179 citations · 182 across the 2 of their papers we have counts for
2 papers
cs.CR2016★ 179 cited
On the security defects of an image encryption scheme
Chengqing Li, Shujun Li, Muhammad Asim +3
This paper studies the security of a recently-proposed chaos-based image encryption scheme, and points out the following problems: 1) there exist a number of invalid keys and weak…
cs.CR2012★ 3 cited
Enforcing Access Control in Virtual Organizations Using Hierarchical Attribute-Based Encryption
Muhammad Asim, Tanya Ignatenko, Milan Petkovic +2
Virtual organizations are dynamic, inter-organizational collaborations that involve systems and services belonging to different security domains. Several solutions have been propos…