Type 2 Structure-Preserving Signature Schemes Revisited.
Sanjit Chatterjee, Alfred Menezes · 2014
Abstract. Abe, Groth, Ohkubo and Tibouchi recently presented structure-preserving signature schemes using Type 2 pairings. The schemes are claimed to enjoy the fastest signature verification. By properly accounting for subgroup membership testing of group elements in signatures, we show that the schemes are not as efficient as claimed. We present