A Modified Version of Playfair Cipher Using 7×4 Matrix
This paper deals with the modification of playfair cipher. The original 5x5 matrix playfair cipher is modified to 7x4 matrix playfair cipher in which two symbols* and ＃ are included. The addition of these two symbols in the matrix creates one-to-one correspondence between the plaintext and the ciphertext, which make the encryption and decryption processes easy and unambiguous. The text is more unreadable when these symbols appear in the resulting ciphertext. Also this method can be extended to encrypt and decrypt the messages of any language by taking a proper size matrix.
Cryptograph Plaintext Ciphertext Substitution Cipher Ttransposition Cipher Playfair Cipher
Aftab Alam Shah Khalid Muhammad Salam
Computer Science & IT University of Malakand Chakdara, K.P.K, Pakistan
国际会议
2010 International Conference on Software and Computing Technology(2010年软件与计算机技术国际会议 ICSCT 2010)
昆明
英文
496-498
2010-10-17（万方平台首次上网日期，不代表论文的发表时间）