# RACHEM: Reinforced Reliable Computing in Cloud by Ensuring Restricted Access Control
## 2 Literature Survey
### Algorithmic Procedure for RACHEIM
These extensions will make the system more resilient, scalable, and suitable for real-world enterprise applications that demand high agility and robust security compliance. Conceptualization, U.R.S. ; methodology, U.R.S. ; software, U.R.S. and R.K.; validation, U.R.S. and R.K.; formal analysis, U.R.S. ; investigation, U.R.S. ; resources, U.R.S. and R.K.; data curation, U.R.S. ; writing--original draft preparation, U.R.S. ; writing--review and editing, U.R.S. and R.K.; visualization, U.R.S. ; supervision, R.K.; project administration, R.K. All authors have read and agreed to the published version of the manuscript. This research received no external funding. **Data Availability Statement:** No new data were created. ## Conflicts of Interest: The authors declare no conflicts of interest. ## Abbreviations

The following abbreviations are used in this manuscript: \begin{tabular}{l l} ABAC & Attribute-Based Access Control \\ ABE & Attribute-Based Encryption \\ ACL & Access Control List \\ AD & Active Directory \\ AES & Advanced Encryption Standard \\ API & Application Programming Interface \\ AR & Augmented Reality \\ AWS & Amazon Web Services \\ B2B & Business-to-Business \\ B2C & Business-to-Customer \\ CCG & Cipher Cloud Gateway \\ CDC & Cloud Data Centre \\ CIA & Confidentiality, Integrity, and Availability \\ CRM & Customer Relationship Management \\ CSP & Cloud Service Provider \\ DES & Data Encryption Standard \\ DoS & Denial-of-Service \\ FHE & Fully Homomorphic Encryption \\ HE & Homomorphic Encryption \\ HIBE & Hierarchical Identity-Based Encryption \\ HKM & Hierarchical Key Management \\ IAM & Identity and Access Management \\ IBE & Identity-Based Encryption \\ ICS & Industrial Control System \\ MFA & Multi-Factor Authentication \\ OAuth & Open Authorization \\ OCI & Oracle Cloud Infrastructure \\ PHE & Partial Homomorphic Encryption \\ RBAC & Role-Based Access Control \\ RBAHE & Role-Based Access Using Homomorphic Encryption \\ RBAIBE & Role-Based Access Using Identity-Based Encryption \\ RBE & Role-Based Encryption \\ RMM & Role Monitor Module \\ RSA & Rivest Shamir Adleman \\ RUL & Role User List \\ SLA & Service Level Agreement \\ SP & Service Provider \\ SSO & Single-Sign-On \\ SU & Service User \\ TMS & Trust Management System \\ TMM & Trusted Manager Module \\ VR & Virtual Reality \\ XSS & Cross-Site Scripting \\ \end{tabular} 

## References

* (1) [PERSON] _Data Breaches That Have Happened in 2022 and 2023 So Far_; Tech.co: London, UK, 2023. * (2) [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON] _Data Breach Investigations Report_; Verizon Business: New York, NY, USA, 2021. * (3) [PERSON]; [PERSON]; [PERSON]; [PERSON] [PERSON] A Novel Digital Forensic Framework for Data Breach Investigation. _IEEE Access_**2023**, _11_, 42644-42659. [CrossRef]
* (4) IBM Security. _Cost of a Data Breach Report_; IBM Corporation: Armonk, NY, USA, 2021; Available online: [[https://www.ibm.com/reports/data-breach](https://www.ibm.com/reports/data-breach)]([https://www.ibm.com/reports/data-breach](https://www.ibm.com/reports/data-breach)) (accessed on 5 April 2025). * (5) IBM Security. _Identity Cones Under Attack, Straining Enterprises Recovery Time from Breaches_; IBM Corporation: Armonk, NY, USA, 2024; Available online: [[https://newsroom.ibm.com/2024-02-21-IBM-Report-Identity-Comes-Under-Attack,-Straining-Enterprises-Recovery-Time-from-Breaches](https://newsroom.ibm.com/2024-02-21-IBM-Report-Identity-Comes-Under-Attack,-Straining-Enterprises-Recovery-Time-from-Breaches)]([https://newsroom.ibm.com/2024-02-21-IBM-Report-Identity-Comes-Under-Attack,-Straining-Enterprises-Recovery-Time-from-Breaches](https://newsroom.ibm.com/2024-02-21-IBM-Report-Identity-Comes-Under-Attack,-Straining-Enterprises-Recovery-Time-from-Breaches)) (accessed on 7 April 2025). * (6) [PERSON] Cybercrime to Cost the World $10.5 Trillion Annually by 2025. _Cybercrime Mag._**2020**, _13_, 11. * (7) [PERSON]; [PERSON]; [PERSON]; [PERSON] Attribute-Based Encryption for Fine-Grained Access Control of Encrypted Data.