lec-13-digital-signature

lec-13-digital-signature - 10/12/10 UB Fall 2010 CSE565: S....

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Unformatted text preview: 10/12/10 UB Fall 2010 CSE565: S. Upadhyaya Lec 13.1 UB Fall 2010 CSE565: S. Upadhyaya Lec 13.1 CSE565: Computer Security Lecture 13 Digital Signatures Shambhu Upadhyaya Computer Science & Eng. University at Buffalo Buffalo, New York 14260 10/12/10 UB Fall 2010 CSE565: S. Upadhyaya Lec 13.2 UB Fall 2010 CSE565: S. Upadhyaya Lec 13.2 Acknowledgments Material for some slides is drawn from Lawrie Browns slides 10/12/10 UB Fall 2010 CSE565: S. Upadhyaya Lec 13.3 UB Fall 2010 CSE565: S. Upadhyaya Lec 13.3 Digital Signatures Message authentication (covered in recitation) protects two parties from any third party does not address issues of lack of trust Digital signatures provide the ability to: verify author, date & time of signature authenticate message contents be verified by third parties to resolve disputes Hence include authentication function with additional capabilities 10/12/10 UB Fall 2010 CSE565: S. Upadhyaya Lec 13.4 UB Fall 2010 CSE565: S. UpadhyayaCSE565: S....
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lec-13-digital-signature - 10/12/10 UB Fall 2010 CSE565: S....

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