Crytography Security Hash Function & Digital Signatures Authentication

in /by

Crytography Security Hash Function & Digital Signatures Authentication

In 8–10 slides

As you educate the security staff on cryptographic concepts, you will soon make recommendations for the tools that will be appropriate for this company. You will address the topic of digital signatures with the staff. Present the concepts of digital signatures in an 8–10-slide PowerPoint presentation with speaker notes. The presentation should include an explanation of the topic with examples. The presentation should cover the following topics:

  • What properties should a digital signature have?
  • What is the difference between direct and arbitrated digital signatures?
  • What is a suppress-replay attack?
  • What are the advantages and disadvantages of using digital signatures?

Be sure to reference all sources using APA format.

In a word document, 3–5 paragraphs

To gain a better understanding of hashing algorithms, download the DOS-based MD5 hashing utility from this Web site. A zip file will be downloaded, and you will need to unzip the files.

If you prefer, you can download a Windows-based utility—the MD5 & SHA-1 Checksum Utility—from this Web site.

Complete the following four steps:

  1. Create a file with some text in it, run the MD5 (or the MD5 & SHA) utility, and record your results.
  2. Edit the file, change something in the file, run the MD5 (or the MD5 & SHA) utility, and record your results.
  3. Edit the file again, and change the file back to its original contents. Run the MD5 (or the MD5 & SHA) utility, and record your results.
  4. Create a copy of the file, run the utility on both files, and record your results.

In 2–3 paragraphs, describe a hashing algorithm, how they work to ensure data integrity, and the differences between the MD5 and SHA utilities.

Also, in 1–2 paragraphs, share the results of the exercise. Describe the changes, if any, to the hash values and under what circumstances the hash value changed.

Be sure to document your references using APA format.

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