Research Article
A Consensus Algorithm Based on Risk Assessment Model for Permissioned Blockchain
Table 13
Comparisons between two types of consensus algorithm in blockchain.
| Consensus algorithms | Complexity of consensus | Crash fault tolerance | Byzantine fault tolerance | Sybil attack | Targeted attack |
| PBFT | | 33% | 33% | Vulnerable | Vulnerable | Tendermint BFT | | 33% | 33% | Vulnerable | Vulnerable | RAFT | | 33% | / | Vulnerable | Vulnerable | CRAFT | | 51% | 51% | / | Vulnerable | Beh-Raft | | 51% | 51% | Safe | / | RAC | | 51% | 51% | Safe | Safe |
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