Edi fact, anxi12, cryptography
- 1. EDIFACT, ANSI ASC X12 and CRYPTOGRAPHY
- 2. EDIFACT Introduction: UN/EDIFACT (the United Nations rules for Electronic Data Interchange for Administration, Commerce and Transport) comprise a set of internationally agreed standards, directories and guidelines for the electronic interchange of structured data, between independent computerized information systems.
- 3. EDIFACT WHAT IS EDIFACT? EDIFACT is an acronym for EDI for administration, Commerce and Transport. It Co-ordinates international standardization by working through the UN/ECE (United Nations/ Economic Commission for Europe). It provides: i. An international EDI Standard ii. A set of syntax rules iii. Data elements, segments and codes iv. Messages.
- 4. ANSI ASC X12 The American National Standards Institute’s Accredited Standards Committee X12 is the accepted standard for EDI transactions in the United States. The ANSI ASC X12 committee has the mandate to develop variable length data formats for standard business transactions. With a single standard, a business has multiple functionality and only has to use one standard for each business function.
- 6. CRYPTOGRAPHY Cryptography is the science of writing in secret code and is an ancient art. In data and telecommunications , cryptography is necessary when communicating over any un-trusted medium, which includes just about any network, particularly Internet. Benefits of Cryptography: Authentication Integrity Non Repudiation Confidentiality Objectives of Cryptography: Data Integrity Authentication Non Repudiation
- 7. Types of Cryptography: 1) SECRET KEY (Symmetric) CRYPTOGRAPHY (SKC): SKC uses a single key for both encryption and decryption. 2) PUBLIC KEY (Asymmetric) CRYPTOGRAPHY (PKC): Uses Two keys, one key is for encryption and other for decryption. 3) HASH FUNCTION(One-Way cryptography): Uses a mathematical transformation to irreversibly “encrypt” information.