Difference between direct and arbitrated digital signatures

Develop a 12-slide PowerPoint presentation that will explain the properties of digital signatures, the difference between direct and arbitrated digital signatures, explain a suppress replay attack, and advantages and disadvantages of using digital signatures.
• Include diagrams and examples.
• Add appropriate speaker notes to each slide.
• Be sure to include a cover slide and reference slide in APA format in addition to the 12 main slides.