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Questions and Answers
What is a characteristic of symmetric encryption protocols?
What is a characteristic of symmetric encryption protocols?
Which protocol is primarily used for secure remote access to computers and networks?
Which protocol is primarily used for secure remote access to computers and networks?
Which encryption protocol is used for encrypting email communications?
Which encryption protocol is used for encrypting email communications?
What is the latest version of TLS?
What is the latest version of TLS?
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What is the primary purpose of IPSec?
What is the primary purpose of IPSec?
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What type of encryption protocol uses a pair of keys: public key for encryption and private key for decryption?
What type of encryption protocol uses a pair of keys: public key for encryption and private key for decryption?
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Study Notes
Encryption Protocols in Computer Network Security
Types of Encryption Protocols
-
Symmetric Encryption Protocols:
- Use the same key for encryption and decryption
- Examples: AES (Advanced Encryption Standard), DES (Data Encryption Standard)
-
Asymmetric Encryption Protocols:
- Use a pair of keys: public key for encryption and private key for decryption
- Examples: RSA (Rivest-Shamir-Adleman), Elliptic Curve Cryptography (ECC)
Secure Sockets Layer/Transport Layer Security (SSL/TLS)
-
SSL (Secure Sockets Layer):
- Developed by Netscape in 1994
- Replaced by TLS in 1999
-
TLS (Transport Layer Security):
- Latest version: TLS 1.3 (2018)
- Provides end-to-end encryption for web communications
Other Encryption Protocols
-
IPSec (Internet Protocol Security):
- Used for end-to-end encryption of IP packets
- Supports both AH (Authentication Header) and ESP (Encapsulating Security Payload) protocols
-
PGP (Pretty Good Privacy):
- Used for encrypting email communications
- Uses a combination of symmetric and asymmetric encryption
-
SSH (Secure Shell):
- Used for secure remote access to computers and networks
- Supports encryption, authentication, and secure file transfer
Types of Encryption Protocols
- Symmetric Encryption Protocols use the same key for encryption and decryption, with examples including AES (Advanced Encryption Standard) and DES (Data Encryption Standard).
- Asymmetric Encryption Protocols use a pair of keys: a public key for encryption and a private key for decryption, with examples including RSA (Rivest-Shamir-Adleman) and Elliptic Curve Cryptography (ECC).
Secure Sockets Layer/Transport Layer Security (SSL/TLS)
History of SSL/TLS
- SSL (Secure Sockets Layer) was developed by Netscape in 1994.
- SSL was replaced by TLS in 1999.
Features of TLS
- The latest version of TLS is TLS 1.3, released in 2018.
- TLS provides end-to-end encryption for web communications.
Other Encryption Protocols
IPSec
- IPSec (Internet Protocol Security) is used for end-to-end encryption of IP packets.
- IPSec supports both AH (Authentication Header) and ESP (Encapsulating Security Payload) protocols.
PGP
- PGP (Pretty Good Privacy) is used for encrypting email communications.
- PGP uses a combination of symmetric and asymmetric encryption.
SSH
- SSH (Secure Shell) is used for secure remote access to computers and networks.
- SSH supports encryption, authentication, and secure file transfer.
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Description
Understand the types of encryption protocols used in computer network security, including symmetric and asymmetric encryption protocols. Learn about examples such as AES, DES, RSA, and ECC.
