In this article, We are going to learn about the Cryptography and Role of Cryptography in CyberSecurity Field.

Definition:

Cryptography is associated with the action of converting an accustomed apparent argument into an unintelligible argument and vice-versa. It is an adjustment of autumn and transmitting abstracts inaccurate anatomy so that alone those for whom it is advised can apprehend and action it. Cryptography not alone protects abstracts from annexation or alteration, but can additionally be acclimated for user authentication.

Cryptography is the address of accepting advice and communications through the use of codes so that alone those being for whom the advice is advised can accept it and action it. Thus preventing crooked admission to information. The prefix “crypt” agency “hidden” and suffix graph agency “writing”.

In Cryptography the techniques which are used to assure advice are acquired from algebraic concepts and a set of aphorism-based calculations accepted as algorithms to catechumen letters it means that accomplish it adamantine to break it. These algorithms are acclimated for cryptographic key generation, agenda signing, analysis to assure abstracts privacy, web browsing on the internet, and to assure arcane affairs such as acclaim agenda and debit agenda transactions.

Techniques used For Cryptography:

In today’s age of computers cryptography is generally associated with the action area an accustomed apparent argument is adapted to blank argument which is the argument fabricated such that advised receiver of the argument can alone break it and appropriately this action is accepted as encryption. The action of about-face of blank argument to apparent argument this is accepted as decryption.

Why to Use Cryptography in 2021:

You must learn a lesson from the WhatsApp, Recently whatsapp has made some change in Policy – In Which Whatsapp requested to permissions from user, In which their data will be shared publicly, and if user denies It, They will lost their account before 25 Feb, 2021. As per Elon Musk Tweet – “Use Signal”, Signal’s profit increased by 1100%. Signal is an social media platform which is the most secured social media platform developed by the Founder of WhatsApp. Due to it’s privacy and Cryptography technique used in the App, It got a sudden due to a single tweet by Elon.

Now Technically, In today’s age of computers cryptography is generally associated with the action area an accustomed apparent argument is adapted to blank argument which is the argument fabricated such that advised receiver of the argument can alone break it and appropriately this action is accepted as encryption. The action of about-face of blank argument to apparent argument this is accepted as decryption.

Characteristics of Cryptography:

  1. Confidentiality: Information can alone be accessed by the actuality for whom it is advised and no added actuality except him can admission it.
  2. Integrity: Information cannot be adapted in accumulator or alteration amid sender and advised receiver after any accession to advice actuality detected.
  3. Non-repudiation: The creator/sender of advice cannot abjure his or her ambition to accelerate advice at after stage.
  4. Authentication: The identities of the sender and receiver are confirmed. As able-bodied as destination/origin of advice is confirmed.

Different Types of Cryptography:

Generally, There are 3 types of Cryptography:

Symmetric Key Cryptography: It is an encryption arrangement area the sender and receiver of the bulletin use a distinct accepted key to encrypt and break messages. Symmetric Key Systems are faster and simpler but the botheration is that sender and receiver accept to somehow barter key in a defended manner. The best accepted symmetric key cryptography arrangement is Data Encryption System(DES).
Hash Functions: There is no acceptance of any key in this algorithm. An assortment amount with anchored breadth is affected as per the apparent argument which makes it absurd for the capacity of the apparent argument to be recovered. Many operating systems use assortment functions to encrypt passwords.
Asymmetric Key Cryptography: Under this arrangement, a brace of keys is acclimated to encrypt and break information. An access key is acclimated for encryption and a clandestine key is acclimated for decryption. Accessible keys and Clandestine Key are different. Even if the access key is accepted by anybody the advised receiver can abandon break it because he abandoned knows the clandestine key.