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TLV(3) Library Functions Manual TLV(3) 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 ar- gument 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> FreeBSD ports 15.0 March 30, 2010 TLV(3)
NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | SEE ALSO | AUTHORS
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