Research Article
Improved Lightweight Cloud Storage Auditing Protocol for Shared Medical Data
| Symbols | Description |
| | Two multiplicative cyclic groups with a large prime order | | A secure hash function such that | | A secure hash function such that | | A prime field with nonzero elements | | The generator of group | | A shared data file with blocks and slices. | | The blind data block. | | The secret seed (input key) of a pseudo-random function | | A pseudo-random function such that | | The number of random values is consistent with the number of slices of the data block. | | The blinding factor corresponding to the -th data block such that | | ’s private key used to generate data authentication label | | The authentication label for the -th blind data block | | The authentication label for the -th data block | | The number of TPM | | The identity of the group manager |
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