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By introducing a reputation\u2010based evaluation mechanism and a leader authentication scheme, AAR\u2010Raft achieves an effective balance between security and efficiency in leader election. Additionally, a reputation\u2010driven reward\u2010and\u2010penalty strategy combined with joint authentication among leader nodes further lowers the long\u2010term risk posed by persistent Byzantine nodes. Meanwhile, a secret\u2010sharing scheme established on RSA encryption provides the necessary privacy protection for uploading rescue information. Compared with other consensus algorithms, AAR\u2010Raft achieves superior leader\u2010election efficiency while yielding significant reductions in consensus latency and notable improvements in overall system throughput. 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