Introduction to Encryption

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Questions and Answers

Match the encryption terms with their definitions:

Ciphertext = Encrypted data that is unreadable without a key Plaintext = Unencrypted data that is understandable Encryption = The process of disguising a message Decryption = The process of converting ciphertext back to plaintext

Match the applications with their use of encryption:

Web servers and browsers = Safely exchanging data ATMs = Withdrawing cash securely Secure emails = Sending confidential information Messaging apps = Exchanging secure messages

Match the elements of the encryption process with their roles:

Sender = Encrypts the data before transmission Recipient = Decrypts the data after receiving it Key = Used to encrypt and decrypt data Cipher = The algorithm used to encrypt data

Match the terms with their related concepts in encryption:

<p>Key = Critical element for disguising messages Ciphertext = Data that appears as gibberish Secure communication = Protection for online data exchanges Encryption process = Steps involved in making data unreadable</p> Signup and view all the answers

Match the type of digital data with its encryption context:

<p>Data files = Sent securely online Messages = Exchanged via mobile apps Emails = Sent with confidentiality Cash withdrawals = Secure from unauthorized access</p> Signup and view all the answers

Flashcards

Encryption

The process of disguising a message to make it unreadable to those without the decryption key.

Ciphertext

The unreadable, disguised version of a message after encryption.

Plain text

The original, readable form of a message before encryption.

Encryption key

A special piece of information used to encrypt and decrypt data.

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Decryption

Making encrypted data readable again by using the decryption key.

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Study Notes

Encryption

Encryption disguises a message, making it understandable only by specific people.
Encryption uses a key to explain how the message is hidden.
Encrypted data is called ciphertext; unencrypted data is called plain text.
Most communication and business online use encryption.
Encryption helps safely exchange data between web servers and browsers.
It's used for withdrawing cash from ATMs, sending secure emails, and sharing online files, photos, and videos.
Encryption keeps messages private among friends and family through messenger apps.
Encryption hides data while it's stored or sent. However, it does not prevent someone from reading the message; instead, it stops them from understanding it.