Table 8.
Security and privacy aspects in the reviewed research works (RQ4)
| Author | Confidentiality | Integrity | Threat model | Security evaluation | Privacy |
|---|---|---|---|---|---|
| Rajyashree et al. [11] | AES encryption | SHA256 hashing algorithm | No | No | Not considered |
| Sinha et al. [37] | DES and AES encryption | SHA256 hashing algorithm | No | No | Not considered |
| Singhal et al. [10] | Not considered | Not specified | No | No | Not considered |
| Sundareswaran et al. [39] | AES Encryption | Not specified | No | Partial | Not considered |
| Ullah et al. [41] | Not specified | Not specified | No | No | Considered, but not specified |
| Bhaskaran et al. [42] | AES encryption | SHA-256 hashing algorithm | No | No | Considered: anonymity of relationships, consent and access control |
| Hanbar et al. [9] | AES encryption | SHA-256 hashing algorithm | No | No | Considered: consent |
| Parra-Moyano et al. [7] | Not specified | Not specified | No | No | Considered: unlikability between users and organisations |
| Thoroddsen et al. [8] | Not specified | SHA-256 hashing algorithm | No | No | Considered: unlikability between users and organisations |
| George et al. [44] | Not specified | Not specified | No | No | Not considered |
| Rofiq et al. [45] | Not considered | Not considered | No | No | Not considered |
| Schlatt et al. [46] | Not specified | Not specified | No | No | Considered: full control and data minimisation |