Cryptography: Process, Types, Symmetric, Asymmetric, Public & Private Key | Computer Science

Practice Computer Science and complete notes: https://www.doorsteptutor.com/Exams/UGC/Computer-Science/ For long answers: https://www.doorsteptutor.com/Exams/GATE/Computer-Science/ NTA NET Paper 1 Online Crash Course - https://www.doorsteptutor.com/Exams/UGC/Paper-1/Online-Crash-Course/ NTA NET Paper 1 Mock papers - https://www.doorsteptutor.com/Exams/UGC/Paper-1/Online-Test-Series/ NTA NET Paper 1 Practice questions - https://www.doorsteptutor.com/Exams/UGC/Paper-1/Questions/ NTA NET Paper 1 Postal Course - https://www.examrace.com/NTA-UGC-NET/NTA-UGC-NET-FlexiPrep-Program/Postal-Courses/Examrace-NTA-UGC-NET-Paper-I-Series.htm NCERT, Yojana, Kurukshetra, Down to Earth, Science, Social Studies and More interesting topics subscribe at Examrace: https://www.youtube.com/c/Examrace NCERT, Yojana, Kurukshetra, Down to Earth, Science, Social Studies and More interesting topics subscribe at ExamraceHindi: https://www.youtube.com/c/ExamraceHindi For classes nursery to class 5 videos subscribe to FunProf: https://www.youtube.com/c/FunProf For Science Class 11-12 and important topics subscribe to DoorStepTutor: https://www.youtube.com/c/DoorstepTutor Topics: Introduction of Cryptography What is Cryptography Processes of cryptography How it works Types of Cryptography Symmetric Key Cryptography Asymmetric Key Cryptography Public key Private key MCQs Introduction of Cryptography Cryptography is a an art by which we can protect our data and information. The word Cryptography is derived from the Greek word called “Kryptos” which means “Hidden Secrets”. What is Cryptography This is a technique by which we convert plain text to cipher text and cipher text are again converted to plain text. A Plain text means a message that anyone can read and understand its meaning. But ciphers text is a message that can be read but cannot be understood that what it is written and what it means. This data can be read only by the one who has the secret key to decrypt it. It is used to protect email message credit card details and other important information. It provides Confidentiality, Integrity, Accuracy. Processes of cryptography Cryptography has two important processes, encryption and decryption. In Encryption plaintext is converted to cipher text. Decryption again converts the cipher text to plain text. How it work It converts the service message into code, scrambles it and creates the encryption key. After this only one can unlock this message for which the message is. Types of Cryptography There are two types of Cryptography Symmetric Key Cryptography Asymmetric Key Cryptography Symmetric Key Cryptography: Only one key is used meaning that it has the same key for encryption and decryption. In this, data or information is encrypted and decrypted using a same key. Advantages It is simple and fast Disadvantage Less secured. Asymmetric Key Cryptography It has different keys for both encryption and decryption. In this Public key and private key are two types of keys and both key are interrelated. Public key is used to encryption. Private key is used to decryption. Advantages It is more secure & Authentication Disadvantage very complex Public key Public key is used for encryption, hence it is also called encryption key. The public key belongs to the receiver but receiver shares it with the sender, through which the sender encrypt its message and send it to the receiver via the channel. Chapters: 0:00 Cryptography 0:07 Topics 0:45 Introduction 1:22 What is Cryptography? 3:06 Processes of Cryptography 3:46 How its Cryptography Work? 4:38 Types of Cryptography 5:16 Symmetric Key Cryptography 6:43 Asymmetric Key Cryptography 7:53 Public Key 8:32 Private Key 9:19 Advantages of Cryptography 9:53 Conclusion 11:04 Questions #cryptography #introduction #processesofcryptography #typesofcryptography #symmetrickeycryptography #asymmetrickeycryptography #publickey #privatekey #advantagesofcryptography #conclusion #testprep #ugcnet #doorsteptutor #examrace