Key-Policy Attribute-Based Encryption
|
|
|
- Timothy Griffin
- 6 years ago
- Views:
Transcription
1 Key-Policy Attribute-Based Encryption Present by Xiaokui Shu 09/08/2011
2 Identity-Based Encryption Basic KP-ABE Secret-Sharing Scheme Fine-grained Access Control Application Scenario Advanced Topics Related Work 2
3 Application Introduction How to share encrypted data? Alice decrypt data for Bob Alice give its key to Bob Bob Alice 3
4 Application Introduction Dep: CS Group: Admin Dep: CS Group: Admin Bob Alice Eve Dep: ECE Group: Admin 4
5 Application: Audit Log Log need to be encrypted Cannot be known to everyone Collaborative forensic analysis Someone need to known it Someone is not fixed Attributes User name Permitted time 5
6 Application: Targeted Broadcast Scenario A broadcaster broadcasts different items Each user is subscribed to a different package Broadcast Encryption Schemes Encrypting to an arbitrary subset of users Efficiency dependents on the size of users Attributes E.g. sports, news, financial 6
7 Secret-Sharing Scheme ABE is not enough. Fine-grained access control needed. 7
8 Key-Policy Attribute-Based Encryption Ts == 2 d admin time CIA spec Alice Bob Pro. OR OR CS copro 8
9 All You Need to Know About KP-ABE KP-ABE IBE SSS Tree Secret-Sharing Scheme Fine-grained Access Control 9
10 Cite from Extract Click to edit Master title style Identity-based Encryption Private Key Generator (PKG) master-key Setup k ID params ID Receiver d ID Decrypt C Encrypt M M Sender Fall, Privacy&Security 10 - Virginia Tech Computer Science
11 Key-Policy Attribute-Based Encryption :: IBE Key Generation masterkey Setup k A Key Generator att params s d Receiv er Decrypt C Encrypt att M M Sender Fall, Privacy&Security 11 - Virginia Tech Computer Science
12 Secret-Sharing Scheme Play with math. 12
13 Bilinear map 13
14 Public parameters Click to edit Master title style Identity-Based Encryption Encryption Decryption Key to each attribute Secret Clue 14
15 Public parameters Click to edit Master title style Identity-Based Encryption Encryption Decryption 15
16 Secret-Sharing Scheme 16
17 SSS Tree Secret of lower level is share of higher level 17
18 Secret-Sharing Scheme 18
19 Secret-Sharing Scheme Output: leaves Output: current node 19
20 Secret-Sharing Scheme AND, OR and Threshold n: number of children of a node k: number of shares to unlock a secret of a node AND: k == n OR: k == 1 Threshold: k > 1 && k < n Leaf: k == 1 20
21 Secret-Sharing Scheme Sketch is done. 21
22 Advanced Topics: Security Collusion CS, admin ECE, dean CS, dean? 22
23 Advanced Topics: Security Collusion resistance not set, but access tree OR AND AND ECE dean CS admin 23
24 Advanced Topics: Large Universe Construction From limited attributes to any arbitrary strings Unchanged: Setup, Encryption Modified: Key Generation, Decryption 24
25 Advanced Topics: Delegation of Private Keys 25
26 Advanced Topics: Delegation of Private Keys 26
27 Advanced Topics: Delegation of Private Keys Manipulations Adding a new trivial gate to T blue-green -> blue-red-green with 0-degree poly Manipulating an existing (t, n)-gate Converting a (t, n)-gate to a (t + 1, n)-gate Converting a (t, n)-gate to a (t + 1, n + 1)-gate Converting a (t, n)-gate to a (t, n-1)-gate Re-randomizing the obtained key New random poly The given set of operations is complete 27
28 Related Work: CP-ABE KP-ABE ciphertexts are associated with sets of attributes user secret keys are associated with policies CP-ABE user keys are associated with sets of attributes ciphertexts are associated with policies 28
29 Secret-Sharing Scheme Thank you! 29
30 Advanced Topics: Security Decisional Bilinear Diffie-Hellman Assumption 30
31 Advanced Topics: Delegation of Private Keys Manipulations details Adding a new trivial gate to T Converting a (t, n)-gate to a (t + 1, n)-gate Converting a (t, n)-gate to a (t + 1, n + 1)-gate Converting a (t, n)-gate to a (t, n-1)-gate 31
Ciphertext-Policy Attribute-Based Encryption (CP-ABE)
Ciphertext-Policy Attribute-Based Encryption (CP-ABE) Presented by Sherley Codio Fall, 2011 - Privacy&Security - Virginia Tech Computer Science Application Scenario Sharing data on distributed systems
Spatial Encryption. March 17, Adam Barth, Dan Boneh, Mike Hamburg
Adam Barth Dan Boneh Mike Hamburg March 17, 2008 Traditional Public-Key Infrastructure CA Alice Bob Traditional Public-Key Infrastructure CA PK Bob, proof of identity Alice Bob Traditional Public-Key Infrastructure
Secure Data Sharing in Cloud Computing: Challenges and Research Directions
Cyber Summer School Melbourne, 12-13 Feb 2018 Secure Data Sharing in Cloud Computing: Challenges and Research Directions Willy Susilo Institute of Cybersecurity and Cryptology School of Computing and Information
A compact Aggregate key Cryptosystem for Data Sharing in Cloud Storage systems.
A compact Aggregate key Cryptosystem for Data Sharing in Cloud Storage systems. G Swetha M.Tech Student Dr.N.Chandra Sekhar Reddy Professor & HoD U V N Rajesh Assistant Professor Abstract Cryptography
On the Security of Group-based Proxy Re-encryption Scheme
On the Security of Group-based Proxy Re-encryption Scheme Purushothama B R 1, B B Amberker Department of Computer Science and Engineering National Institute of Technology Warangal Warangal, Andhra Pradesh-506004,
Notes for Lecture 14
COS 533: Advanced Cryptography Lecture 14 (November 6, 2017) Lecturer: Mark Zhandry Princeton University Scribe: Fermi Ma Notes for Lecture 14 1 Applications of Pairings 1.1 Recap Consider a bilinear e
Attribute-based encryption with encryption and decryption outsourcing
Edith Cowan University Research Online Australian Information Security Management Conference Conferences, Symposia and Campus Events 2014 Attribute-based encryption with encryption and decryption outsourcing
Key Exchange. Secure Software Systems
1 Key Exchange 2 Challenge Exchanging Keys &!"#h%&'() & & 1 2 6(6 1) 2 15! $ The more parties in communication, the more keys that need to be securely exchanged " # Do we have to use out-of-band methods?
An Efficient Certificateless Proxy Re-Encryption Scheme without Pairing
An Efficient Certificateless Proxy Re-Encryption Scheme without Pairing Presented By: Arinjita Paul Authors: S. Sharmila Deva Selvi, Arinjita Paul, C. Pandu Rangan TCS Lab, Department of CSE, IIT Madras.
Outline. Data Encryption Standard. Symmetric-Key Algorithms. Lecture 4
EEC 693/793 Special Topics in Electrical Engineering Secure and Dependable Computing Lecture 4 Department of Electrical and Computer Engineering Cleveland State University wenbing@ieee.org Outline Review
CIS 700/002 : Special Topics : Secure MQTT for IoT
CIS 700/002 : Special Topics : Secure MQTT for IoT Sangdon Park CIS 700/002: Security of EMBS/CPS/IoT Department of Computer and Information Science School of Engineering and Applied Science University
CS 161 Computer Security
Popa & Wagner Spring 2016 CS 161 Computer Security Discussion 5 Week of February 19, 2017 Question 1 Diffie Hellman key exchange (15 min) Recall that in a Diffie-Hellman key exchange, there are values
UNIT - IV Cryptographic Hash Function 31.1
UNIT - IV Cryptographic Hash Function 31.1 31-11 SECURITY SERVICES Network security can provide five services. Four of these services are related to the message exchanged using the network. The fifth service
Security Weaknesses of an Anonymous Attribute Based Encryption appeared in ASIACCS 13
Security Weaknesses of an Anonymous Attribute Based Encryption appeared in ASIACCS 13 Payal Chaudhari, Manik Lal Das, Anish Mathuria DA-IICT, Gandhinagar, India {payal chaudhari, maniklal das, anish mathuria}@daiict.ac.in
Lecture 20: Public-key Encryption & Hybrid Encryption. Public-key Encryption
Lecture 20: & Hybrid Encryption Lecture 20: & Hybrid Encryption Overview Suppose there is a 2-round Key-Agreement protocol. This means that there exists a protocol where Bob sends the first message m B
Collusion-Resistant Identity-based Proxy Re-encryption
Collusion-Resistant Identity-based Proxy Re-encryption Woo Kwon Koo 1, Jung Yeon Hwang 2, and Dong Hoon Lee 1,* 1 Graduate School of Information Security, Korea University, Seoul, Korea 2 Electronics and
On the Security of an Efficient Group Key Agreement Scheme for MANETs
On the Security of an Efficient Group Key Agreement Scheme for MANETs Purushothama B R 1,, Nishat Koti Department of Computer Science and Engineering National Institute of Technology Goa Farmagudi, Ponda-403401,
INSE 6110 Midterm LAST NAME FIRST NAME. Fall 2016 Duration: 80 minutes ID NUMBER. QUESTION Total GRADE. Notes:
A INSE 6110 Midterm Fall 2016 Duration: 80 minutes LAST NAME FIRST NAME ID NUMBER QUESTION 1 2 3 4 Total GRADE Notes: 1) Calculator (non-programming) allowed, nothing else permitted 2) Each page contains
Delegation Scheme based on Proxy Re-encryption in Cloud Environment
Vol.133 (Information Technology and Computer Science 2016), pp.122-126 http://dx.doi.org/10.14257/astl.2016. Delegation Scheme based on Proxy Re-encryption in Cloud Environment You-Jin Song Department
ID-Based Encryption for Complex Hierarchies with Applications to Forward Security and Broadcast Encryption
ID-Based Encryption for Complex Hierarchies with Applications to Forward Security and Broadcast Encryption Danfeng Yao Nelly Fazio Yevgeniy Dodis Anna Lysyanskaya Abstract A forward-secure encryption scheme
Insecurity of an Dynamic User Revocation and Key Refreshing for Attribute-Based Encryption Scheme
2014 Tenth 10th International Conference on Computational Intelligence and Security Insecurity of an Dynamic User Revocation and Key Refreshing for Attribute-Based Encryption Scheme Changji Wang, Haitao
Secure Data Storage and Data Retrieval in Cloud Storage using Cipher Policy Attribute based Encryption
Indian Journal of Science and Technology, Vol 8(S9), 318 325, May 2015 ISSN (Print) : 0974-6846 ISSN (Online) : 0974-5645 DOI: 10.17485/ijst/2015/v8iS9/65600 Secure Data Storage and Data Retrieval in Cloud
ID-Based Encryption for Complex Hierarchies with Applications to Forward Security and Broadcast Encryption
ID-Based Encryption for Complex Hierarchies with Applications to Forward Security and Broadcast Encryption ABSTRACT Danfeng Yao Dept. of Computer Science Brown University Providence, RI 02912 dyao@cs.brown.edu
Ref:
Cryptography & digital signature Dec. 2013 Ref: http://cis.poly.edu/~ross/ 2 Cryptography Overview Symmetric Key Cryptography Public Key Cryptography Message integrity and digital signatures References:
Hiding software components using functional encryption. Janek Jochheim
Hiding software components using functional encryption by Janek Jochheim Fakultät für Elektrotechnik, Informatik und Mathematik Heinz Nixdorf Institut und Institut für Informatik Fachgebiet Softwaretechnik
Elements of Cryptography and Computer and Networking Security Computer Science 134 (COMPSCI 134) Fall 2016 Instructor: Karim ElDefrawy
Elements of Cryptography and Computer and Networking Security Computer Science 134 (COMPSCI 134) Fall 2016 Instructor: Karim ElDefrawy Homework 2 Due: Friday, 10/28/2016 at 11:55pm PT Will be posted on
Efficient Generation of Linear Secret Sharing. Scheme Matrices from Threshold Access Trees
Efficient Generation of Linear Secret Sharing 1 Scheme Matrices from Threshold Access Trees Zhen Liu, Zhenfu Cao, and Duncan S. Wong Abstract Linear Secret Sharing Scheme (LSSS) matrices are commonly used
Public Key Broadcast Encryption
Public Key Broadcast Encryption Leyou Zhang Centre for Computer and Information Security University of Wollongong Australia 1 Nature Science Foundation(NSF) of China: Public key Broadcast Encryption(BE)(Finished,2010-2012)
An Efficient Verifiable Multi-Authority Secret Access control scheme in Cloud Storage M.Sreelakshmi & P.Gangadhara
An Efficient Verifiable Multi-Authority Secret Access control scheme in Cloud Storage M.Sreelakshmi & P.Gangadhara 1 M.Tech, Dept of CSE,Shri Shirdi Sai Institute of Science and Engineering, Affiliated
ECE 646 Lecture 3. Key management
ECE 646 Lecture 3 Key management Required Reading Stallings, Cryptography and Network Security: Principles and Practice, 5/E or 6/E Chapter 14 Key Management and Distribution Using the same key for multiple
Remove Key Escrow from The Identity-Based Encryption System
Remove Key Escrow from The Identity-Based Encryption System Zhaohui Cheng@mdx.ac.uk Abstract Key escrow is an inherent property in the current proposed Identity- Based Encryption (IBE) systems. However
Keywords: Multi-authority attribute based encryption, key policy, ciphertext policy, central authority free
Computing and Informatics, Vol. 35, 2016, 128 142 SIMPLE MULTI-AUTHORITY ATTRIBUTE-BASED ENCRYPTION FOR SHORT MESSAGES Viktória I. Villányi Department of Operations Research ELTECRYPT Research Group Eötvös
Publicly Verifiable Secret Sharing for Cloud-based Key Management
Publicly Verifiable Secret Sharing for Cloud-based Key Management Roy D Souza, David Jao, Ilya Mironov and Omkant Pandey Microsoft Corporation and University of Waterloo December 13, 2011 Overview Motivation:
Inter-Domain Identity-based Authenticated Key Agreement Protocol from the Weil Pairing
Inter-Domain Identity-based Authenticated Key Agreement Protocol from the Weil Pairing Tsai, Hong-Bin Chiu, Yun-Peng Lei, Chin-Laung Dept. of Electrical Engineering National Taiwan University July 10,
An IBE Scheme to Exchange Authenticated Secret Keys
An IBE Scheme to Exchange Authenticated Secret Keys Waldyr Dias Benits Júnior 1, Routo Terada (Advisor) 1 1 Instituto de Matemática e Estatística Universidade de São Paulo R. do Matão, 1010 Cidade Universitária
Group-based Proxy Re-encryption Scheme Secure against Chosen Ciphertext Attack
International Journal of Network Security, Vol.8, No., PP.266 270, May 2009 266 Group-based Proxy Re-encryption Scheme Secure against Chosen Ciphertext Attack Chunbo Ma and Jun Ao (Corresponding author:
Implementation of IBE with Outsourced Revocation technique in Cloud Computing
Implementation of IBE with Outsourced Revocation technique in Cloud Computing M.MOHANRAO, POCKLA PAVANI Assistant Professor, M.TECH STUDENT Dept of CSE,Megha Institute of Engineering & Technology For womens,edulabad,ghatkesar
Introduction to Cryptography in Blockchain Technology. December 23, 2018
Introduction to Cryptography in Blockchain Technology December 23, 2018 What is cryptography? The practice of developing protocols that prevent third parties from viewing private data. Modern cryptography
Diffie-Hellman. Part 1 Cryptography 136
Diffie-Hellman Part 1 Cryptography 136 Diffie-Hellman Invented by Williamson (GCHQ) and, independently, by D and H (Stanford) A key exchange algorithm o Used to establish a shared symmetric key Not for
Homework 1 CS161 Computer Security, Spring 2008 Assigned 2/4/08 Due 2/13/08
Homework 1 CS161 Computer Security, Spring 2008 Assigned 2/4/08 Due 2/13/08 This homework assignment is due Wednesday, February 13 at the beginning of lecture. Please bring a hard copy to class; either
Dr. Jinyuan (Stella) Sun Dept. of Electrical Engineering and Computer Science University of Tennessee Fall 2010
CS 494/594 Computer and Network Security Dr. Jinyuan (Stella) Sun Dept. of Electrical Engineering and Computer Science University of Tennessee Fall 2010 1 Public Key Cryptography Modular Arithmetic RSA
Key Exchange. References: Applied Cryptography, Bruce Schneier Cryptography and Network Securiy, Willian Stallings
Key Exchange References: Applied Cryptography, Bruce Schneier Cryptography and Network Securiy, Willian Stallings Outlines Primitives Root Discrete Logarithm Diffie-Hellman ElGamal Shamir s Three Pass
CS 161 Computer Security
Raluca Popa Spring 2018 CS 161 Computer Security Homework 2 Due: Wednesday, February 14, at 11:59pm Instructions. This homework is due Wednesday, February 14, at 11:59pm. No late homeworks will be accepted.
Oblivious Transfer(OT)
Oblivious Transfer(OT) Abhishek Gunda, 14807257 Bhargav Reddy, 14468 Sai Harsha Nalluru, 14408 Prof. Shashank Singh, IIT Kanpur April 4, 2018 April 4, 2018 1 / 20 Overview What is Oblivious Transfer Variants
CSC 774 Advanced Network Security
CSC 774 Advanced Network Security Topic 5 Group Key Management Dr. Peng Ning CSC 774 Adv. Net. Security 1 Group Communication A group consists of multiple members Messages sent by one sender are received
Collusion-Resistant Group Key Management Using Attributebased
Collusion-Resistant Group Key Management Using Attributebased Encryption Presented by: Anurodh Joshi Overview of the Paper Presents a ciphertext-policy attribute-based encryption (CP-ABE) scheme to solve
Alice in Cyber world
Alice in Cyber world Protecting Secrets in The Connected World K.S.Sreedharan Director IT Zoho Cast Alice Claude Eve Bob Govan Story So Far Symmetric Key Asymmetric Key Twist in the Tale Claude Convenience
CSC 5930/9010 Modern Cryptography: Public Key Cryptography
CSC 5930/9010 Modern Cryptography: Public Key Cryptography Professor Henry Carter Fall 2018 Recap Number theory provides useful tools for manipulating integers and primes modulo a large value Abstract
Winter 2018 CS134: Computer and Network Security Homework 2 Due: 02/26/18, 11:59pm
Winter 2018 CS134: Computer and Network Security Homework 2 Due: 02/26/18, 11:59pm Full Name: UCI ID Number: Sources: Guidelines: Use any word processor. Write your Name, UCInetID and Student ID on each
EEC-484/584 Computer Networks
EEC-484/584 Computer Networks Lecture 23 wenbing@ieee.org (Lecture notes are based on materials supplied by Dr. Louise Moser at UCSB and Prentice-Hall) Outline 2 Review of last lecture Introduction to
CSC 474/574 Information Systems Security
CSC 474/574 Information Systems Security Topic 2.5 Public Key Algorithms CSC 474/574 Dr. Peng Ning 1 Public Key Algorithms Public key algorithms covered in this class RSA: encryption and digital signature
Lecture 7.1: Private-key Encryption. Lecture 7.1: Private-key Encryption
Private-key Encryption Alice and Bob share a secret s {0, 1} n Private-key Encryption Alice and Bob share a secret s {0, 1} n Encryption and Decryption algorithms are efficient Private-key Encryption Alice
Introduction to Cryptography Lecture 7
Introduction to Cryptography Lecture 7 El Gamal Encryption RSA Encryption Benny Pinkas page 1 1 Public key encryption Alice publishes a public key PK Alice. Alice has a secret key SK Alice. Anyone knowing
Cryptography. Submitted to:- Ms Poonam Sharma Faculty, ABS,Manesar. Submitted by:- Hardeep Gaurav Jain
Cryptography Submitted to:- Ms Poonam Sharma Faculty, ABS,Manesar Submitted by:- Hardeep Gaurav Jain Cryptography Cryptography, a word with Greek origins, means "secret writing." However, we use the term
CS 425 / ECE 428 Distributed Systems Fall 2017
CS 425 / ECE 428 Distributed Systems Fall 2017 Indranil Gupta (Indy) Dec 5, 2017 Lecture 27: Security All slides IG Security Threats Leakage Unauthorized access to service or data E.g., Someone knows your
TECHNISCHE UNIVERSITEIT EINDHOVEN Faculty of Mathematics and Computer Science Exam Cryptology, Tuesday 31 October 2017
Faculty of Mathematics and Computer Science Exam Cryptology, Tuesday 31 October 2017 Name : TU/e student number : Exercise 1 2 3 4 5 6 total points Notes: Please hand in this sheet at the end of the exam.
Chapter 9. Public Key Cryptography, RSA And Key Management
Chapter 9 Public Key Cryptography, RSA And Key Management RSA by Rivest, Shamir & Adleman of MIT in 1977 The most widely used public-key cryptosystem is RSA. The difficulty of attacking RSA is based on
Security. Alessandro Margara Slides based on previous work by Matteo Migliavacca and Alessandro Sivieri
Security Alessandro Margara alessandro.margara@polimi.it Slides based on previous work by Matteo Migliavacca and Alessandro Sivieri Why security in a DS course? Sharing of resources is the motivating factor
EFFICIENT REVOCATION AND SECURE ATTRIBUTE-BASED PROXY RE-ENCRYPTION SCHEME
EFFICIENT REVOCATION AND SECURE ATTRIBUTE-BASED PROXY RE-ENCRYPTION SCHEME MAHESH S. GUNJAL 1, Dr. B. L. GUNJAL 2 1PG Student, Dept. of Computer Engineering, AVCOE, Maharashtra, India 2Associate Professor,
2.1 Basic Cryptography Concepts
ENEE739B Fall 2005 Part 2 Secure Media Communications 2.1 Basic Cryptography Concepts Min Wu Electrical and Computer Engineering University of Maryland, College Park Outline: Basic Security/Crypto Concepts
Cryptographic Systems
CPSC 426/526 Cryptographic Systems Ennan Zhai Computer Science Department Yale University Recall: Lec-10 In lec-10, we learned: - Consistency models - Two-phase commit - Consensus - Paxos Lecture Roadmap
Public Key Algorithms
Public Key Algorithms 1 Public Key Algorithms It is necessary to know some number theory to really understand how and why public key algorithms work Most of the public key algorithms are based on modular
Attribute-Based Authenticated Key Exchange
1 / 22 Attribute-Based Authenticated Key Exchange Choudary Gorantla, Colin Boyd and Juan González Nieto ACISP 2010 2 / 22 Outline Introduction 1 Introduction 2 3 4 3 / 22 Outline Introduction 1 Introduction
CS 161 Computer Security
Popa & Wagner Spring 2016 CS 161 Computer Security Midterm 2 Print your name:, (last) (first) I am aware of the Berkeley Campus Code of Student Conduct and acknowledge that academic misconduct will be
Introduction to Cryptography. Lecture 6
Introduction to Cryptography Lecture 6 Benny Pinkas page 1 1 Data Integrity, Message Authentication Risk: an active adversary might change messages exchanged between Alice and Bob M Alice M M M Bob Eve
Key Establishment. Chester Rebeiro IIT Madras. Stinson : Chapter 10
Key Establishment Chester Rebeiro IIT Madras CR Stinson : Chapter 10 Multi Party secure communication C D A B E F N parties want to communicate securely with each other (N=6 in this figure) If sends a
Key Establishment and Authentication Protocols EECE 412
Key Establishment and Authentication Protocols EECE 412 1 where we are Protection Authorization Accountability Availability Access Control Data Protection Audit Non- Repudiation Authentication Cryptography
Issues. Separation of. Distributed system security. Security services. Security policies. Security mechanism
Module 9 - Security Issues Separation of Security policies Precise definition of which entities in the system can take what actions Security mechanism Means of enforcing that policy Distributed system
Diffie-Hellman Key Agreement
Diffie-Hellman Key Agreement (Anonymous) Diffie-Hellman 0. params: p, g 1. generate: a 2. compute: A= g a p 3. compute: s= B a p Alice A B s = g ab p Bob 0. params: p, g 1. generate: b 2. compute: B= g
REMOVE KEY ESCROW FROM THE IDENTITY-BASED ENCRYPTION SYSTEM
REMOVE KEY ESCROW FROM THE IDENTITY-BASED ENCRYPTION SYSTEM Zhaohui Cheng, Richard Comley Luminita Vasiu School of Computing Science, Middlesex University White Hart Lane, London N17 8HR, United Kingdom
Key Management and Distribution
CPE 542: CRYPTOGRAPHY & NETWORK SECURITY Chapter 10 Key Management; Other Public Key Cryptosystems Dr. Lo ai Tawalbeh Computer Engineering Department Jordan University of Science and Technology Jordan
Cryptography and Network Security Chapter 10. Fourth Edition by William Stallings
Cryptography and Network Security Chapter 10 Fourth Edition by William Stallings Chapter 10 Key Management; Other Public Key Cryptosystems No Singhalese, whether man or woman, would venture out of the
Kurose & Ross, Chapters (5 th ed.)
Kurose & Ross, Chapters 8.2-8.3 (5 th ed.) Slides adapted from: J. Kurose & K. Ross \ Computer Networking: A Top Down Approach (5 th ed.) Addison-Wesley, April 2009. Copyright 1996-2010, J.F Kurose and
Trustworthy Computing under Identity-Based Encryption
Trustworthy Computing under Identity-Based Encryption Shabaaz Shaik 1, M.Srikanth Yadav 2 1 Asst.Professor, Dept.of IT, R.K College of Engineering, A.P., India. 2 Assoc.Professor & Head, Dept.of CSE, R.K
Distributed Systems. 26. Cryptographic Systems: An Introduction. Paul Krzyzanowski. Rutgers University. Fall 2015
Distributed Systems 26. Cryptographic Systems: An Introduction Paul Krzyzanowski Rutgers University Fall 2015 1 Cryptography Security Cryptography may be a component of a secure system Adding cryptography
Public Key Algorithms
CSE597B: Special Topics in Network and Systems Security Public Key Cryptography Instructor: Sencun Zhu The Pennsylvania State University Public Key Algorithms Public key algorithms RSA: encryption and
Advanced Topics in Cryptography
Advanced Topics in Cryptography Lecture 9: Identity based encryption (IBE), Cocks scheme. Benny Pinkas page 1 1 Related papers Lecture notes from MIT http://crypto.csail.mit.edu/classes/6.876/lecture-notes.html
A Key-Policy Attribute-based Encryption Scheme for General Circuit from Bilinear Maps
International Journal of Network Security, Vol.19, No.5, PP.704-710, Sept. 2017 (DOI: 10.6633/IJNS.201709.19(5).07) 704 A Key-Policy Attribute-based Encryption Scheme for General Circuit from Bilinear
Group Selection and Key Management Strategies for Ciphertext-Policy Attribute-Based Encryption
Rochester Institute of Technology RIT Scholar Works Theses Thesis/Dissertation Collections 12-2013 Group Selection and Key Management Strategies for Ciphertext-Policy Attribute-Based Encryption Russell
Crypto CS 485/ECE 440/CS 585 Fall 2017
Crypto CS 485/ECE 440/CS 585 Fall 2017 SSL/TLS Secure Sockets Layer, Transport Layer Security Web (HTTPS), email, any application based on sockets Key ideas Authentication Secure key exchange End-to-end
S. Erfani, ECE Dept., University of Windsor Network Security
4.11 Data Integrity and Authentication It was mentioned earlier in this chapter that integrity and protection security services are needed to protect against active attacks, such as falsification of data
Lecture 9a: Secure Sockets Layer (SSL) March, 2004
Internet and Intranet Protocols and Applications Lecture 9a: Secure Sockets Layer (SSL) March, 2004 Arthur Goldberg Computer Science Department New York University artg@cs.nyu.edu Security Achieved by
Secure Multiparty Computation
Secure Multiparty Computation Li Xiong CS573 Data Privacy and Security Outline Secure multiparty computation Problem and security definitions Basic cryptographic tools and general constructions Yao s Millionnare
Using Commutative Encryption to Share a Secret
Using Commutative Encryption to Share a Secret Saied Hosseini Khayat August 18, 2008 Abstract It is shown how to use commutative encryption to share a secret. Suppose Alice wants to share a secret with
Authentication Part IV NOTE: Part IV includes all of Part III!
Authentication Part IV NOTE: Part IV includes all of Part III! ECE 3894 Hardware-Oriented Security and Trust Spring 2018 Assoc. Prof. Vincent John Mooney III Georgia Institute of Technology NOTE: THE FOLLOWING
Introduction to Medical Computing
CS 2125 Introduction to Medical Computing Stephen M. Watt The University of Western Ontario Topic 3 Cryptography University of Western Ontario CS 2125. Stephen M. Watt Cryptography Some things should be
Inter-domain Identity-based Proxy Re-encryption
Inter-domain Identity-based Proxy Re-encryption Qiang Tang, Pieter Hartel, Willem Jonker Faculty of EWI, University of Twente, the Netherlands {q.tang, pieter.hartel, jonker}@utwente.nl August 19, 2008
Public Key Algorithms
Public Key Algorithms CS 472 Spring 13 Lecture 6 Mohammad Almalag 2/19/2013 Public Key Algorithms - Introduction Public key algorithms are a motley crew, how? All hash algorithms do the same thing: Take
Solution of Exercise Sheet 10
Foundations of Cybersecurity (Winter 16/17) Prof. Dr. Michael Backes CISPA / Saarland University saarland university computer science Solution of Exercise Sheet 10 1 Diffie-Hellman Key Exchange Alice and
Spring 2010: CS419 Computer Security
Spring 2010: CS419 Computer Security Vinod Ganapathy Lecture 7 Topic: Key exchange protocols Material: Class handout (lecture7_handout.pdf) Chapter 2 in Anderson's book. Today s agenda Key exchange basics
Key Escrow free Identity-based Cryptosystem
Key Escrow free Manik Lal Das DA-IICT, Gandhinagar, India About DA-IICT and Our Group DA-IICT is a private university, located in capital of Gujarat state in India. DA-IICT offers undergraduate and postgraduate
CS 6324: Information Security More Info on Key Establishment: RSA, DH & QKD
ERIK JONSSON SCHOOL OF ENGINEERING & COMPUTER SCIENCE Cyber Security Research and Education Institute CS 6324: Information Security Dr. Junia Valente Department of Computer Science The University of Texas
CS3235 Seventh set of lecture slides
CS3235 Seventh set of lecture slides Hugh Anderson National University of Singapore School of Computing October, 2007 Hugh Anderson CS3235 Seventh set of lecture slides 1 Warp 9... Outline 1 Public Key
DAC-MACS: Effective Data Access Control for Multiauthority Cloud Storage Systems
1790 IEEE TRANSACTIONS ON INFORMATION FORENSICS AND SECURITY, VOL. 8, NO. 11, NOVEMBER 2013 DAC-MACS: Effective Data Access Control for Multiauthority Cloud Storage Systems Kan Yang, Associate Member,
Crypto Background & Concepts SGX Software Attestation
CSE 5095 & ECE 4451 & ECE 5451 Spring 2017 Lecture 4b Slide deck extracted from Kamran s tutorial on SGX, presented during ECE 6095 Spring 2017 on Secure Computation and Storage, a precursor to this course
PROTECTING CONVERSATIONS
PROTECTING CONVERSATIONS Basics of Encrypted Network Communications Naïve Conversations Captured messages could be read by anyone Cannot be sure who sent the message you are reading Basic Definitions Authentication
ח'/סיון/תשע "א. RSA: getting ready. Public Key Cryptography. Public key cryptography. Public key encryption algorithms
Public Key Cryptography Kurose & Ross, Chapters 8.28.3 (5 th ed.) Slides adapted from: J. Kurose & K. Ross \ Computer Networking: A Top Down Approach (5 th ed.) AddisonWesley, April 2009. Copyright 19962010,
1 A Tale of Two Lovers
CS 120/ E-177: Introduction to Cryptography Salil Vadhan and Alon Rosen Dec. 12, 2006 Lecture Notes 19 (expanded): Secure Two-Party Computation Recommended Reading. Goldreich Volume II 7.2.2, 7.3.2, 7.3.3.
PIRATTE: Proxy-based Immediate Revocation of ATTribute-based Encryption
PIRATTE: Proxy-based Immediate Revocation of ATTribute-based Encryption Sonia Jahid and Nikita Borisov {sjahid2,nikita}@illinois.edu University of Illinois at Urbana-Champaign arxiv:208.4877v [cs.cr] 23
CIS 4360 Secure Computer Systems Applied Cryptography
CIS 4360 Secure Computer Systems Applied Cryptography Professor Qiang Zeng Spring 2017 Symmetric vs. Asymmetric Cryptography Symmetric cipher is much faster With asymmetric ciphers, you can post your Public