Cryptography: The Basics
Cryptography is a method to providing security or protection for our data, Information and communications by using hash value, So that only the authorized person can understand. When cryptography is applied in the information then our information in convert into cipher text (hash value) that can not be understandable by unauthorized person and this process is known as Encryption.
Features Of Cryptography
Confidentiality
The information only can be accessed by the authorized person. any other person(unauthorized person) can not be access the information.
Integrity
Information can not be modified in storage unite or during the transition between sender and receiver.
Non-repudiation
After sometime the creator or sender of information can not deny his or her intention to send information.
Authentication
The process of verifying that person is authorized or unauthorized using some parameters like : login credentials is called authentication.
Types Of Cryptography
Normally there are two types Of cryptography- Symmetric Key Cryptograph
- Asymmetric Key Cryptograph
Symmetric Key Cryptography
Symmetric cryptography is the process of cryptography in which the single key is used for the encryption of plain text and the decryption of cipher text. In this type of cryptography, the sender and the receiver have the same key.
Asymmetric Key Cryptography
In asymmetric cryptography, two different keys are used for encryption and decryption of data. The name of these keys are public key and private key. The public key is the one whose information is known to everyone, whereas only the receiver knows about the private key.
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