Comments on an Advanced Dynamic ID-Based Authentication Scheme for Cloud Computing. - Ding Wang 002; Ying Mei; Chunguang Ma; Zhen-shan Cui (WISM, 2012)

Cryptanalysis of Two Dynamic ID-based Remote User Authentication Schemes for Multi-Server Architecture. - Ding Wang 002; Chunguang Ma; De-li Gu; Zhen-shan Cui (IACR Cryptol. ePrint Arch., 2012)