Enabling Decentralized and Dynamic Data Integrity Verification for Secure Cloud Storage via T-Merkle Hash Tree Based Blockchain

Table 4

Comparison of storage structure.

Scheme	Generation complexity	Storage space	Query efficiency
Yue et al. scheme [9]
Wang and Zhang scheme [27]
Our scheme

is the total number of blocks in the data file; is the branch number of tree; is the number of tags in a T-Merkle hash tree node; is the size of index; and is group size. Let and .