Noise Protocol Framework. Trevor Perrin
|
|
|
- Clifton Morton
- 6 years ago
- Views:
Transcription
1 Noise Protocol Framework Trevor Perrin
2 Cryptography Public Key (DH, RSA, ECC etc) Symmetric Key (AES etc)
3 AKE Authenticated Key Exchange (or Agreement) Goals Shared symmetric key Authentication Forward secrecy
4 AKE in practice TLS, QUIC, SSH, IPsec Tor (Ntor, obfsproxy) CurveCP, MinimaLT OTR, Pond, ZRTP, PGP, Signal Noise
5 AKE variations One-sided or mutual auth Pre-specified or post-specified peers Identity hiding Early encryption (0-RTT) Mix in pre-shared keys Key confirmation, deniability, efficiency,
6 AKE patterns Framework of AKE patterns Easy to analyze their properties Easy to select based on requirements Easy to instantiate and implement
7 AKE g x g y shared_key = g xy
8 Server Auth g x g y, [certificates,] signature shared_key = g xy
9 Mutual Auth g x g y, [certificates,] signature [certificates,] signature shared_key = g xy
10 Details g x (can x be reused?) g y, [certificates,] signature [certificates,] signature shared_key = g xy
11 Details g x (can x be reused?) g y, [certificates,] signature(?) [certificates,] signature(?) shared_key = g xy
12 Details g x (can x be reused?) g y, [certificates,] signature(?) [certificates,] signature(?) shared_key = H(g xy )
13 Details g x (one-time ephemeral) g y, [certificates,] signature(?) [certificates,] signature(?) shared_key = H(g xy )
14 Details g x (one-time ephemeral) g y, [certificates,] signature(h) [certificates,] signature(h) shared_key = H(g xy ) h = hash of handshake so far
15 Details g x (one-time ephemeral) g y, [certificates,] signature(h) [certificates,] signature(h) shared_key = Hash(g xy ) h = hash of handshake so far
16 Details g x (one-time ephemeral) g y, [certificates,] signature(h) [certificates,] signature(h) shared_key = Hash(g xy h) h = hash of handshake so far
17 Identity hiding g x (one-time ephemeral) g y,<dh>, [certificates,] signature(h) [certificates,] signature(h) shared_key = Hash(g xy h) h = hash of handshake so far
18 Simplifying g x (one-time ephemeral) g y, <DH>, [certificates,] signature(h) [certificates,] signature(h)
19 Simplifying e e, <DH>, [certificates,] signature(h) [certificates,] signature(h)
20 Simplifying e e, <DH>, [certificates,] signature [certificates,] signature
21 Simplifying e e, <DH>, s, signature s, signature
22 Simplifying e, [payload] e, <DH>, s, signature, [payload] s, signature, [payload]
23 Simplifying e e, <DH>, s, signature s, signature
24 Noise patterns e e, dhee, s, dhse s, dhse s i s r e i e r
25 Noise patterns e e, dhee, s, dhse s, dhse s i s r e i e r
26 Noise patterns e e, dhee, s, dhse s, dhse e: Send ephemeral public key s: Send static public key (encrypt if shared key exists) dh[send][recv]: Mix the specified DH into the shared key
27 MQV? e e, dhee, s s, MQV s i s r e i e r
28 Noise patterns (Ntor?) e e, dhee, dhse s i s r e i e r
29 0-RTT encryption e, dhes e, dhee s i s r e i e r
30 0-RTT + client auth e, dhes, s, dhss e, dhee, dhes s i s r e i e r
31 0-RTT encryption e, dhes e, dhee s i s r e i e r
32 0-RTT (QUIC?) e, dhee e, dhee, dhse s i s r e i e r e r '
33 0-RTT + client auth e, dhee, s, dhse e, dhee, dhse, dhes s i s r e i e r e r '
34 Public-key encryption e, dhes s i s r e i e r
35 Authenticated encryption e, dhes, dhss s i s r e i e r
36 Protocol names Noise_pattern_dh_cipher_hash Noise_XX_25519_AESGCM_SHA256 Noise_IK_448_ChaChaPoly_BLAKE2b Noise_NX_25519_AESGCM_BLAKE2s
37 Symmetric crypto Key derivation (KDF) Bind keys to context
38 Strategy Mix all secrets into a chaining key and encryption key Encrypt everything except ephemerals, once an encryption key is present Hash all transcript into handshake hash Authenticate handshake hash in all handshake encryptions
39 Symmetric state h ck k n h = handshake hash ck = chaining key k = encryption key n = encryption nonce (counter)
40 Hashing inputs h ck k n input HASH h h = HASH(h input)
41 Hashing inputs h ck k n input HASH h input HASH h
42 KDF h ck k n KDF input ck k 0 ck, k = HKDF(salt=ck, input)
43 KDF h ck k n KDF input ck k 0 temp = HMAC(ck, input) ck = HMAC(temp, 0x01) k = HMAC(temp, ck 0x02)
44 KDF h ck k n KDF input ck k 0 KDF input ck k 0
45 Handshake encryption h ck k n (associated data) ENCRYPT plaintext HASH ciphertext h n+1
46 Handshake decryption h ck k n (associated data) DECRYPT ciphertext HASH plaintext h n+1
47 h ck k n protocol name prologue e e, dhee, s, dhse s, dhse
48 e h ck k n protocol name prologue e payload e, dhee, s, dhse s, dhse
49 e h ck k n protocol name prologue e payload e e, dhee, s, dhse s, dhse
50 e e, dhee, s, dhse h ck k n 0 protocol name prologue e payload e dhee s, dhse
51 e e, dhee, s, dhse s, dhse h ck k decrypt n 0 protocol name prologue e payload e dhee s
52 e e, dhee, s, dhse s, dhse h ck k decrypt n 0 protocol name prologue e payload e dhee s 0 dhse
53 e e, dhee, s, dhse s, dhse h ck k decrypt n 0 protocol name prologue e payload e dhee s 0 dhse decrypt payload
54 e e, dhee, s, dhse s, dhse h ck k decrypt n 0 protocol name prologue e payload e dhee s 0 dhse decrypt payload encrypt 1 s
55 e h ck k n protocol name prologue e payload e dhee e, dhee, s, dhse decrypt 0 s s, dhse 0 dhse decrypt payload encrypt 1 s 0 dhse
56 e h ck k n protocol name prologue e payload e dhee e, dhee, s, dhse decrypt 0 0 s dhse s, dhse decrypt payload encrypt 1 s 0 dhse encrypt payload
57 e h ck k decrypt n 0 protocol name prologue e payload e dhee s e, dhee, s, dhse 0 dhse decrypt payload s, dhse encrypt 1 s 0 dhse encrypt payload <split> SEND RECV
58 The future? Find more users Get more analysis New patterns and crypto functions Extend the language, new symmetric crypto?
L13. Reviews. Rocky K. C. Chang, April 10, 2015
L13. Reviews Rocky K. C. Chang, April 10, 2015 1 Foci of this course Understand the 3 fundamental cryptographic functions and how they are used in network security. Understand the main elements in securing
Understand the TLS handshake Understand client/server authentication in TLS. Understand session resumption Understand the limitations of TLS
Last Updated: Oct 31, 2017 Understand the TLS handshake Understand client/server authentication in TLS RSA key exchange DHE key exchange Explain certificate ownership proofs in detail What cryptographic
OPTLS and TLS 1.3. Hugo Krawczyk, Hoeteck Wee. TRON Workshop 2/21/2016
OPTLS and TLS 1.3 Hugo Krawczyk, Hoeteck Wee TRON Workshop 2/21/2016 1 Plan Explain OPTLS approach and modes (handshake only) Highlight protocol concept and simplicity Common logic to all protocol modes
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
Security Association Creation
1 Security Association Creation David L. Black November 2006 2 The Big Picture: Three Proposals Framework: 06-369 specifies Security Associations (SAs) Connect key generation to key usage (and identify
Computer Networking. What is network security? Chapter 7: Network security. Symmetric key cryptography. The language of cryptography
Chapter 7: Network security 15-441 Computer Networking Network Security: Cryptography, Authentication, Integrity Foundations: what is security? cryptography authentication message integrity key distribution
Privacy, Discovery, and Authentication for the Internet of Things
Privacy, Discovery, and Authentication for the Internet of Things David J. Wu Ankur Taly Asim Shankar Dan Boneh Stanford University Google Google Stanford University The Internet of Things (IoT) Lots of
for Compound Authentication
Verified Contributive Channel Bindings for Compound Authentication Antoine Delignat-Lavaud, Inria Paris Joint work with Karthikeyan Bhargavan and Alfredo Pironti Motivation: Authentication Composition
Cryptography. Lecture 12. Arpita Patra
Cryptography Lecture 12 Arpita Patra Digital Signatures q In PK setting, privacy is provided by PKE q Integrity/authenticity is provided by digital signatures (counterpart of MACs in PK world) q Definition:
Real-time protocol. Chapter 16: Real-Time Communication Security
Chapter 16: Real-Time Communication Security Mohammad Almalag Dept. of Computer Science Old Dominion University Spring 2013 1 Real-time protocol Parties negotiate interactively (Mutual) Authentication
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
Privacy, Discovery, and Authentication for the Internet of Things
Privacy, Discovery, and Authentication for the Internet of Things David J. Wu Ankur Taly Asim Shankar Dan Boneh Stanford University Google Google Stanford University The Internet of Things (IoT) Lots of
Security. Communication security. System Security
Security Communication security security of data channel typical assumption: adversary has access to the physical link over which data is transmitted cryptographic separation is necessary System Security
Auth. Key Exchange. Dan Boneh
Auth. Key Exchange Review: key exchange Alice and want to generate a secret key Saw key exchange secure against eavesdropping Alice k eavesdropper?? k This lecture: Authenticated Key Exchange (AKE) key
Elaine Barker and Allen Roginsky NIST June 29, 2010
Elaine Barker and Allen Roginsky NIST June 29, 2010 Background: Cryptography is used to protect sensitive information Attackers are becoming smarter, and computers are becoming more powerful Many commonly
Chapter 4: Securing TCP connections
Managing and Securing Computer Networks Guy Leduc Chapter 5: Securing TCP connections Computer Networking: A Top Down Approach, 6 th edition. Jim Kurose, Keith Ross Addison-Wesley, March 2012. (section
CS 494/594 Computer and Network Security
CS 494/594 Computer and Network Security Dr. Jinyuan (Stella) Sun Dept. of Electrical Engineering and Computer Science University of Tennessee Fall 2010 1 Real-Time Communication Security Network layers
Refresher: Applied Cryptography
Refresher: Applied Cryptography (emphasis on common tools for secure processors) Chris Fletcher Fall 2017, 598 CLF, UIUC Complementary reading Intel SGX Explained (ISE) Victor Costan, Srini Devadas https://eprint.iacr.org/2016/086.pdf
Computer Security. 08r. Pre-exam 2 Last-minute Review Cryptography. Paul Krzyzanowski. Rutgers University. Spring 2018
Computer Security 08r. Pre-exam 2 Last-minute Review Cryptography Paul Krzyzanowski Rutgers University Spring 2018 March 26, 2018 CS 419 2018 Paul Krzyzanowski 1 Cryptographic Systems March 26, 2018 CS
nquic: Noise-Based QUIC Packet Protection
nquic: Noise-Based QUIC Packet Protection Mathias Hall-Andersen *, David Wong *, Nick Sullivan +, and Alishah Chator + Abstract * NCC Group + Cloudflare January 12, 2019 We present nquic, a variant of
SSL/TLS & 3D Secure. CS 470 Introduction to Applied Cryptography. Ali Aydın Selçuk. CS470, A.A.Selçuk SSL/TLS & 3DSec 1
SSL/TLS & 3D Secure CS 470 Introduction to Applied Cryptography Ali Aydın Selçuk CS470, A.A.Selçuk SSL/TLS & 3DSec 1 SSLv2 Brief History of SSL/TLS Released in 1995 with Netscape 1.1 Key generation algorithm
Using Cryptography CMSC 414. October 16, 2017
Using Cryptography CMSC 414 October 16, 2017 Digital Certificates Recall: K pub = (n, e) This is an RSA public key How do we know who this is for? Need to bind identity to a public key We can do this using
Protecting TLS from Legacy Crypto
Protecting TLS from Legacy Crypto http://mitls.org Karthikeyan Bhargavan + many, many others. (INRIA, Microsoft Research, LORIA, IMDEA, Univ of Pennsylvania, Univ of Michigan, JHU) Popular cryptographic
(2½ hours) Total Marks: 75
(2½ hours) Total Marks: 75 N. B.: (1) All questions are compulsory. (2) Makesuitable assumptions wherever necessary and state the assumptions made. (3) Answers to the same question must be written together.
Network Security: TLS/SSL. Tuomas Aura T Network security Aalto University, Nov-Dec 2014
Network Security: TLS/SSL Tuomas Aura T-110.5241 Network security Aalto University, Nov-Dec 2014 Outline 1. Diffie-Hellman key exchange (recall from earlier) 2. Key exchange using public-key encryption
1.264 Lecture 28. Cryptography: Asymmetric keys
1.264 Lecture 28 Cryptography: Asymmetric keys Next class: Anderson chapters 20. Exercise due before class (Reading doesn t cover same topics as lecture) 1 Asymmetric or public key encryption Receiver
Computer Security. 10r. Recitation assignment & concept review. Paul Krzyzanowski. Rutgers University. Spring 2018
Computer Security 10r. Recitation assignment & concept review Paul Krzyzanowski Rutgers University Spring 2018 April 3, 2018 CS 419 2018 Paul Krzyzanowski 1 1. What is a necessary condition for perfect
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
IPsec (AH, ESP), IKE. Guevara Noubir CSG254: Network Security
IPsec (AH, ESP), IKE Guevara Noubir noubir@ccs.neu.edu Securing Networks Control/Management (configuration) Applications Layer telnet/ftp: ssh, http: https, mail: PGP (SSL/TLS) Transport Layer (TCP) (IPSec,
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
CMSC 414 S09 Exam 2 Page 1 of 6 Name:
CMSC 414 S09 Exam 2 Page 1 of 6 Name: Total points: 100. Total time: 115 minutes. 6 problems over 6 pages. No book, notes, or calculator Unless stated otherwise, the following conventions are used: K{X}
Ideal Security Protocol. Identify Friend or Foe (IFF) MIG in the Middle 4/2/2012
Ideal Security Protocol Satisfies security requirements Requirements must be precise Efficient Small computational requirement Small bandwidth usage, network delays Not fragile Works when attacker tries
Computer Security: Principles and Practice
Computer Security: Principles and Practice Chapter 2 Cryptographic Tools First Edition by William Stallings and Lawrie Brown Lecture slides by Lawrie Brown Cryptographic Tools cryptographic algorithms
Authenticated Encryption in TLS
Authenticated Encryption in TLS Same modelling & verification approach concrete security: each lossy step documented by a game and a reduction (or an assumption) on paper Standardized complications - multiple
Public Key Cryptography, OpenPGP, and Enigmail. 31/5/ Geek Girls Carrffots GVA
Public Key Cryptography, OpenPGP, and Enigmail Cryptography is the art and science of transforming (encrypting) a message so only the intended recipient can read it Symmetric Cryptography shared secret
Cryptography MIS
Cryptography MIS-5903 http://community.mis.temple.edu/mis5903sec011s17/ Cryptography History Substitution Monoalphabetic Polyalphabetic (uses multiple alphabets) uses Vigenere Table Scytale cipher (message
Chapter 8. Network Security. Cryptography. Need for Security. An Introduction to Cryptography 10/7/2010
Cryptography Chapter 8 Network Security Introduction to Cryptography Substitution Ciphers Transposition Ciphers One-Time Pads Two Fundamental Cryptographic Principles Need for Security An Introduction
14. Internet Security (J. Kurose)
14. Internet Security (J. Kurose) 1 Network security Foundations: what is security? cryptography authentication message integrity key distribution and certification Security in practice: application layer:
CSE 127: Computer Security Cryptography. Kirill Levchenko
CSE 127: Computer Security Cryptography Kirill Levchenko October 24, 2017 Motivation Two parties want to communicate securely Secrecy: No one else can read messages Integrity: messages cannot be modified
Encryption. INST 346, Section 0201 April 3, 2018
Encryption INST 346, Section 0201 April 3, 2018 Goals for Today Symmetric Key Encryption Public Key Encryption Certificate Authorities Secure Sockets Layer Simple encryption scheme substitution cipher:
Network Security: TLS/SSL. Tuomas Aura T Network security Aalto University, Nov-Dec 2010
Network Security: TLS/SSL Tuomas Aura T-110.5240 Network security Aalto University, Nov-Dec 2010 Outline 1. Diffie-Hellman 2. Key exchange using public-key encryption 3. Goals of authenticated key exchange
Encryption Algorithms Authentication Protocols Message Integrity Protocols Key Distribution Firewalls
Security Outline Encryption Algorithms Authentication Protocols Message Integrity Protocols Key Distribution Firewalls Overview Cryptography functions Secret key (e.g., DES) Public key (e.g., RSA) Message
Computer Networks 1 (Mạng Máy Tính 1) Lectured by: Dr. Phạm Trần Vũ
Computer Networks 1 (Mạng Máy Tính 1) Lectured by: Dr. Phạm Trần Vũ Chapter 8 Network Security Computer Networking: A Top Down Approach, 5 th edition. Jim Kurose, Keith Ross Addison-Wesley, April 2009.
Cryptography and secure channel. May 17, Networks and Security. Thibault Debatty. Outline. Cryptography. Public-key encryption
and secure channel May 17, 2018 1 / 45 1 2 3 4 5 2 / 45 Introduction Simplified model for and decryption key decryption key plain text X KE algorithm KD Y = E(KE, X ) decryption ciphertext algorithm X
COSC4377. Chapter 8 roadmap
Lecture 28 Chapter 8 roadmap 8.1 What is network security? 8.2 Principles of cryptography 8.3 Message integrity 8.4 Securing e mail 8.5 Securing TCP connections: SSL 8.6 Network layer security: IPsec 8.7
Chapter 8 Network Security
Chapter 8 Network Security A note on the use of these ppt slides: We re making these slides freely available to all (faculty, students, readers). They re in PowerPoint form so you can add, modify, and
Chapter 8. Network Security. Need for Security. An Introduction to Cryptography. Transposition Ciphers One-Time Pads
Cryptography p y Chapter 8 Network Security Introduction to Cryptography Substitution Ciphers Transposition Ciphers One-Time Pads Two Fundamental Cryptographic Principles Need for Security An Introduction
Key Encryption as per T10/06-103
1 T10/06-144r0 Key Encryption as per T10/06-103 David L. Black (author) Jack Harwood (presenter) 2 Problem and Design Goals 05-446 only specifies encryption key transfer in clear Keys can be entirely too
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
SharkFest 17 Europe. SSL/TLS Decryption. uncovering secrets. Wednesday November 8th, Peter Wu Wireshark Core Developer
SharkFest 17 Europe SSL/TLS Decryption uncovering secrets Wednesday November 8th, 2017 Peter Wu Wireshark Core Developer peter@lekensteyn.nl 1 About me Wireshark contributor since 2013, core developer
SIDE CHANNEL ATTACKS AGAINST IOS CRYPTO LIBRARIES AND MORE DR. NAJWA AARAJ HACK IN THE BOX 13 APRIL 2017
SIDE CHANNEL ATTACKS AGAINST IOS CRYPTO LIBRARIES AND MORE DR. NAJWA AARAJ HACK IN THE BOX 13 APRIL 2017 WHAT WE DO What we do Robust and Efficient Cryptographic Protocols Research in Cryptography and
Lecture 33. Firewalls. Firewall Locations in the Network. Castle and Moat Analogy. Firewall Types. Firewall: Illustration. Security April 15, 2005
Firewalls Lecture 33 Security April 15, 2005 Idea: separate local network from the Internet Trusted hosts and networks Intranet Firewall DMZ Router Demilitarized Zone: publicly accessible servers and networks
Introduction to Public-Key Cryptography
Introduction to Public-Key Cryptography Nadia Heninger University of Pennsylvania June 11, 2018 We stand today on the brink of a revolution in cryptography. Diffie and Hellman, 1976 Symmetric cryptography
Transport Layer Security
CEN585 Computer and Network Security Transport Layer Security Dr. Mostafa Dahshan Department of Computer Engineering College of Computer and Information Sciences King Saud University mdahshan@ksu.edu.sa
What is Suite B? How does it relate to Government Certifications?
What is Suite B? How does it relate to Government Certifications? Agenda What are we going to do? Who am I? A little background on Suite-B. Suite-B: What s covered. How does Suite-B relate to your favorite
CIS 6930/4930 Computer and Network Security. Topic 8.2 Internet Key Management
CIS 6930/4930 Computer and Network Security Topic 8.2 Internet Key Management 1 Key Management Why do we need Internet key management AH and ESP require encryption and authentication keys Process to negotiate
DROWN - Breaking TLS using SSLv2
DROWN - Breaking TLS using SSLv2 Nimrod Aviram, Sebastian Schinzel, Juraj Somorovsky, Nadia Heninger, Maik Dankel, Jens Steube, Luke Valenta, David Adrian, J. Alex Halderman, Viktor Dukhovni, Emilia Käsper,
Cryptography Lecture 9 Key distribution and trust, Elliptic curve cryptography
Cryptography Lecture 9 Key distribution and trust, Elliptic curve cryptography Key Management The first key in a new connection or association is always delivered via a courier Once you have a key, you
WhatsApp Encryption Overview. Technical white paper
WhatsApp Encryption Overview Technical white paper July 6, 2017 Originally published April 5, 2016 Contents Introduction................................... 3 Terms......................................
Digital it Signatures. Message Authentication Codes. Message Hash. Security. COMP755 Advanced OS 1
Digital Signatures Digital it Signatures Offer similar protections as handwritten signatures in the real world. 1. Difficult to forge. 2. Easily verifiable. 3. Not deniable. 4. Easy to implement. 5. Differs
Decentralised Communication: The challenge of balancing interoperability and privacy.
Decentralised Communication: The challenge of balancing interoperability and privacy. matthew@matrix.org http://www.matrix.org Privacy in Matrix 2 Two basic types of privacy: 1. Can attackers see what
Summary on Crypto Primitives and Protocols
Summary on Crypto Primitives and Protocols Levente Buttyán CrySyS Lab, BME www.crysys.hu 2015 Levente Buttyán Basic model of cryptography sender key data ENCODING attacker e.g.: message spatial distance
Grenzen der Kryptographie
Microsoft Research Grenzen der Kryptographie Dieter Gollmann Microsoft Research 1 Summary Crypto does not solve security problems Crypto transforms security problems Typically, the new problems relate
Cryptography opportunities in Tor. Nick Mathewson The Tor Project 21 January 2013
Cryptography opportunities in Tor Nick Mathewson The Tor Project 21 January 2013 Summary Very quick Tor overview Tor's cryptography, and how it's evolving Various opportunities for more Tor crypto work
Cristina Nita-Rotaru. CS355: Cryptography. Lecture 17: X509. PGP. Authentication protocols. Key establishment.
CS355: Cryptography Lecture 17: X509. PGP. Authentication protocols. Key establishment. Public Keys and Trust Public Key:P A Secret key: S A Public Key:P B Secret key: S B How are public keys stored How
CSC/ECE 774 Advanced Network Security
Computer Science CSC/ECE 774 Advanced Network Security Topic 2. Network Security Primitives CSC/ECE 774 Dr. Peng Ning 1 Outline Absolute basics Encryption/Decryption; Digital signatures; D-H key exchange;
Cryptography SSL/TLS. Network Security Workshop. 3-5 October 2017 Port Moresby, Papua New Guinea
Cryptography SSL/TLS Network Security Workshop 3-5 October 2017 Port Moresby, Papua New Guinea 1 History Secure Sockets Layer was developed by Netscape in 1994 as a protocol which permitted persistent
Network Security Chapter 8
Network Security Chapter 8 Cryptography Symmetric-Key Algorithms Public-Key Algorithms Digital Signatures Management of Public Keys Communication Security Authentication Protocols Email Security Web Security
Internet and Intranet Protocols and Applications
Internet and Intranet Protocols and Applications Lecture 10: Internet and Network Security April 9, 2003 Arthur Goldberg Computer Science Department New York University artg@cs.nyu.edu What is network
Cryptography and Network Security
Cryptography and Network Security Spring 2012 http://users.abo.fi/ipetre/crypto/ Lecture 14: Folklore, Course summary, Exam requirements Ion Petre Department of IT, Åbo Akademi University 1 Folklore on
Satisfying CC Cryptography Requirements through CAVP/CMVP Certifications. International Crypto Module Conference May 19, 2017
Satisfying CC Cryptography Requirements through CAVP/CMVP Certifications International Crypto Module Conference May 19, 2017 Synopsis Background NIAP policy relating to cryptographic requirements NIAP
PKCS #11 Message-Based Encryption and Decryption
PKCS #11 Message-Based Encryption and Decryption Wan-Teh Chang , 2014-03-11 Introduction Message-based encryption refers to the process of encrypting multiple messages using the same encryption
Information Security & Privacy
IS 2150 / TEL 2810 Information Security & Privacy James Joshi Associate Professor, SIS Lecture 2 Sept 4, 2013 Key Management Network Security 1 Objectives Understand/explain the issues related to, and
David Wetherall, with some slides from Radia Perlman s security lectures.
David Wetherall, with some slides from Radia Perlman s security lectures. djw@cs.washington.edu Networks are shared: Want to secure communication between legitimate participants from others with (passive
BCA III Network security and Cryptography Examination-2016 Model Paper 1
Time: 3hrs BCA III Network security and Cryptography Examination-2016 Model Paper 1 M.M:50 The question paper contains 40 multiple choice questions with four choices and student will have to pick the correct
Scanned by CamScanner
Scanned by CamScanner Scanned by CamScanner Scanned by CamScanner Scanned by CamScanner Scanned by CamScanner Scanned by CamScanner Scanned by CamScanner Symmetric-Key Cryptography CS 161: Computer Security
CONTENTS. vii. Chapter 1 TCP/IP Overview 1. Chapter 2 Symmetric-Key Cryptography 33. Acknowledgements
CONTENTS Preface Acknowledgements xiii xvii Chapter 1 TCP/IP Overview 1 1.1 Some History 2 1.2 TCP/IP Protocol Architecture 4 1.2.1 Data-link Layer 4 1.2.2 Network Layer 5 1.2.2.1 Internet Protocol 5 IPv4
Principles of Information Security, Fourth Edition. Chapter 8 Cryptography
Principles of Information Security, Fourth Edition Chapter 8 Cryptography Learning Objectives Upon completion of this material, you should be able to: Chronicle the most significant events and discoveries
The Tor Network. Cryptography 2, Part 2, Lecture 6. Ruben Niederhagen. June 16th, / department of mathematics and computer science
The Tor Network Cryptography 2, Part 2, Lecture 6 Ruben Niederhagen June 16th, 2014 Tor Network Introduction 2/33 Classic goals of cryptography: confidentiality, data integrity, authentication, and non-repudiation.
BIG-IP System: SSL Administration. Version
BIG-IP System: SSL Administration Version 13.0.0 Table of Contents Table of Contents About SSL Administration on the BIG-IP System...7 About SSL administration on the BIG-IP system... 7 Device Certificate
Deep Tech Analysis to AES-GCM in TLS 1.2 and IPSec-v3. Richard Wang and Ed Morris May 20, 2016 International Crypto Module Conference
Deep Tech Analysis to AES-GCM in TLS 1.2 and IPSec-v3 Richard Wang and Ed Morris May 20, 2016 International Crypto Module Conference Topics GCM Overview AES-GCM IV Generation FIPS Requirements (IG A.5)
FIPS Non-Proprietary Security Policy. Level 1 Validation Version 1.2
Oracle Solaris Kernel Cryptographic Framework with SPARC T4 and T5 Software Version: 1.0 and 1.1; Hardware Version: SPARC T4 (527-1437-01) and T5 (7043165) FIPS 140-2 Non-Proprietary Security Policy Level
Symmetric-Key Cryptography
Symmetric-Key Cryptography 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
The question paper contains 40 multiple choice questions with four choices and students will have to pick the correct one (each carrying ½ marks.).
Time: 3hrs BCA III Network security and Cryptography Examination-2016 Model Paper 2 M.M:50 The question paper contains 40 multiple choice questions with four choices and students will have to pick the
CPSC 467: Cryptography and Computer Security
CPSC 467: Cryptography and Computer Security Michael J. Fischer Lecture 24a December 2, 2013 CPSC 467, Lecture 24a 1/20 Secure Shell (SSH) Transport Layer Security (TLS) Digital Rights Management and Trusted
TLS 1.1 Security fixes and TLS extensions RFC4346
F5 Networks, Inc 2 SSL1 and SSL2 Created by Netscape and contained significant flaws SSL3 Created by Netscape to address SSL2 flaws TLS 1.0 Standardized SSL3 with almost no changes RFC2246 TLS 1.1 Security
Module 13 Network Security. Version 1 ECE, IIT Kharagpur
Module 13 Network Security Lesson 40 Network Security 13.1.1 INTRODUCTION Network Security assumes a great importance in the current age. In this chapter we shall look at some of the security measures
PASSWORDS & ENCRYPTION
PASSWORDS & ENCRYPTION Villanova University Department of Computing Sciences D. Justin Price Fall 2014 CRYPTOGRAPHY Hiding the meaning of a message from unintended recipients. Open source algorithms are
05 - WLAN Encryption and Data Integrity Protocols
05 - WLAN Encryption and Data Integrity Protocols Introduction 802.11i adds new encryption and data integrity methods. includes encryption algorithms to protect the data, cryptographic integrity checks
MTAT Applied Cryptography
MTAT.07.017 Applied Cryptography Transport Layer Security (TLS) Advanced Features University of Tartu Spring 2016 1 / 16 Client Server Authenticated TLS ClientHello ServerHello, Certificate, ServerHelloDone
Introduction to Cryptography. Vasil Slavov William Jewell College
Introduction to Cryptography Vasil Slavov William Jewell College Crypto definitions Cryptography studies how to keep messages secure Cryptanalysis studies how to break ciphertext Cryptology branch of mathematics,
Digital Signatures. Public-Key Signatures. Arbitrated Signatures. Digital Signatures With Encryption. Terminology. Message Authentication Code (MAC)
Message Authentication Code (MAC) Key-dependent one-way hash function Only someone with a correct key can verify the hash value Easy way to turn one-way hash function into MAC is to encrypt hash value
CSE484 Final Study Guide
CSE484 Final Study Guide Winter 2013 NOTE: This study guide presents a list of ideas and topics that the TAs find useful to know, and may not represent all the topics that could appear on the final exam.
Preventing Attackers From Using Verifiers: A-PAKE With PK-Id
Preventing Attackers From Using Verifiers: A-PAKE With PK-Id Sean Parkinson (sean.parkinson@rsa.com) RSA, The Security Division of EMC Session ID: ARCH R02 Session Classification: Advanced Outline Introduction
Cryptography III. Public-Key Cryptography Digital Signatures. 2/1/18 Cryptography III
Cryptography III Public-Key Cryptography Digital Signatures 2/1/18 Cryptography III 1 Public Key Cryptography 2/1/18 Cryptography III 2 Key pair Public key: shared with everyone Secret key: kept secret,
Chapter 8 Web Security
Chapter 8 Web Security Web security includes three parts: security of server, security of client, and network traffic security between a browser and a server. Security of server and security of client
CSC 5930/9010 Modern Cryptography: Public-Key Infrastructure
CSC 5930/9010 Modern Cryptography: Public-Key Infrastructure Professor Henry Carter Fall 2018 Recap Digital signatures provide message authenticity and integrity in the public-key setting As well as public
BIG-IP System: SSL Administration. Version
BIG-IP System: SSL Administration Version 13.1.0 Table of Contents Table of Contents About SSL Administration on the BIG-IP System...7 About SSL administration on the BIG-IP system... 7 Device Certificate
NIST Post- Quantum Cryptography Standardiza9on
NIST Post- Quantum Cryptography Standardiza9on Lily Chen Cryptographic Technology Group Computer Security Division, Informa9on Technology Lab Na9onal Ins9tute of Standards and Technology (NIST) NIST Crypto
Packet Tracer - Configure and Verify a Site-to-Site IPsec VPN Using CLI
Packet Tracer - Configure and Verify a Site-to-Site IPsec VPN Using CLI Topology Addressing Table R1 R2 R3 Device Interface IP Address Subnet Mask Default Gateway Switch Port G0/0 192.168.1.1 255.255.255.0