Visual Cryptography: Encryption and Decryption
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Visual Cryptography: Encryption and Decryption

Learn about the concept of visual cryptography, a cryptographic technique that uses visual information for encryption and decryption. Explore how a simple image can hide encrypted messages that can be decoded by the human eye, with examples provided.

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@IdolizedElectricOrgan

Questions and Answers

What is another name for asymmetric key encryption?

Public key encryption

In visual cryptography, how is a secret binary image encrypted?

It is encrypted as 2 binary images on separate transparency sheets

What does a public key in asymmetric key encryption refer to?

A widely distributed key

What is the primary purpose of visual cryptography?

<p>To present decrypted messages as visual information</p> Signup and view all the answers

What is the significance of using large prime numbers in asymmetric key encryption?

<p>To increase security by making it hard to factorize the keys</p> Signup and view all the answers

How does visual cryptography differ from conventional text-based encryption methods?

<p>It presents decrypted messages as visual information</p> Signup and view all the answers

What is the main purpose of encryption?

<p>To prevent unauthorized access to data</p> Signup and view all the answers

Which encryption technique uses the same key for both encryption and decryption?

<p>Symmetric Key Encryption</p> Signup and view all the answers

What is the main vulnerability associated with Symmetric Key Encryption?

<p>Key interception by attackers</p> Signup and view all the answers

Which encryption method is susceptible to interception due to the need for key distribution?

<p>Symmetric Key Encryption</p> Signup and view all the answers

What kind of network encryption is WPA2 commonly used for?

<p>Wireless network encryption</p> Signup and view all the answers

In Caesar Cipher, what happens to each letter or character in the plaintext?

<p>It gets shifted by a fixed number of positions</p> Signup and view all the answers

When using asymmetric key encryption, who uses their private key to decrypt the message?

<p>Alice</p> Signup and view all the answers

In asymmetric key encryption, what is the purpose of using the public key?

<p>To encrypt the message</p> Signup and view all the answers

What is the main concern of data security in computer studies?

<p>Protecting software and data from unauthorized tampering</p> Signup and view all the answers

In the context of privacy in computer studies, what is a common measure used by companies to prevent data tampering?

<p>Careful screening of job applicants</p> Signup and view all the answers

What is the purpose of visual cryptography in computer studies?

<p>Enhancing data security through image encryption techniques</p> Signup and view all the answers

How do large organizations ensure continuity in computer operations during disasters according to the text?

<p>Having disaster recovery plans</p> Signup and view all the answers

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