Research Article
PPSEB: A Postquantum Public-Key Searchable Encryption Scheme on Blockchain for E-Healthcare Scenarios
| Input: set , ciphertext , current period , trapdoor | | Output: | | (1) | Compute | | (2) | Set | | (3) | Select integer satisfies | | (4) | fordo | | (5) | ifthen | | (6) | The medical cloud sever will abort it and Return False. | | (7) | else | | (8) | Set up to | | (9) | end if | | (10) | endfor | | (11) | ifthen | | (12) | Return | | (13) | else | | (14) | Return False | | (15) | end if |
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