What are components that make up a cryptosystem?
8/28/2019IT Security: Defense against the digital dark arts - Home | CourseraCongratulations! You passed!Next Item1.What are the components that make up a cryptosystem? Check all that apply.Un-selected is correctCorrectGreat job! A cryptosystem is a collection of algorithms needed to operate an encryption service.This involves generating encryption keys, as well as encryption and decryption operations.CorrectGreat job! A cryptosystem is a collection of algorithms needed to operate an encryption service.This involves generating encryption keys, as well as encryption and decryption operations.Transmission algorithmsKey generation algorithmsEncryption algorithmsDecryption algorithms1 / 1point Show 1/3CorrectGreat job! A cryptosystem is a collection of algorithms needed to operate an encryption service.This involves generating encryption keys, as well as encryption and decryption operations. What is Cryptosystems?A cryptosystem is also called a cypher system. It implements cryptographic techniques using various cryptographic components such as plain text, encryption algorithm, cypher text, decryption algorithm, and encryption key to provide information security services. There are two types of a cryptosystem, such as Symmetric Key Encryption and Asymmetric Key Encryption. You can see the sender want to send a message to a receiver secretly, without revealing it to any third party in the above diagram. To accomplish that, the cryptosystem comes into the picture. At the sender system, the cryptosystem takes the sender Message i. Plain text and using a secret key (encryption key) it performs some encryption algorithm, forms a ciphertext, and then sends it to the receiver. After receiving ciphertext at the receiver side cryptosystem perform decryption algorithms using a secret key (decryption key) and convert cipher text into plain text. The cryptosystem’s goal is to send private data from sender to receiver without interpretation of any third party. Components of CryptosystemLet us discuss some of the components below. 1) Plain textThe plain text is a message or data which can understand by anyone. 2) CiphertextThe ciphertext is a message or data that is not readable; it is accomplished by performing the encryption algorithm on plain text using an encryption key. 3) Encryption AlgorithmIt is a process of converting plain text into Ciphertext using an encryption key. It takes two inputs, i.e. plain text and encryption key, to produce ciphertext. 4) Decryption AlgorithmIt is an opposite process of an encryption algorithm; it converts cipher text into plain text using the decryption key. It takes two inputs, i.e. ciphertext and decryption key, to produce plain text. 5) Encryption KeyIt is a key which sender used to convert plain text into ciphertext. 6) Decryption KeyIt is a Key which the receiver uses to convert ciphertext into plain text. Types of CryptosystemsThere are two types of Cryptosystems – Symmetric Key encryption and Asymmetric key encryption. Let’s Discuss these two types in detail. 1) Symmetric Key Encryption
In the below picture, we can see the working of Symmetric key encryption. Features of cryptosystem in case of Symmetric-key encryption:-
Challenges for symmetric key encryption-
2) Asymmetric key encryptionIn asymmetric key encryption, two different keys are used by the sender and the receiver for encryption and decryption processes. Asymmetric key encryption is also known as public-key encryption. In the above picture, we can see how asymmetric key encryption works.
ConclusionThis article has seen how cryptosystem helps encrypt and decrypt messages securely and conveniently. Recommended ArticlesThis has been a guide to Cryptosystems. Here we discussed a brief overview with its components and types and a proper block diagram, respectively. You can also go through our other suggested articles to learn more –
What components make up a cryptosystem?A basic cryptosystem includes the following components:. Plaintext- This is the data that needs to be protected.. Encryption algorithm- This is the mathematical algorithm that takes plaintext as the input and returns ciphertext. ... . Ciphertext- This is the encrypted, or unreadable, version of the plaintext.. What are the 3 major components of encryption system?Security in Wireless Systems
The main components of an encryption system are: (1) plaintext (not encrypted message), (2) encryption algorithm (works like a locking mechanism to a safe), (3) key (works like the safe's combination), and (4) ciphertext (produced from plaintext message by encryption key).
What are the main components of cryptology?Cryptology consists of two parts: cryptography, which is the science of encryption algorithms and their use; and cryptanalysis, which is the science of deriving encryption keys or otherwise decrypting a message by the study of the encrypted message.
What are the types of cryptosystems?There are two types of Cryptosystems – Symmetric Key encryption and Asymmetric key encryption.
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