Information Technology Newsweekly
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Research from Shenzhen University has provided new data on telecommunications
January 12th, 2010
'To enable fine-grained delegations for proxy re-encryption systems, in AsiaCCS'09, Weng et al.'s introduced the concept of conditional proxy re-encryption (C-PRE), in which the proxy can convert a ciphertext only if a specified condition is satisfied. Weng et al. also proposed a C-PRE scheme, and claimed that their scheme is secure against chosen-ciphertext attack (CCA). In this paper, we show that their scheme is not CCA-secure under their defined security model.'
Keywords: City:Shenzhen, Country:People's Republic of China, Data Management, Encryption, Information Encryption, Information Technology, Telecommunications
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Source: Information Technology Newsweekly (2010-01-12)