Research Article
A Fine-Grained IoT Data Access Control Scheme Combining Attribute-Based Encryption and Blockchain
| | Begin | | hashfile, hashipfs ⟵ QueryCont(file) | | if SK not exist then | | SK = CPABE. KeyGen (PK, MK, A) | | end if | | encfile = IPFS. Query (file, hashipfs) | | enckey = Get (Owner) | | deckey = CPABE. Decrypt (PK, enckey, SK) | | decfile = AES. Dec (deckey, encfile) | | dechash = SHA256. Hash (decfile) | | If dechash equal hashfile then | | return success | | Else | | return failure | | End |
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