PPT-Dynamic Searchable Symmetric Encryption

Tom Roeder eXtreme Computing Group Microsoft Research Joint work with Seny Kamara Cloud backup Users want to back up their data The cloud provides storage Privacy integrity and confidentiality. CSE 5351: Introduction to Cryptography. Reading assignment:. Chapter 2. Chapter 3 (sections 3.1-3.4). You may skip proofs, but are encouraged to read some of them.. 2. Computational Difficulty (One-Way Functions). Name : . Maryam Mohammed . Alshami. ID:. H00204657. Encryption. : . is the process of encoding messages or information in such a way that only authorized parties can read it. .. Important part of computing to keep our file . CSE 5351: Introduction to Cryptography. Reading assignment:. Chapter 3 . Read sections 3.1-3.2 first (skipping 3.2.2). 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. Pseudorandom Generators and Stream Ciphers. via . Oblivious Access on Distributed Data Structure. Thang . Hoang. . EECS. , Oregon State . University. Corvallis, Oregon, 97331. hoangmin@eecs.oregonstate.edu. 1. Attila Altay . Yavuz. . EECS. , Oregon State . CS 161: Computer Security. Prof. . Raluca. Ada . Popa. Sept 13, 2016. Announcements. Project due Sept 20. Special guests. Alice . Bob. The attacker (Eve - “eavesdropper”, Malice). Sometimes Chris too. ECE/CS 498AM. University of Illinois. Client wants to outsource files to server bur retain search functionality. Client wants to:. Send all documents to server. Query the server to retrieve some document(s). Cryptography. Is:. A tremendous tool. The basis for many security mechanisms. Is not:. The solution to all security problems. Reliable unless implemented and used properly. Something you should try to invent yourself. Citation. I would like to thank Claude Crepeau for allowing me to use his slide from his crypto course to mount my course. Some of these slides are taken directly from his course. . Comp 547 at . Mcgill. Applied Cryptography. ECE/CS 498AM. University of Illinois. Searchable Encryption. 2. Server. Client. Queries w. 1. , w. 2. , …. Security: “. the server should learn nothing about the client’s files.”. Crypto Concepts Symmetric encryption, Public key encryption, and TLS Cryptography Is: A tremendous tool The basis for many security mechanisms Is not: The solution to all security problems Reliable unless implemented and used properly This brief document aims to provide guidance for the creation of searchable PDF files from scanned documents whether standard TIFF Files or Image-Only PDF files 11 What is a Searchable PDF A searchabl P. ublic-key encryption ( Asymmetric Encryption). Asymmetric encryption is a form of cryptosystem in which . encryption and . decryption are performed using the different keys—one a public . key and . Symmetric . Key Distribution Using Asymmetric Encryption . Distribution . of Public Keys. Key Management and Distribution. Symmetric Key Distribution Using Symmetric Encryption. For symmetric encryption to work, the two parties to an exchange must . Techniques . Symmetric Cipher Model. Basic terminology:. Plaintext:. original message to be encrypted. Cipher text: . the encrypted message. Enciphering or encryption Algorithm: . The process of converting plaintext into cipher text..