Authors :
Nazia Shoukat, Dr. Muhammad Azam, Dr. Imran Khan
Volume/Issue :
Volume 7 - 2022, Issue 10 - October
Google Scholar :
https://bit.ly/3IIfn9N
Scribd :
https://bit.ly/3TVA3AO
Abstract :
Cryptography is an ancient technique of data
security that is used to protect data from unauthorized
access. It is used in many applications on commercial
organizational or industrial scales to secure data. Data
encryption is a process of converting data into cipher text.
This is the most effective way to achieve data security. In
this paper, we have imposed a new method to enhance the
vigenere cipher for more efficiency and security. Though,
the classical Vigenere cipher is extremely easier to crack
and also vulnerable to attacks. To improve the data
confidentiality of cipher text security features, we use the
Relative Frequency of Alphabetic Letters. We arranged
the sequence of the letter according to the relative
frequency and arranged them in increasing order and
then we performed some modifications in the Vigenere
cipher by using the relative letter frequency technique
and then compressed the text data. The proposed
procedure improves the confidentiality of a text message
by introducing multiple layers of security processes such
as encryption and decryption, and compression,
respectively. The purpose of this article is to improve the
security of classical Vigenere cipher based on using
relative frequency analysis for the encryption to secure
the data and then the lossless Huffman technique
compresses the resultant generated text. To sum up, the
ensuing proposed technique produces a more secure and
short length of data code than the existing process.
Keywords :
vigenere cipher; Huffman; relative letter frequency; and data compression.
Cryptography is an ancient technique of data
security that is used to protect data from unauthorized
access. It is used in many applications on commercial
organizational or industrial scales to secure data. Data
encryption is a process of converting data into cipher text.
This is the most effective way to achieve data security. In
this paper, we have imposed a new method to enhance the
vigenere cipher for more efficiency and security. Though,
the classical Vigenere cipher is extremely easier to crack
and also vulnerable to attacks. To improve the data
confidentiality of cipher text security features, we use the
Relative Frequency of Alphabetic Letters. We arranged
the sequence of the letter according to the relative
frequency and arranged them in increasing order and
then we performed some modifications in the Vigenere
cipher by using the relative letter frequency technique
and then compressed the text data. The proposed
procedure improves the confidentiality of a text message
by introducing multiple layers of security processes such
as encryption and decryption, and compression,
respectively. The purpose of this article is to improve the
security of classical Vigenere cipher based on using
relative frequency analysis for the encryption to secure
the data and then the lossless Huffman technique
compresses the resultant generated text. To sum up, the
ensuing proposed technique produces a more secure and
short length of data code than the existing process.
Keywords :
vigenere cipher; Huffman; relative letter frequency; and data compression.
