Analysis of Blowfish cryptography

Since Blowfish algorithm has been proposed and applied widely,a lot of attacks aiming at it have appeared,but none of them has substantial challenge to it.Concerning the weakness of Blowfish algorithm that appeared in the encrypting process,the detailed process was given that the subkey array renewed from Blowfish algorithm could educe a key array K directly,which may result in that the whole Blowfish algorithm was broken in applications.Moreover,slide attack was proved to be not effective to Blowfish algorithm with reduction to Absurdity,its precondition was not satisfied.