1 / 42

History and Background

Why is History Important?. Most modern encryption algorithms based on concepts hundreds/thousands of years oldMost attacks on encryption also very oldExhaustive searchCryptographic analysis. Substitution Algorithms. Mapping of plaintext to ciphertextCan be single character mapping (historical)

loe
Download Presentation

History and Background

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


    1. History and Background CSIS 5857: Encoding and Encryption

    2. Why is History Important? Most modern encryption algorithms based on concepts hundreds/thousands of years old Most attacks on encryption also very old Exhaustive search Cryptographic analysis

    3. Substitution Algorithms Mapping of plaintext to ciphertext Can be single character mapping (historical) A ? G Can map entire blocks of plaintext (modern block ciphers) 1001011001111100 ? 0110101011100011

More Related