Cryptanalysis and Improvement of Two Convertible Authenticated Encryption Schemes
对两个可转变认证加密方案的分析和改进

Convertible authenticated encryption schemes are studied in this paper. The problems in Wu-Hsu's scheme (2002) and Huang-Chang's scheme (2003) are pointed out. Furthermore the improvements of the two schemes are given; for that, the public verification of authenticated encryption schemes is solved as well.