Research Article
Analysis and Improvement on an Authentication Protocol for IoT-Enabled Devices in Distributed Cloud Computing Environment
| Symbol | Description |
| CS | The control server | | mth cloud server | | Identity of the mth cloud server | | Random number of | | ith user | | Identity of the user | | Password of the user | | Two random numbers of | | Secret numbers of CS | | Hash function | | Timestamp | | Bit-wise xor operation | || | Concatenate operation |
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