Symmetric encryption algorithms

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• Symmetric Encryption Algorithms

Block ciphers are among the most widely used types of cryptographic algorithms provide secrecy and/or authentication services in particular will introduce DES (Data Encryption Standard)

• Lecture Security + Guide to Network Security Fundamentals (2th edition) - Chapter 8: Scrambling through cryptography

Lecture Security + Guide to Network Security Fundamentals - Chapter 8 include objectives: Define cryptography, secure with cryptography hashing algorithms, protect with symmetric encryption algorithms, harden with asymmetric encryption algorithms, explain how to use cryptography.

• Internet Security

Same key is used by both parties - key is shared symmetric encryption algorithms. Algorithm used for decryption is the inverse of the algorithm used for encryption

• Module 7: Implementing VPN

What Is Needed to Build a VPN? Overlay and Peer-to-Peer VPN Architecture VPN Topologies Characteristics of a Secure VPNs VPN Security: Encapsulation VPN Security: IPsec and GRE VPN Security: Symmetric and Asymmetric Encryption Algorithms Symmetric Encryption Algorithms Asymetric Encryption Diffie-Hellman Key Exchange Data Integrity VPN Security: Authentication

• Bảo mật thông tin: Các phương pháp mã hóa - phần 1

Figure 3.1 shows the general idea behind a symmetric-key cipher. The original message from Alice to Bob is called plaintext; the message that is sent through the channel is called the ciphertext. To create the ciphertext from the plaintext, Alice uses an encryption algorithm and a shared secret key. To create the plaintext from ciphertext, Bob uses a decryption algorithm and the same secret key.

• Internet Security Cryptographic Principles, Algorithms and Protocols - Chapter 3

Symmetric Block Ciphers Chương này sẽ đề cập với một số thuật toán mật mã khối quan trọng đã được phát triển trong quá khứ. Họ là IDEA (1992), RC5 (1995), rc6 (1996), DES (1977) và AES (2001). Advanced Encryption Standard (AES) xác định một thuật toán mã hóa FIPS-phê duyệt khối đối xứng sẽ sớm đến để được sử dụng thay cho Triple DES hoặc rc6.