Loud Computing Seurity/ Access Control and Revocation

If the new writer can produce a paper that can be submitted to a high quality security specialized journal paper, then it will be fine. Just be sure he does not write a paper that define computer science terms or security terms like Encryption”, decryption”, revocation”, Authenticationas the previous writer did. This is a journal paper not a book, the final reader is research student or professor who is expert in the research area, he does not expect to tell him the meaning of these terms, he expects to see new solutions for existing problems, to see experiments and results and comparisons. .
If the new writer can write considering that, then I would give him a chance. But please be sure that it does not take long time.

I want to write a research paper in the above topic , I want to publish it to IEEE SECURITY & PRIVACY journal. The paper should address the current security problem in Cloud Computing Services which is: how to provide flexible access control and revocation scheme and he should find a new solution and compare it with the existing works that had been done before. The results should be represented by charts and tables. Some existing works are :
1Access control for cloud-based eHealth social
networking: design and evaluation”, Yan Bai1*,et al, SECURITY AND COMMUNICATION NETWORKS
2CloudAC: a cloud-oriented multilayer access control
system for logic virtual domain”, Weizhong Qiang1 et al. Published in IET Information Security
3A fine-grained access control and revocation scheme on clouds Shan-shan Tu*,a , Shao-zhang Niu and Hui Li, CONCURRENCY AND COMPUTATION: PRACTICE AND EXPERIENCE
4. Securing Personal Health Records in Cloud
Computing: Patient-centric and Fine-grained
Data Access Control in Multi-owner Settings. Ming Li1, Shucheng Yu1 and Kui Ren2, and Wenjing Lou
5. HASBE: A Hierarchical Attribute-Based Solution
for Flexible and Scalable Access Control
in Cloud Computing et al. IEEE TRANSACTIONS ON INFORMATION FORENSICS AND SECURITY, VOL. 7, NO. 2, APRIL 2012 743.