04) { // AES or DES?
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if ((type & 0x02) == 0x02) { // If we will calculate a MAC
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/*PrintAndLogEx(INFO, "Called FeliCa MAC");
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// For DES all I know useful is the felica and fudan MAC algorithm.This is just des-cbc, but felica needs it in its way.
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for (int i = 0; i < datilen; i+=8){ // For all 8 byte sequences
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@ -3637,37 +3658,42 @@ static int CmdCryptography(const char *Cmd) {
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} else {
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if (keylen > 8) {
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PrintAndLogEx(INFO, "Called 3DES encrypt keysize: %i", keylen / 8);
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des3_encrypt(dato, dati, key, keylen / 8);
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PrintAndLogEx(INFO, "3DES encrypt keysize ( %d )... " _YELLOW_("%s"), (keylen / 8), sprint_hex_inrow(dato, datilen));
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} else {
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PrintAndLogEx(INFO, "Called DES encrypt");
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if (ivlen == 0) {
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// If there's an IV, use ECB
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des_encrypt_ecb(dato, dati, datilen, key);
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PrintAndLogEx(INFO, "DES ECB encrypt... " _YELLOW_("%s"), sprint_hex_inrow(dato, datilen));
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} else {
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des_encrypt_cbc(dato, dati, datilen, key, iv);
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char pad[250];
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memset(pad, ' ', 4 + 8 + (datilen - 8) * 3);
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pad[8 + (datilen - 8) * 3] = 0; // Make a padding to insert FMCOS macing algorithm guide
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PrintAndLogEx(INFO, "%sVV VV VV VV FMCOS MAC", pad);
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PrintAndLogEx(INFO, "DES CBC encrypt... " _YELLOW_("%s"), sprint_hex_inrow(dato, datilen));
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}
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}
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}
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} else {
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if (type & 0x02) {
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PrintAndLogEx(INFO, "Called AES CMAC");
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if ((type & 0x02) == 0x02) {
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// If we will calculate a MAC
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aes_cmac8(iv, key, dati, dato, datilen);
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PrintAndLogEx(INFO, "AES CMAC... " _YELLOW_("%s"), sprint_hex_inrow(dato, datilen));
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} else {
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if (keylen == 32) {
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aes256_encode(iv, key, dati, dato, datilen);
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PrintAndLogEx(INFO, "AES-256 encrypt... " _YELLOW_("%s"), sprint_hex_inrow(dato, datilen));
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} else {
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PrintAndLogEx(INFO, "Called AES encrypt");
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aes_encode(iv, key, dati, dato, datilen);
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PrintAndLogEx(INFO, "AES-128 encrypt... " _YELLOW_("%s"), sprint_hex_inrow(dato, datilen));
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}
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}
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}
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PrintAndLogEx(SUCCESS, "Result: %s", sprint_hex(dato, datilen));
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}
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return PM3_SUCCESS;
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}
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