Analysis of One Proxy Re-Encryption Scheme
Unlike some earlier proxy re-encryption schemes, the LV08 scheme specifies a validity-checking process to guarantee that the received ciphertext is well-formed. In this paper, we clarify that the received message is well-formed is the premise to decryption in all encryption schemes. The underlying mechanism to keep the communicated message well-formed in encryption schemes is another topic. We will simplify the LV08 scheme and show its security level is the same as that of the AFGH05 scheme.
Robin G. Qiu and Yongfeng Ju
L. H. Liu and Z. J. Cao, "Analysis of One Proxy Re-Encryption Scheme", Applied Mechanics and Materials, Vols. 135-136, pp. 284-288, 2012