Podcast
Questions and Answers
Which of the following is a primary goal of cryptography?
Which of the following is a primary goal of cryptography?
- Data Compression
- Error Correction
- Increase processing speed
- Protecting information confidentiality (correct)
What is a VPN primarily utilized for?
What is a VPN primarily utilized for?
- Reducing the cost of internet services
- Creating a secure connection over a network (correct)
- Playing online games
- Increasing computer processing speed
In cryptography, what does integrity ensure?
In cryptography, what does integrity ensure?
- Data is compressed efficiently
- Data transmission is faster
- Data remains unchanged and reliable (correct)
- Data can be accessed quickly
What is the purpose of authentication in cryptographic services?
What is the purpose of authentication in cryptographic services?
What is symmetric encryption?
What is symmetric encryption?
Which of the following is a characteristic of asymmetric encryption?
Which of the following is a characteristic of asymmetric encryption?
What is the purpose of hashing?
What is the purpose of hashing?
Which of the following is a method for peer authentication?
Which of the following is a method for peer authentication?
What is the main goal of key management in cryptography?
What is the main goal of key management in cryptography?
What is the purpose of a digital certificate?
What is the purpose of a digital certificate?
Which of these is a service provided by cryptography?
Which of these is a service provided by cryptography?
What does IPSec do?
What does IPSec do?
What is a man-in-the-middle attack?
What is a man-in-the-middle attack?
In asymmetric encryption, what is the private key used for?
In asymmetric encryption, what is the private key used for?
What is the purpose of a Certificate Authority (CA)?
What is the purpose of a Certificate Authority (CA)?
Which algorithm falls under the category of hashing algorithm?
Which algorithm falls under the category of hashing algorithm?
What is the weakness of symmetric encryption?
What is the weakness of symmetric encryption?
What is the main function of Diffie-Hellman?
What is the main function of Diffie-Hellman?
What is a digital signature a proof of?
What is a digital signature a proof of?
In PKI framework, where do users obtain their digital certificates?
In PKI framework, where do users obtain their digital certificates?
Cryptography focuses on securing communication through encoding.
Cryptography focuses on securing communication through encoding.
VPNs are not related to cryptography.
VPNs are not related to cryptography.
IPsec only concerns the management of cryptographic keys.
IPsec only concerns the management of cryptographic keys.
Symmetric encryption uses identical keys for encryption and decryption.
Symmetric encryption uses identical keys for encryption and decryption.
Asymmetric encryption is exclusive to local networks.
Asymmetric encryption is exclusive to local networks.
Authentication confirms data integrity but not the sender's identity.
Authentication confirms data integrity but not the sender's identity.
Data integrity ensures that information remains unaltered during transit or storage.
Data integrity ensures that information remains unaltered during transit or storage.
Confidentiality involves making data publicly accessible.
Confidentiality involves making data publicly accessible.
Key management is a simple process.
Key management is a simple process.
Public key cryptography uses one key.
Public key cryptography uses one key.
Encryption transforms plaintext into ciphertext.
Encryption transforms plaintext into ciphertext.
Hashing creates the original plain text from cipher text.
Hashing creates the original plain text from cipher text.
HMAC authenticates a message using a secret key.
HMAC authenticates a message using a secret key.
MD5 is more secure than SHA-256.
MD5 is more secure than SHA-256.
A digital certificate proves the bond between a public key and its owner.
A digital certificate proves the bond between a public key and its owner.
Confidentiality is achieved when data is altered during transmission.
Confidentiality is achieved when data is altered during transmission.
Encryption is an example of a CIA service used for integrity.
Encryption is an example of a CIA service used for integrity.
Digital signatures guarantee that a signature can be reused.
Digital signatures guarantee that a signature can be reused.
In asymmetric encryption, the keys are identical.
In asymmetric encryption, the keys are identical.
Diffie-Hellman key exchange ensures secure key exchange.
Diffie-Hellman key exchange ensures secure key exchange.
Flashcards
Cryptography
Cryptography
Used to protect the integrity, confidentiality, and authentication of data.
Confidentiality
Confidentiality
Ensures that data is only accessible to authorized parties.
Authentication
Authentication
Verifies the source of the data and confirms that it has not been altered
Integrity
Integrity
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Symmetric Encryption
Symmetric Encryption
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Asymmetric Encryption
Asymmetric Encryption
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Encryption Algorithms
Encryption Algorithms
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Hash Algorithms
Hash Algorithms
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Fixed-Length Hash Value
Fixed-Length Hash Value
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Authentication Code
Authentication Code
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Diffie-Hellman
Diffie-Hellman
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Digital Signature
Digital Signature
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Digital Certificate
Digital Certificate
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Certificate Authority (CA)
Certificate Authority (CA)
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PKI (Public Key Infrastructure)
PKI (Public Key Infrastructure)
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Registration Authority (RA)
Registration Authority (RA)
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Encryption
Encryption
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Peer Authentication
Peer Authentication
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Symmetric Key Encryption
Symmetric Key Encryption
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Asymmetric Key Encryption
Asymmetric Key Encryption
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Security of Hash Algorithms
Security of Hash Algorithms
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PKI Framework
PKI Framework
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Study Notes
Cryptographic Services
- A diagram illustrates how cryptographic services protect communication between Alice and Bob, involving VPNs, firewalls, IPSec, ESA/WSA, web servers, email servers, and DNS.
Confidentiality with Encryption
- An example shows Alice paying Jeremy $100, encrypting the message, and Bob decrypting it.
- An unauthorized user cannot read the encrypted message during internet transmission.
Integrity with Hashing
- An example shows Alex being paid $100 and Jeremy being paid $1000
- The hashes alter if the date is changed.
- An unauthorized user cannot change the data without being discovered.
Authentication
- An example shows Alice and Bob authenticating with their auth keys, IDs, and authenticating/computed hashes.
Section 7.5: Summary
- Cryptology areas are explained and two kinds of encryption algorithms are explained.
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