NAME

       tlv_encode, tlv_decode — TLV Manipulation Functions

LIBRARY

       Mifare card manipulation library (libfreefare, -lfreefare)

SYNOPSIS

       #include <freefare.h>

       uint8_t *
       tlv_encode(const uint8_t type, const uint8_t *istream, uint16_t isize, size_t *osize);

       uint8_t *
       tlv_decode(const uint8_t *istream, uint8_t *type, uint16_t *size);

DESCRIPTION

       The tlv_encode() and tlv_decode() functions are helpers to manipulate TLV (Text-Length-Value) data.

       The  tlv_encode()  function  converts the isize bytes long istream message into a TLV stream of type type
       and set the value of osize to the length of the returned stream.

       The tlv_decode() function converts the istream TLV stream and set the type argument according to the type
       of the stream, and set the size argument to the length of the returned stream.

RETURN VALUES

       Both functions return memory allocated using malloc(3) which should  be  reclaimed  using  free(3)  after
       usage.

SEE ALSO

       freefare(3), malloc(3), free(3)

AUTHORS

       Romain Tartiere <romain@blogreen.org>
       Romuald Conty <romuald@libnfc.org>

Debian                                           March 30, 2010                                           TLV(3)