PPT-On Compression of Data Encrypted with Block Ciphers

Demijan Klinc Carmit Hazay Ashish Jagmohan Hugo Krawczyk Tal Rabin Georgia Institute of Technology IBM TJ Watson Research Labs . Rice ELEC 528/ COMP 538 . Farinaz Koushanfar. Spring 2009. 2. Summary. Substitution ciphers. Permutations. Making good ciphers . DES. AES. Slides are courtesy of Leszek T. Lilien from WMich. http://www.cs.wmich.edu/~llilien/. Presented by. Tenglu Liang. Tai Liu. Motivation . Web application use servers to store and process confidential information.. Problems. Anyone who gains access to the server can obtain all of the data stored there.. The data encryption standard (DES). Online Cryptography Course Dan Boneh. Block ciphers: crypto work horse. E, D. CT Block. n. bits. PT Block. n. bits. Key. k Bits. Annie . Yang and Martin Burtscher*. Department of Computer Science. Highlights. MPC compression algorithm. Brand-new . lossless . compression algorithm for single- and double-precision floating-point data. Symmetric ciphers . 2. part 1. Block ciphers - definition. Block cipher . encipherment . provides confidentiality by transforming a plaintext message into a ciphertext message, by means of a special function.. 2-D Warping and Block Matching. Shinjini. . Kundu. Anand. . Kamat. . Tarcar. EE398A Final Project. 1. EE398A - Compression of Light Fields using 2-D Warping and Block Matching. Outline. Motivation and . Online Cryptography Course Dan Boneh. Block ciphers: crypto work horse. E, D. CT Block. n. bits. PT Block. n. bits. Key. k . bits. Canonical examples:. 3DES: n= 64 bits, k = 168 bits. The . Importance. of Email in Business. Email is still the number one communications tool across all industries. Workers spend 152 minutes per day on email. Worldwide email accounts are projected to increase from over 2.9 billion in 2010, to over 3.8 billion by 2014. David . Brumely. Carnegie Mellon University. Credits:. Slides originally designed by David . Brumley. . . Many. other slides are from Dan . Boneh’s. June 2012 . Coursera. . crypto class.. What is a block cipher?. David . Brumely. Carnegie Mellon University. Credits:. Slides originally designed by David . Brumley. . . Many. other slides are from Dan . Boneh’s. June 2012 . Coursera. . crypto class.. What is a block cipher?. DES, AES . TEK4500. 01.09.2020 . Håkon Jacobsen. hakon.jacobsen@its.uio.no. Ideal solution: secure channels. 2. Internet. Alice. Bob. M. Adversary. Security goals:. Data privacy: . adversary should not be able to read message M . To compress or decompress – that is this session!. Melissa Connors. Melissa Connors. Senior Technical Writer / Special Projects Lead. Dog person / Befriender of chipmunks / Reader of books / Baker of cakes. is a . lossy compression. method used to . compress images. using . fractals. . The method is best suited for photographs of natural scenes (. trees. , . mountains. , . ferns. , . clouds. ). The fractal compression technique relies on the fact that in certain images, parts of the image resemble other parts of the same image.. Slides Original Source:. M. Stamp, “Information Security: Principles and Practice,” John Wiley. C. . Paar. and J. Pelzl, “Understanding Cryptography – A Textbook for Students and Practitioners,” .