'Symmetric cipher' presentation slideshows

Why Computer Security

Why Computer Security. The past decade has seen an explosion in the concern for the security of information Malicious codes (viruses, worms, etc.) caused over $28 billion in economic losses in 2003 and $67 billion in 2006! Security specialists markets are expanding !

1.06k views • 106 slides

Why Computer Security

Why Computer Security. The past decade has seen an explosion in the concern for the security of information Malicious codes (viruses, worms, etc.) caused over $28 billion in economic losses in 2003 Security specialists markets are expanding !

1.07k views • 105 slides

Why Computer Security

Why Computer Security. The past decade has seen an explosion in the concern for the security of information Malicious codes (viruses, worms, etc.) caused over $28 billion in economic losses in 2003 and $67 billion in 2006! G-20 Urged to Treat Cyber-Attacks as Threat to Global Economy (2013)

938 views • 93 slides

Why Computer Security

Why Computer Security. The past decade has seen an explosion in the concern for the security of information Malicious codes (viruses, worms, etc.) caused over $28 billion in economic losses in 2003 and $67 billion in 2006! Security specialists markets are expanding !

946 views • 93 slides

Classical Encryption Techniques

Classical Encryption Techniques. CSE 651: Introduction to Network Security. Classical encryption techniques. As opposed to modern cryptography Goals: to introduce basic concepts & terminology of encryption to prepare us for studying modern cryptography. Basic terminology.

825 views • 54 slides

Classical Encryption Techniques

Classical Encryption Techniques. CSE 651: Introduction to Network Security. Classical encryption techniques. As opposed to modern cryptography Goals: to introduce basic concepts & terminology of encryption to prepare us for studying modern cryptography. Basic terminology.

628 views • 54 slides

Outline

Outline. Overview of Cryptography Symmetric Cipher Classical Symmetric Cipher Modern Symmetric Ciphers (DES and AES) Asymmetric Cipher One-way Hash Functions and Message Digest. Basic Terminology. plaintext - the original message ciphertext - the coded message

589 views • 44 slides

Security course

Security course. Jean-Roland Schuler jroland.schuler@eif.ch. Symmetric cipher. The same key is used for the encryption and decryption. Examples: DES, 3-DES, IDEA, Blowfish, RC2, RC4, RC5, RC6, AES. Block cipher: ECB Mode.

363 views • 24 slides

Spoiler Warning

323 views • 20 slides

Functionality of the RSA cipher

Functionality of the RSA cipher. CrypTool Team November 2010. Cryptography and what you need it for. Data reaches their receiver indirectly by passing between several servers. At each node, the data can be captured, read and even changed. Modern cryptography is about securing this data.

272 views • 17 slides

Applied Cryptography

Applied Cryptography. Main goal Give some practical experience on cryptographic technics used today. Show how to use existing cryptographic software. Examination: Practical assignments and written exam Homepage containg latest course information: http://www.nada.kth.se/~marten/AC /2003

400 views • 13 slides

Merkle Puzzles

Online Cryptography Course Dan Boneh. Basic key exchange. Merkle Puzzles. Key exchange without an online TTP?. Goal : Alice and Bob want shared key, unknown to eavesdropper For now: security against eavesdropping only (no tampering). Alice.

558 views • 7 slides