Chevron Left
Back to Symmetric Cryptography

Symmetric Cryptography, University of Colorado System

4.5
32 ratings
3 reviews

About this Course

Welcome to Symmetric Cryptography! Symmetric cryptography relies on shared secret key to ensure message confidentiality, so that the unauthorized attackers cannot retrieve the message. The course describes substitution and transposition techniques, which were the bases for classical cryptography when the message is encoded in natural language such as English. Then, we build on product ciphers (using both substitution and transposition/permutation) to describe modern block ciphers and review the widely used cipher algorithms in DES, 3-DES, and AES. Lastly, we enable the use of block ciphers to support variable data length by introducing different modes of block cipher operations in ECB, CBC, CFB, OFB, and CTR modes. This course is cross-listed and is a part of the two specializations, the Applied Cryptography specialization and the Introduction to Applied Cryptography specialization....
Filter by:

3 Reviews

By Mohamed Tawfik

Jun 19, 2018

Excellent course

By M M SRAVANI

Mar 31, 2018

Reviewing assignment is no one is there

By CHITTILLA VENKATA VISWANATH

Jan 18, 2018

Excellent course