Cryptography Example of a Complex Hybrid System

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timer Asked: Oct 13th, 2017

Question Description

Describe the complex email system located on slide 12 from the slide deck from week 6 titled "Example of a Complex Hybrid System." (It is also attached) Describe in detail the benefits of this system using examples as appropriate.

This paper should be formatted following proper APA formatting guidelines to include the coversheet, headers, page numbers, headings, citations, and references. Please ensure that all references are properly cited.

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PowerPoint File Edit View Insert Format Arrange Tools Slide Show Window Help * 24% 0 Fri 10:52 AM Q Week 6 Lecture (1) Q Search in Presentation o Home Insert Design Transitions Animations Slide Show Review View Share = Layout A- A = A Shape Fill Reset ION Paste B В T U abe X2 X2 AV New Slide Аа A DIA Picture Convert to SmartArt Shapes Text Box Arrange Section Quick Styles Shape Outline Message Message Message Digital Signature Dipl Sipnature Hash Hash Example of a Complex Hybrid System Alice's Private Key Digest Digest Alice Bob's Public Key Bob's Private Key Bob AUTISKINDS Symmetric Key (E CT(k) Symmetric Key D 11 Uses of Digital Signatures • E-commerce • Non-repudiation of origin • Integrity of message Software distribution • Trusted time stamp E CT(m) Digital Signature D Message Message UNIVERSITY CUMHERLANDS H Alice's Private Key 12 E H Key: CT - Ciphertext E - Encrypt D-Decrypt H - Hash Function Example of a Complex Hybrid System Bob's Private kes ECTID → D Alice's Public Key Alice 式 Key (DP Digest Digest Digest Digest Digest Digest 1 ken nec 0 - Dec H-Function Digest Digest Disital Signature Baby Publike Digest Digital Signature ALLESRANDS Digest D E 13 Bob's Public Key Bob's Private Key Summary • Fundamentals of Hashing • Hashing is known as one-way encryption • Hashing produces a message digest or hash · Hashing produces a foued-length output no matter the length or size of the input • Purpose of Hashing • Hashing is designed to verify the integrity of a message • Hashing can assist a receiving party detect changes in a document or other piece of information that may otherwise remain unknown • Hashing is not a way to preserve the confidentiality of a message INIINDCITIV of Click to add notes UUMESRANDS 14 Summary . Applications of Hashing • Hashing is used in digital signatures • Hashing is used to verify the status of certain files, such as key system files or other data • Hashing is used to verify items, such as the status of antivirus updates or other types of files • Types of Hashing Algorithms • Hashing algorithms are known to the public and can be scrutinized • Hashing algorithms are used to determine how the creation and evolution of a has will be done • Algorithms that are in use today include SHA, MDS, and others Slide 12 of 17 English (United States) Notes Comments 80% 로 4 S A Р 2. الالا O
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