'Key distribution' diaporamas de présentation

CIS 203

CIS 203. 16 : Network Security. Security Requirements. Confidentiality Integrity Availability Authenticity. Passive Attacks. Eavesdropping on transmissions To obtain information Release of message contents Outsider learns content of transmission Traffic analysis

764 views • 64 slides

Computer Networks with Internet Technology William Stallings

Computer Networks with Internet Technology William Stallings. Chapter 16 Network Security. Security Requirements. Confidentiality Integrity Availability Authenticity. Passive Attacks. Eavesdropping on transmissions To obtain information Release of message contents

1.02k views • 63 slides

Outline

Outline. User authentication Password authentication, salt Challenge-response authentication protocols Biometrics Token-based authentication Authentication in distributed systems (multi service providers/domains) Single sign-on, Microsoft Passport Trusted Intermediaries (KPC and CA).

708 views • 57 slides

15- 44 0 Distributed Systems Spring 2014

665 views • 56 slides

CSCI-1680 Security

CSCI-1680 Security. Theophilus Benson. Based on lecture notes by Rodrigo Foncesa , Scott Shenker and Mike Freedman. Admini -Trivia. HW #2 graded and on Sakai Avg 96%, StdDev 20% Scores out of 120 points (not including 20 for extra credit)

545 views • 45 slides

Network Security

Network Security. Contents. Security Requirements and Attacks Confidentiality with Conventional Encryption Message Authentication and Hash Functions Public-Key Encryption and Digital Signatures IPv4 and IPv6 Security. Security Requirements. Confidentiality Integrity Availability.

552 views • 40 slides

Cryptography Public Key Cryptosystems

Cryptography Public Key Cryptosystems. Anita Jones CS451 Information Security. Copyright(C) Anita Jones. Public key encryption. The two problems to be solved: Key distribution Digital signature Revolutionary new approach Based on math functions, not simple operations on bit patterns.

649 views • 38 slides

Public Key Cryptography

Public Key Cryptography . Public Key Cryptography. why we might want to consider an alternative to a secret key system using key distribution, and what we're looking for in public key cryptography. . Problem of Key Distribution. there is one difficultly inherent in all KDC mechanisms.

533 views • 35 slides

TinySec: A Link Layer Security Architecture for Wireless Sensor Networks

TinySec: A Link Layer Security Architecture for Wireless Sensor Networks. Seetha Manickam Modified by Sarjana Singh. Motivation TinySec-Introduction Sensor Networks Security threats and Need for link layer security architecture design Design goals Tiny sec Design

408 views • 28 slides

Software Security for the Cloud

Software Security for the Cloud. Public Lecture for Tsinghua University Clark Thomborson 11 March 2010. Questions to be (Partially) Answered. What is cloud computing? What is a trusted cloud? How could a cloud be secured? What software security technologies are applicable to clouds?.

471 views • 28 slides

Introduction To quantum cryptography

Introduction To quantum cryptography. Gagan Deep Singh GTBIT 0851323106(IT) August 29,2009. Cryptography. Transmitting information with access restricted to the intended recipient even if the message is intercepted by others. Cryptography is of increasing importance

472 views • 24 slides

Key Management Network Systems Security

Key Management Network Systems Security. Mort Anvari. Key Management. Asymmetric encryption helps address key distribution problems Two aspects distribution of public keys use of public-key encryption to distribute secret keys. Distribution of Public Keys.

391 views • 24 slides

Anonymous and Authenticated Key Exchange for Roaming Networks

Guomin Yang et al. IEEE Transactions on Wireless Communication Vol. 6 No. 9 September 2007. Anonymous and Authenticated Key Exchange for Roaming Networks. Agenda. Preliminaries Introduction Security requirements Proposed Scheme : AAKE-R Analysis Conclusion. Eavesdropping. C. A. B.

428 views • 24 slides

Quantum Cryptography

Quantum Cryptography. Alok.T.J EC 11. Cryptography. Transmitting information with access restricted to the intended recipient even if the message is intercepted by others. Cryptography is of increasing importance

681 views • 23 slides

Key distribution and certification

Key distribution and certification. In the case of public key encryption model the authenticity of the public key of each partner in the communication must be ensured. Problem solution: Certification Authority (CA) ( trusting autority).

442 views • 22 slides

Internet Security 1 ( IntSi1 )

Internet Security 1 ( IntSi1 ). 4 Public Key Cryptography. Prof. Dr. Andreas Steffen Institute for Internet Technologies and Applications (ITA). Secure Network Protocols. Confidentiality. Data Integrity. Authentication. Non-Repudiation. Digital Signatures. Encryption. MACs MICs.

362 views • 19 slides

Public Key Management and X.509 Certificates

Public Key Management and X.509 Certificates. CSIS 5857: Encoding and Encryption. Public Key Distribution. How does Bob know where a public key comes from? Darth can: Create a public/private key pair K DarthPR , K DarthPU Send the public key K DarthPU to Bob, claiming it is from Alice

302 views • 18 slides

Cryptography and Network Security

423 views • 13 slides

Privacy & Pervasive Healthcare

Privacy & Pervasive Healthcare. Machines of Loving Grace Spring 2008. Issues in Privacy & Security. Access control: ensuring that people who are authorized to see the information can, and others cannot Create Access Control Policies

223 views • 13 slides

237 views • 11 slides