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Crypto or cryptography or cryptology is the practice and study of techniques for secure communication in the presence of third parties called adversaries. These adversaries are often referred to as Eve in cryptography, while the sender and recipient of messages are called Alice and Bob respectively. More generally, cryptography is about constructing and analyzing protocols that prevent third parties or the public from reading private messages; various aspects in information security such as data confidentiality, data integrity, authentication, and non-repudiation are central to modern cryptography. Modern cryptography exists at the intersection of the disciplines of mathematics, computer science, and electrical engineering. Applications of cryptography include ATM cards, computer passwords, and electronic commerce.

We desire to give you a wide range of knowledge about cryptography including tutorial lesson and some useful tools that are used nowadays. 

At this time, we provide

- Hash generator tools

- HTTP testing tools

- Tutorial in crypto, include these topics:

 + Basics of Cryptography

 + Conventional cryptography

 + Key management and conventional encryption

 + Keys

 + Pretty Good Privacy

 + Digital signatures

 + Digital certificates

 + The OSI Security Architecture

 + Network Security

 + Types of attacks

 + Denial of service attack

 + Smurf Attack

 + Distributed Denial of Service Attacks

 + Security Mechanism

 + A Model for Network Security

 + Symmetric Ciphers

 + Classical SubstitutionTechniques

 + Classical Transposition Techniques

 + Rotor Machines

 + Steganography

 + Block Cipher Principles

 + The Data Encryption Standard

 + Differential Cryptanalysis Attack

 + Cipher and Reverse Cipher

 + Security of DES

 + The Strength of DES

 + Differential and Linear Cryptanalysis

 + Block Cipher Design Principles

 + Finite Fields

 + The Euclidean Algorithm

 + Finite Fields of The Form GF(p)

 + Polynomial Arithmetic

 + Finite Fields Of the Form GF(2n)

 + The AES Cipher

 + Substitute Bytes Transformation

 + Evaluation Criteria For AES

 + ShiftRows Transformation

 + AddRoundKey Transformation

 + AES Key Expansion Algorithm

 + Equivalent Inverse Cipher

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 + Malicious Programs

 + The Nature of Viruses

 + Types of Viruses

 + Worms

 + Virus Countermeasures

 + Advanced Antivirus Techniques

 + Behavior-Blocking Software

 + Distributed Denial of Service Attacks

 + Constructing the Attack Network

 + Firewall Characteristics

 + Types of Firewalls

 + Firewall Configurations

 + Data Access Control

 + The Concept of Trusted Systems

 + Trojan Horse Defense

(More topics will be updated soon)

Crypto Tutorial

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