Design and development of a secure certificateless proxy signature based (SE-CLPS) encryption scheme for cloud storage

Certificateless Public Key Cryptography (CL-PKC) scheme is a new standard that combines Identity (ID)-based cryptography and tradi- tional PKC. It yields better security than the ID-based without requiring digital certificates. In CL-PKC scheme, as Generation Center (KGC) generates public key using partial secret key, need for authenticating by trusted third party avoided. Due to lack of authentication, associated with private user may be replaced anyone. Therefore, ciphertext cannot decrypted accurately. To mitigate this issue, an Enhanced Proxy Signature (E-CLPS) proposed offer high guarantee requires minimum computational cost. work, Hackman tool used detecting dictionary attacks in cloud. From experimental analysis, it observed E-CLPS Attack Detection Rate, True Positive Negative Rate Minimum False Positives Negatives existing schemes.