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MIFARE_CLASSIC(3) Library Functions Manual MIFARE_CLASSIC(3) NAME mifare_classic_connect, mifare_classic_disconnect, mifare_classic_authenticate, mifare_classic_read, mifare_classic_init_value, mifare_classic_read_value, mifare_classic_write, mifare_classic_increment, mifare_classic_decrement, mifare_classic_restore, mifare_classic_transfer, mifare_classic_get_trailer_block_permission, mifare_classic_get_data_block_permission, mifare_classic_format_sector, mifare_classic_trailer_block, mifare_classic_block_sector, mifare_classic_sector_first_block, mifare_classic_sector_block_count, mifare_classic_sector_last_block -- Mifare Classic Manipulation Func- tions LIBRARY Mifare card manipulation library (libfreefare, -lfreefare) SYNOPSIS #include <freefare.h> int mifare_classic_connect(MifareTag tag); int mifare_classic_disconnect(MifareTag tag); int mifare_classic_authenticate(MifareTag tag, const MifareClassicBlockNumber block, const MifareClassicKey key, const MifareClassicKeyType key_type); int mifare_classic_read(MifareTag tag, const MifareClassicBlockNumber block, MifareClassicBlock *data); int mifare_classic_init_value(MifareTag tag, const MifareClassicBlockNumber block, const int32_t value, const MifareClassicBlockNumber adr); int mifare_classic_read_value(MifareTag tag, const MifareClassicBlockNumber block, int32_t *value, MifareClassicBlockNumber *adr); int mifare_classic_write(MifareTag tag, const MifareClassicBlockNumber block, const MifareClassicBlock data); int mifare_classic_increment(MifareTag tag, const MifareClassicBlockNumber block, const uint32_t amount); int mifare_classic_decrement(MifareTag tag, const MifareClassicBlockNumber block, const uint32_t amount); int mifare_classic_restore(MifareTag tag, const MifareClassicBlockNumber block); int mifare_classic_transfer(MifareTag tag, const MifareClassicBlockNumber block); int mifare_classic_get_trailer_block_permission(MifareTag tag, const MifareClassicBlockNumber block, const uint16_t permission, const MifareClassicKeyType key_type); int mifare_classic_get_data_block_permission(MifareTag tag, const MifareClassicBlockNumber block, const unsigned char permission, const MifareClassicKeyType key_type); int mifare_classic_format_sector(MifareTag tag, const MifareClassicSectorNumber sector); void 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); MifareClassicSectorNumber mifare_classic_block_sector(MifareClassicBlockNumber block); MifareClassicBlockNumber mifare_classic_sector_first_block(MifareClassicSectorNumber sector); size_t mifare_classic_sector_block_count(MifareClassicSectorNumber sector); MifareClassicBlockNumber mifare_classic_sector_last_block(MifareClassicSectorNumber sector); DESCRIPTION The mifare_classic_*() set of functions allow manipulation of both Mi- fare Classic 1k and Mifare Classic 4k cards. A given tag is activated using mifare_classic_connect(), deactivation is performed with mifare_classic_disconnect(). After a successful connection, an authentication for a block using a key of type key_type (either MFC_KEY_A or MFC_KEY_B) using mifare_classic_authenticate() is required for further operation. Once successfuly authenticated, data of a block can be read using mifare_classic_read() and written using mifare_classic_write(). Value-blocks can be easily accessed using the mifare_classic_read_value() and mifare_classic_init_value() functions. Additional functions are available for such blocks: mifare_classic_increment() and mifare_classic_decrement() increment or decrement the value of the provided block by amount and store the re- sult in the target's internal data register. The value in this regis- ter can also be loaded with the value from another block using mifare_classic_restore(). Writing back the value of the target's in- ternal data register to a block is requested using mifare_classic_transfer(). Permissions for a data block can be fetched using mifare_classic_get_data_block_permission(). The access permission to be checkf for key key_type is one of MCAB_R, MCAB_W, MCAB_I or MCAB_D; respectively for read, write, increment and decrement permissions. mifare_classic_get_trailer_block_permission() acts like mifare_classic_get_data_block_permission() but the available permissions are MCAB_READ_KEYA, MCAB_READ_KEYB, MCAB_READ_ACCESS_BITS, MCAB_WRITE_ACCESS_BITS, MCAB_READ_KEYB and MCAB_WRITE_KEYB. A whole sector can be reset to factory defaults using mifare_classic_format_sector(). The mifare_classic_trailer_block() is a convenience function for build- ing a trailer block block given a A key key_a; access bits for the blocks of the sector ab_0, ab_1 and ab_2; and a B key key_b. The mifare_classic_block_sector(), function returns the number of the sector holding block. The mifare_classic_sector_first_block(), mifare_classic_sector_block_count(), mifare_classic_sector_last_block() or the complement of the mifare_classic_block_sector() function and re- turn various block-level information about the provided sector. RETURN VALUES Unless stated otherwise, all functions return a value greater than or equal to 0 on success or -1 on failure. SEE ALSO freefare(3), mad(3) AUTHORS Romain Tartiere <romain@blogreen.org> Romuald Conty <romuald@libnfc.org> FreeBSD ports 15.0 March 30, 2010 MIFARE_CLASSIC(3)
NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | SEE ALSO | AUTHORS
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