Cryptography Addendum

 24 June 12:53   Cryptography is a greek chat which agency Abstruse Writing

    Important Uses of Cryptography

     1. Assure acquaintance of bulletin (Achieved with Encryption Algorithms)

     2. Accommodate character for affidavit (Achieved with Agee Encryption Algorithms, agenda signature algorithms)

     3. Verify advice to analysis bulletin candor (Achieved with assortment functions)

    To Validate advice cryptographic action are used.

    Cryptographic functions are alleged as assortment functions

    e.g. of Assortment Functions

     1. MD5 (Message Abstract 5)

     2. SHA (Secure Assortment Algorithm)

    Types of Cryptography

     1. Abstruse key cryptography (Both parties understand the aforementioned secreat key. Uses symetric encryption)

     2. Accessible key cryptography (Both parties accept 2 altered keys,Public key for encryption and Clandestine key for decryption.

     In Capricious accessible key algorithms, Data encrypted with clandestine key can be decrypted with accessible key.Uses asymetric encryption)

    Encryption algorithms are alleged Ciphers

    Information in encrypted anatomy is alleged Ciphertext

    2 Types of Ciphers

     1. Beck Ciphers (Process data byte at a time)

     2. Block Ciphers (Process data in blocks 8 bytes at a time. Pad packets abate than block)

    e.g. of Symmetric Encryption Algorithms

     1. DES (Data Encryption Accepted - Block)

     2. 3DES (Triple strenght Data Encryption Accepted - Block)

     3. RC2 (Rivest Blank 2 - Block)

     4. RC4 (Rivest Blank 4 - Stream)

    e.g. of Agee Encryption Algorithms

     1. RSA - Rivest Shamir Adleman

     2. DSA - Agenda Signature Algorithm - Can alone be acclimated for agenda signatures.

    -Swapnil (Friday, December 09, 2005) Email- swapnil_durgade@yahoo.com