Research Article
A Secure Fair Exchange for SMS-Based Mobile Payment Protocols Based on Symmetric Encryption Algorithms with Formal Verification
Table 11
Comparison of mobile payment protocols.
| | Protocol | Type of Fairness | Uses TTP | TTP Type |
| | [1] | No Fairness | No | Without TTP |
| | [5] | No Fairness | No | Without TTP |
| | [6] | No Fairness | No | Without TTP |
| | [7] | No Fairness | No | Without TTP |
| | [8] | No Fairness | No | Without TTP |
| | [3] | No Fairness | No | Without TTP |
| | [9] | Weak Fairness | Yes | Online |
| | [25] | No Fairness | No | Without TTP |
| | Purchase Credit | Strong | Yes | Online |
| | Making Payment | Strong | Yes | Online |
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