8D.C-Lagoa, E.C-Montenegro, F.J.G-Castao, F.G-Castieira. Secure eTickets Based on QR-Codes with User-Encrypted Content[C]. Consumer Electronics (ICCE), 2010 Digest of Technical Papers International Conference. 2010: 257-258.
9M. Jian, Y.Yang. Application of Mobile 2D Barcode in China [C]. Wireless Communications, Networking and MobileCom- puting, 2008. WiCOM '08.4th International Conference.2008: 1-4.
10RSA Laboratories. PKCS #5:Password-Based Cryptography Standard[S]. Version 2.1, October 5, 2006.
