A new ultra-lightweight qtl block cipher implementation

The present invention discloses a novel block cipher super lightweight QTL-implemented method, the method by designing new generalized Feistel network structure which method overcomes the traditional round Feistel network structure iteration change only less than half of the data packet, so that one iteration to change all of the packet data. Falun arithmetic operator F-functions F1 and F2 function comprising, respectively S1 and S2 cartridge, followed by F-function transformation process applied round keys, replace the cartridge S, P substitution, replacement cartridge S; different S-boxes, P permutation only hardwiring, super-light function F is constructed S-boxes. Algorithm structure in symmetric encryption algorithm decryption module multiplexing, exchanging encryption round key can be decrypted using sequential, simple operation, without consuming additional resources to achieve decryption. Relative to the current lightweight cryptography, its smaller footprint, high performance encryption, resistant to known attacks.