DR Stinson "Cryptology" In Some Of The Tradtional Method Of Encoding And Decoding To Improve

traditional coding and decoding methods were subtle study. And gives someimprovements.The innovation of papers are:1. Gives the shift of a decoding method of passwords.2. The traditional method of affine crack passwords, and in some conditions, be ableto decipher success, and in some conditions, can not decipher the success. We give -a new type of decoding methods can be successful under any conditions candecipher.3. Improved Virginia password on the probability of an error in the formula,but alsoon the Virginia code-breaking of the last step has been improved, so that decipheringthe faster.4. For Huffman coding has been improved to reduce the expression of the weightedaverage length of the encoding Gives the inverse Huffman coding sequence from theencoding size of the weighted average length of the considerations, this method thanthe Huffman code much better.5. Gives the entropy of some of the new character.