作者: Li Huizhong , Li Haoxuan , Fan Ruibin , Yan Qiang , Zhang Kaixiang
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摘要: The embodiment of the invention provides a block chain-based competition ranking method and device, relates to technical field science technology finance, comprises steps: downloading all ciphertext pairs from chain, determining target pair encrypted by first public key pairs;and decrypting competitive in adopting private key, attribute pair, sequentially comparing two values each rank party. Due fact that sensitive allthe competitors are hidden values, it is guaranteed any competitor cannot know other competitors. obtained after encryption identity be determined based on so can only obtain competitors, privacy data effectively protected.