Research Article
Blockchain-Empowered High-Frequency Spectrum Management IoT: A Multilayer PBFT Consensus Perspective
Algorithm 1
Two-layer PBFT consensus: primary.
| while valid request1 received=True do | | if client identity authenticated=True then | | m ← n | | multicasts pre−prepare1 to Primary | | end if | | end while | | while valid prepare1 received=True do | | if number of valid prepare1≥ 2fthen | | prepare1=valid | | multicast commit1 to | | end if | | end while | | while valid commit1 received=True do | | if number of valid commit1≥2fthen | | commit1=valid | | end if | | end while | | while valid reply1 received=True do | | if number of valid reply1≥2fthen | | reply client with reply1 | | end if | | end while |
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