.\" Copyright (C) 2010 Romain Tartiere .\" .\" 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 3 of the License, 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 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 .\" .\" $Id$ .\" .Dd March 30, 2010 .Dt MIFARE_CLASSIC 3 .Os .\" _ _ .\" | \ | | __ _ _ __ ___ ___ .\" | \| |/ _` | '_ ` _ \ / _ \ .\" | |\ | (_| | | | | | | __/ .\" |_| \_|\__,_|_| |_| |_|\___| .\" .Sh NAME .Nm mifare_classic_connect , .Nm mifare_classic_disconnect , .Nm mifare_classic_authenticate , .Nm mifare_classic_read , .Nm mifare_classic_init_value , .Nm mifare_classic_read_value , .Nm mifare_classic_write , .Nm mifare_classic_increment , .Nm mifare_classic_decrement , .Nm mifare_classic_restore , .Nm mifare_classic_transfer , .Nm mifare_classic_get_trailer_block_permission , .Nm mifare_classic_get_data_block_permission , .Nm mifare_classic_format_sector , .Nm mifare_classic_trailer_block , .Nm mifare_classic_block_sector , .Nm mifare_classic_sector_first_block , .Nm mifare_classic_sector_block_count , .Nm mifare_classic_sector_last_block .Nd Mifare Classic Manipulation Functions .\" _ _ _ .\" | | (_) |__ _ __ __ _ _ __ _ _ .\" | | | | '_ \| '__/ _` | '__| | | | .\" | |___| | |_) | | | (_| | | | |_| | .\" |_____|_|_.__/|_| \__,_|_| \__, | .\" |___/ .Sh LIBRARY Mifare card manipulation library (libfreefare, \-lfreefare) .\" ____ _ .\" / ___| _ _ _ __ ___ _ __ ___(_)___ .\" \___ \| | | | '_ \ / _ \| '_ \/ __| / __| .\" ___) | |_| | | | | (_) | |_) \__ \ \__ \ .\" |____/ \__, |_| |_|\___/| .__/|___/_|___/ .\" |___/ |_| .Sh SYNOPSIS .In freefare.h .Ft int .Fn mifare_classic_connect "MifareTag tag" .Ft int .Fn mifare_classic_disconnect "MifareTag tag" .Ft int .Fn mifare_classic_authenticate "MifareTag tag" "const MifareClassicBlockNumber block" "const MifareClassicKey key" "const MifareClassicKeyType key_type" .Ft int .Fn mifare_classic_read "MifareTag tag" "const MifareClassicBlockNumber block" "MifareClassicBlock *data" .Ft int .Fn mifare_classic_init_value "MifareTag tag" "const MifareClassicBlockNumber block" "const int32_t value" "const MifareClassicBlockNumber adr" .Ft int .Fn mifare_classic_read_value "MifareTag tag" "const MifareClassicBlockNumber block" "int32_t *value" "MifareClassicBlockNumber *adr" .Ft int .Fn mifare_classic_write "MifareTag tag" "const MifareClassicBlockNumber block" "const MifareClassicBlock data" .Ft int .Fn mifare_classic_increment "MifareTag tag" "const MifareClassicBlockNumber block" "const uint32_t amount" .Ft int .Fn mifare_classic_decrement "MifareTag tag" "const MifareClassicBlockNumber block" "const uint32_t amount" .Ft int .Fn mifare_classic_restore "MifareTag tag" "const MifareClassicBlockNumber block" .Ft int .Fn mifare_classic_transfer "MifareTag tag" "const MifareClassicBlockNumber block" .Ft int .Fn mifare_classic_get_trailer_block_permission "MifareTag tag" "const MifareClassicBlockNumber block" "const uint16_t permission" "const MifareClassicKeyType key_type" .Ft int .Fn mifare_classic_get_data_block_permission "MifareTag tag" "const MifareClassicBlockNumber block" "const unsigned char permission" "const MifareClassicKeyType key_type" .Ft int .Fn mifare_classic_format_sector "MifareTag tag" "const MifareClassicSectorNumber sector" .Ft void .Fn mifare_classic_trailer_block "MifareClassicBlock *block" "const MifareClassicKey key_a" "const uint8_t ab_0" "const uint8_t ab_1" "const uint8_t ab_2" "const uint8_t ab_tb" "const uint8_t gpb" "const MifareClassicKey key_b" .Ft MifareClassicSectorNumber .Fn mifare_classic_block_sector "MifareClassicBlockNumber block" .Ft MifareClassicBlockNumber .Fn mifare_classic_sector_first_block "MifareClassicSectorNumber sector" .Ft size_t .Fn mifare_classic_sector_block_count "MifareClassicSectorNumber sector" .Ft MifareClassicBlockNumber .Fn mifare_classic_sector_last_block "MifareClassicSectorNumber sector" .\" ____ _ _ _ .\" | _ \ ___ ___ ___ _ __(_)_ __ | |_(_) ___ _ __ .\" | | | |/ _ \/ __|/ __| '__| | '_ \| __| |/ _ \| '_ \ .\" | |_| | __/\__ \ (__| | | | |_) | |_| | (_) | | | | .\" |____/ \___||___/\___|_| |_| .__/ \__|_|\___/|_| |_| .\" |_| .Sh DESCRIPTION The .Fn mifare_classic_* set of functions allow manipulation of both Mifare Classic 1k and Mifare Classic 4k cards. .Pp A given .Vt tag is activated using .Fn mifare_classic_connect , deactivation is performed with .Fn mifare_classic_disconnect . .Pp After a successful connection, an authentication for a .Vt block using a .Vt key of type .Vt key_type (either .Ar MFC_KEY_A or .Ar MFC_KEY_B ) using .Fn mifare_classic_authenticate is required for further operation. .Pp Once successfuly authenticated, .Vt data of a .Vt block can be read using .Fn mifare_classic_read and written using .Fn mifare_classic_write . .Pp Value-blocks can be easily accessed using the .Fn mifare_classic_read_value and .Fn mifare_classic_init_value functions. Additional functions are available for such .Vt blocks : .Fn mifare_classic_increment and .Fn mifare_classic_decrement increment or decrement the value of the provided .Vt block by .Vt amount and store the result in the target's internal data register. The value in this register can also be loaded with the value from another .Vt block using .Fn mifare_classic_restore . Writing back the value of the target's internal data register to a .Vt block is requested using .Fn mifare_classic_transfer . .Pp Permissions for a data .Vt block can be fetched using .Fn mifare_classic_get_data_block_permission . The access .Vt permission to be checkf for key .Vt key_type is one of .Ar MCAB_R , .Ar MCAB_W , .Ar MCAB_I or .Ar MCAB_D ; respectively for read, write, increment and decrement permissions. .Pp .Fn mifare_classic_get_trailer_block_permission acts like .Fn mifare_classic_get_data_block_permission but the available .Vt permissions are .Ar MCAB_READ_KEYA , .Ar MCAB_READ_KEYB , .Ar MCAB_READ_ACCESS_BITS , .Ar MCAB_WRITE_ACCESS_BITS , .Ar MCAB_READ_KEYB and .Ar MCAB_WRITE_KEYB . .Pp A whole sector can be reset to factory defaults using .Fn mifare_classic_format_sector . .Pp The .Fn mifare_classic_trailer_block is a convenience function for building a trailer block .Vt block given a A key .Vt key_a ; access bits for the blocks of the sector .Vt ab_0 , .Vt ab_1 and .Vt ab_2 ; and a B key .Vt key_b . .Pp The .Fn mifare_classic_block_sector , function returns the number of the sector holding .Va block . .Pp The .Fn mifare_classic_sector_first_block , .Fn mifare_classic_sector_block_count , .Fn mifare_classic_sector_last_block or the complement of the .Fn mifare_classic_block_sector function and return various block-level information about the provided .Va sector . .\" ____ _ _ .\" | _ \ ___| |_ _ _ _ __ _ __ __ ____ _| |_ _ ___ ___ .\" | |_) / _ \ __| | | | '__| '_ \ \ \ / / _` | | | | |/ _ \/ __| .\" | _ < __/ |_| |_| | | | | | | \ V / (_| | | |_| | __/\__ \ .\" |_| \_\___|\__|\__,_|_| |_| |_| \_/ \__,_|_|\__,_|\___||___/ .\" .Sh RETURN VALUES Unless stated otherwise, all functions return a value greater than or equal to .Va 0 on success or .Va -1 on failure. .\" ____ _ .\" / ___| ___ ___ __ _| |___ ___ .\" \___ \ / _ \/ _ \ / _` | / __|/ _ \ .\" ___) | __/ __/ | (_| | \__ \ (_) | .\" |____/ \___|\___| \__,_|_|___/\___/ .\" .Sh SEE ALSO .Xr freefare 3 , .Xr mad 3 .\" _ _ _ .\" / \ _ _| |_| |__ ___ _ __ ___ .\" / _ \| | | | __| '_ \ / _ \| '__/ __| .\" / ___ \ |_| | |_| | | | (_) | | \__ \ .\" /_/ \_\__,_|\__|_| |_|\___/|_| |___/ .\" .Sh AUTHORS .An Romain Tartiere Aq romain@blogreen.org .An Romuald Conty Aq romuald@libnfc.org