Abstract:
Data security is the challenging issue in todays
world that touches many areas using computer
communication. Recent cyber security attacks have
certainly played with the sentiments of the users [9].
Encryption is one of the ways to protect data from
unauthorized access and is used in many fields such as
medical science, military and diplomatic
communication. To achieve data security, different
cryptographic algorithms (symmetric and asymmetric)
are used that jumbles data into scribbled format that
can only be reversed by the user that has to decrypt
key. This paper study on existing cryptographic
algorithms and also gives the advantages and
disadvantages of symmetric and asymmetric encryption
techniques.