1. Anderson R, Biham E, Knudsen L (1998) Serpent: a proposal for the Advanced Encryption Standard, AES CD-1: Documentation. National Institute of Standards and Technology, Information Technology Laboratory
2. ANSI X3.92 (1981) American National Standard—Data Encryption Algorithm. American National Standards Institute
3. Biham E, Biryukov A (1997) An improvement of Davies’ attack on DES. J Cryptol 10: 195–205
4. Biham E, Shamir A (1991) Differential cryptanalysis of DES-like cryptosystems. J Cryptol 4:3–72
5. Biryukov A, De Canniere C, Braeken A, Preneel B (2003). A toolbox for cryptanalysis: linear and affine equivalence algorithms. In: Biham E (eds). Advances in cryptology—proceedings EUROCRYPT ’03, LNCS 2656. Springer-Verlag, Berlin, pp. 33–50