Authors :
Ahmad Rufa’i; Anas Tukur Balarabe; Isah Muazu; Muhammad Sirajo
Volume/Issue :
Volume 5 - 2020, Issue 12 - December
Google Scholar :
http://bitly.ws/9nMw
Scribd :
https://bit.ly/3n10Gng
Abstract :
Data security has turned-out to be a very
important aspect in recent years due to drastic progress
in the use of internet, data is frequently transferred from
one place to another especially with the use of internet in
recent years. Sensitive information can be shared
through internet but this information sharing is
vulnerable to certain attacks. Cryptography was
introduced to solve this problem. Cryptography is the
art of achieving security by encoding the plaintext
message to cipher text. Many ciphers have been
developed to provide data security, such as Caesar
cipher, Hill cipher, Vigenere cipher, Rail fencing cipher,
Playfair cipher and so on, but all the conventional
encryption techniques have proved to be weak and
amenable to attack even by use of brute force and
traditional cryptanalysis. In this work three of those
existed ciphers will be considered (i.e. Caesar cipher, Hill
cipher and RSA Algorithm) and their weaknesses will be
proved. The three ciphers will be measured as functions
(bijection) and idea of composition of functions will be
used to combine and compose the functions so as to
provide an improved encryption technique (hybrid
cipher system) by combining RSA Algorithm together
with Shifting and Hill ciphers
Data security has turned-out to be a very
important aspect in recent years due to drastic progress
in the use of internet, data is frequently transferred from
one place to another especially with the use of internet in
recent years. Sensitive information can be shared
through internet but this information sharing is
vulnerable to certain attacks. Cryptography was
introduced to solve this problem. Cryptography is the
art of achieving security by encoding the plaintext
message to cipher text. Many ciphers have been
developed to provide data security, such as Caesar
cipher, Hill cipher, Vigenere cipher, Rail fencing cipher,
Playfair cipher and so on, but all the conventional
encryption techniques have proved to be weak and
amenable to attack even by use of brute force and
traditional cryptanalysis. In this work three of those
existed ciphers will be considered (i.e. Caesar cipher, Hill
cipher and RSA Algorithm) and their weaknesses will be
proved. The three ciphers will be measured as functions
(bijection) and idea of composition of functions will be
used to combine and compose the functions so as to
provide an improved encryption technique (hybrid
cipher system) by combining RSA Algorithm together
with Shifting and Hill ciphers
