文摘
We present a novel design for stateless transitive signature (\(\mathrm {TS}\)) for undirected graph to authenticate dynamically growing graph data. Our construction is built on the widely studied \(\mathrm {ZSS}\) signature technology [19] with bilinear mapping, and using general cryptographic hash functions (e.g., \(\mathrm {SHA}\)-512 and \(\mathrm {MD}6\)). Compared with the existing stateless \(\mathrm {TS}\) schemes for undirected graph in the literature, our scheme is more efficient. The scheme is also proven transitively unforgeable against adaptive chosen-message attack under the \(\mathrm {M2SDH}\) assumption in the random oracle model.