Efficient revocable certificateless encryption against decryption key exposure

• DOI: 10.1049/iet-ifs.2014.0145
• Publication Date: 2014-09-24T15:15:20Z
• Authors: Yinxia Sun; Futai Zhang; Limin Shen; Robert H. Deng
• Keywords: Key escrow; Revocation

Certificateless public key cryptosystem (CLPKC) improves the identity based to be key-escrow free. Many research works on CLPKC have been presented so far. However, revocation problem in still lacks effective solutions. The current approaches suffer from either low efficiency or security weakness. In this study, we propose first 'scalable revocable' certificateless encryption (RCLE) scheme against 'decryption exposure'. is provably secure standard model. Moreover, give a second interesting RCLE whose decryption very short.