![]() ![]() Design issue The design philosophy behind the algorithm is one of mixing operation from different algebraic groups Lets take a look which different operations are used. Like this 48 keys and in last round another 4 keys (6 * 8 = 48 + 4 =52 total) are being used in both the encryption and decryption process. Number of identical rounds are 8 where in each round 6 keys are used. And it is divided in 52 sub keys (how? Thhat we will see in next slide.) Cipher text is also as same as plain text in size that is of 64 bit. Basic idea about IDEA Here Plain text is of 64 bit. It is developed at ETH(Eidgenossische Technische Hochschule) in Zurich, Switzerland in 1990. IDEA was used in Pretty Good Privacy (PGP) v2.0. Contd It was meant to be a replacement for the Data Encryption Standard. Its patents are held by the Swiss company "Ascom-Tech AG". It was developed by Xuejia Lai and James L. History IDEA is a symmetric block cipher algorithm. ![]() IDEA International Data Encryption Algorithm Shankersinh Vaghela Bapu Institute Of Technology.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |