Abstract: PRINCE is a lightweight cryptographic algorithm proposed in CRYPT ASIA 2012,for the protection of RFID tags and the communication security of the devices such as smart cards in the Internet of things,as smart cards.A differential fault analysis method was proposed and discussed in this paper.The method is based on the PRINCE algorithm.In this method,a semi-byte fault model is adopted,and the differential fault analysis is carried out on the last PRINCEcore.Experimental results show that the semi-byte random fault is injected into the last round of the PRINCEcore,the key(k1) can be cracked by 4 fault injections to PRINCEcore part.Therefore,without the protection,the PRINCE encryption algorithm will be difficult to resist differential fault analysis.

Key words: PRINCE,Lightweight cryptographic algorithms,Differential fault analysis