An Improved Parallel Signcryption Scheme
Daoping Huang · Computer Technology and Development · 2010
In order to reduce the message redundancy of the Optimal Parallel Signcryption and make it more efficient,proposed a improved parallel signcryption scheme by using information dispersal algorithms,while leaving the security conclusions intact.The size of the signed-ciphertext is nearly minimal;it is equal to the minimal bound plus a piece of information whose length does not depend on the secret size but on the security parameter.Besides,the improved parallel signcryption scheme preserve the original advantages of Optimal Parallel Signcryption: signcryption and de-signcryption both in parallel,any suitable encryption and signature schemes could be used,very weak security requirement of the shemes.Therefore,the proposition could be more applicable especially when used in long-message signcryption.