Research Paper: Asymmetric and Symmetric key cryptography

Time is on the side of an attacker or rogue company in intercepted network communications. Among different reasons for this is the fact that there might be an ample time for changes to take place which give an attacker opportunity to examine the traffic and to look for reuse of key stream (a long sequence of pseudonym bytes). After a one-time effort investment, the attackers can make key streams corresponding to each initialization. Vector (IV) i.e. an arbitrary number, which can be utilized in combination with a key for data encryption.

Below are few benefits and short-comings of asymmetric and symmetric key cryptography:

Symmetric key encryption utilizes the same key for both encryption and decryption. On the other hand, asymmetric key encryption makes use of different keys for encryption as well as decryption. An issue associated with symmetric key encryption is exchanging keys over the large network or web whilst also preventing them from falling into danger. Asymmetric key encryption does not face this issue due to the reason that it incorporates two keys: a public key to whoever wants to send the user a message and a private key that is kept secret by the user. Any person who obtains access to a key in symmetric key encryption can decrypt the message stored in it. However, in asymmetric key distribution, this is avoided by matching the key that is required for decrypting the message. Furthermore, symmetric key encryption is much faster as compared to asymmetric key encryption. . Another benefit of symmetric key encryption is that it is easy to use and not much expensive. In contrast, asymmetric key encryption is more costly and inherits a special structure.

Data in transit refers to the data that is being transferred between two nodes in a network. This data is deemed to be secure as it is being protected by the host. This indicates that no third party host can spy on the communication between the two hosts. Malicious users may attempt to intercept or monitor plaintext (data that can be read without interpretation) transmitting across the unencrypted network and gain unauthorized access to it, thereby overcoming the confidentiality of any sensitive data. There are many kinds of information sent over a network that can be harmless if read. For example, any casual conversations caught whole or in part can have no damaging consequence if it does not contain any confidential information.

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