Abstract:
Key-insulated encryption reduces the problem of secret key exposure in hostile setting while signcryption cryptosystem
attains the benefts of digitally signing a ciphertext and public key cryptosystem. In this study, we merge the primitives
of parallel key-insulation cryptosystem and signcryption with equality test to construct ID-based parallel key-insulated
signcryption with a test for equality (ID-PKSET) in cloud computing. The construction prevent data forgery, data re play attacks and reduces the leakage of secret keys in harsh environments. Our scheme attains the security property
of existential unforgeable chosen message attack (EUF-CMA) and indistinquishable identity chosen ciphertext attack
(IND-ID-CCA2) using random oracle model.
