What security properties are provided by updating the public key?
In step 2, why are the public keys periodically updated? What security properties are provided by updating the public key?
Apple Find My Protocol
Objective: Understanding the cryptography features of Apple’s ‘Find My’ protocol.
Submission: Answer the following questions within the word doc or create a separate document.
In June 2019, at the Worldwide Developers Conference (WWDC), Apple announced a new iOS and OSX feature called ‘Find My.’ Combining the features of Find My iPhone and Find My Friends into a single application. The summarized steps below are a description of how the protocol functions.
1. With at least two Apple devices, the user’s Apple devices create a shared private key communicated among them via end-to-end encryption.
2. Each pair of devices periodically creates a new secret key and public key pair using a deterministic algorithm applied to the previous secret key. This is also referred to as rotation of keys.
3. If Find My is enabled on a device, it emits its current public key via Bluetooth and other Apple devices nearby can pick up on the broadcast.
4. A device that has picked up a public key will then check its own location, encrypt the location using the public key, and upload this to Apple’s servers along with a hash of the public key.
5. With a different Apple device, a user can then query Apple’s servers with hashes of the public keys it has used to get the encrypted location associated with the hashed public key.
6. Using the original secret key, the user can decrypt and get the location of their lost device.
Read the description of the Find My protocol in the 2021 Apple’s Platform Security Manual (p. 139 – 142) https://manuals.info.apple.com/MANUALS/1000/MA1902/en_US/apple-platform-security-guide.pdf
Read the article explaining further detail of the protocol by The Wired
( https://www.wired.com/story/apple-find-my-cryptography-bluetooth/)
The questions below, consider potential attackers to include someone who has stolen the user’s device, other users who have Apple devices, and Apple employees with Find My database access.
Answer the following questions:
1.) In step 2, why are the public keys periodically updated? What security properties are provided by updating the public key?
2.) For the encryption in step 4, what security properties must the encryption algorithm have for this to be secure?
3.) Can you come up with ways to attack the Find My protocol even assuming that the cryptographic primitives used in the protocol are secure? Some ideas worth considering are who are the trusted parties/ devices in the protocol, and who generates what data in this protocol.
What sampling method will best help you to assess the working conditions of surgeons in your facility?
What sampling method will best help you to assess the working conditions of surgeons in your facility?
Scenario 2: As a healthcare administrator, you recently received a complaint from one of your operational managers that suggests there may be a wide range of dissatisfaction among surgeons working in your facility about the work conditions. As a result of this complaint, you decided you wanted to learn more about the challenges surgeons (21 in number) may be facing so you can do the right thing to improve their condition of service.
Based on this information, what sampling method will best help you to assess the working conditions of surgeons in your facility? Please give a clear rationale for the sampling methods chosen for this effort.
For both scenarios, consider addressing the following Points:
· Population
· Population unit
· Sampling methodology
· Sampling size
· Types of interviews (if any?)
· Strengths and weaknesses of sampling methodology?
Length: 1-3 pages, not including title and reference pages
Resources: Include a minimum of 3 scholarly resources.
What type of sampling methods will you use to assess patient satisfaction from the more than two million patients that visit your facility on a yearly basis
What type of sampling methods will you use to assess patient satisfaction from the more than two million patients that visit your facility on a yearly basis
Quantitative Analysis for Healthcare Managers
The purpose of this week’s assignment is to assess your understanding of the concept of sampling and how the knowledge of this concept can be applied in a healthcare services setting.
For this assignment, you will review two scenarios in a fictitious healthcare setting, and then provide your best response to each scenario.
Scenario 1: As a healthcare administrator of a popular healthcare facility in your community, you have been receiving news of unsubstantiated claims of poor customer service in your facility. To make matters worse, a news agency recently carried a news report that highlighted patient dissatisfaction with the quality of service they receive in your facility. As a result of this news, the board of directors and other key stakeholders in your organization met to discuss the matter. Based on the discussion, it was recommended that your healthcare facility conduct a survey of patients in your facility to learn more about the alleged claims of dissatisfaction. The board of directors is also interested in investing millions of dollars to improve any gaps by the proposed survey.
As the administrator of this healthcare facility, what type of sampling methods will you use to assess patient satisfaction from the more than two million patients that visit your facility on a yearly basis? Please give a clear rationale for the sampling methods chosen for this effort.
Describe the innovation and how it is disrupting the market
Describe the innovation and how it is disrupting the market
The purpose of this assignment is to identify and research a potential problem that technology could help to solve. The ultimate goal is to imagine where technology will be in 18-36 months and how it will solve problems. Technology is constantly growing exponentially. As entrepreneurs, you have opportunities to use this technology to solve grand problems within the world that would better the human condition.
Part 1
Identify at least three innovations that are currently disrupting an existing market. Write a 250-word summary (750 words total) describing each innovation, how it is changing the market, and the benefit it will provide. Include the following items:
- Describe the innovation and how it is disrupting the market.
- Explain what benefit the innovation provides.
- Describe what barriers limit the adoption of this new technology.
- Explain how many people are affected by the problem.
Based on the article, what do you believe is the essential element of how mobile design influences consumer shopping?
Essential element of how mobile design influences consumer shopping
After reading the journal article entitled The Effect of Mobile Marketing Design on Consumer Mobile Shopping, provide an overview and answer to the following discussion prompt:
1) Based on the article, what do you believe is the essential element of how mobile design influences consumer shopping?
The best writing services
2) Pick a mobile retail app of your choice as an example and relate it to the article. What of this mobile app design do you think this retailer does well to engage consumer shopping well? What could they do better?
How might the idea of rhetoric as identification help us understand the kinds of polarization that can occur on social media?
How might the idea of rhetoric as identification help us understand the kinds of polarization that can occur on social media
Read chapter 7 attached! Tell me what you gathered from it or use the guided questions.
Some questions to consider:
–In light of Burke’s argument about rhetoric as identification, is the process of a speaker persuading an audience ultimately more of an internal process within the listeners? Can persuasion occur if the audience doesn’t own or internalize the persuasion?
–How might the idea of rhetoric as identification help us understand the kinds of polarization that can occur on social media?
–Identification can be a powerful force of peer pressure, goading people to think or behave in ways they see as aligned with their group’s values. But what happens to this peer pressure when there is an internal sense of ideological dissonance?
Within politics, for example, Blue Dog Democrats are known as relatively moderate Democrats who align with the Democratic Party on most issues but who may differ on certain issues like gun control or abortion. On the Republican side, Log Cabin Republicans have historically aligned with the Republican Party on most issues, but they are staunchly pro-LGBT+ rights. What should someone do when they feel a sense of ideological dissonance within their identity group?
–Thinking about Burke’s concept of redemption from guilt, what are some contemporary examples in which such redemption has successfully occurred? In which cases was the redemption tragic and in which cases comic
Identify penguins from the team in the book that relate to individuals involved in the step you’ve described
Identify penguins from the team in the book that relate to individuals involved in the step you’ve described
After reading Our Iceberg is Melting, consider Kotter’s “Eight-Step Process of Successful Change” in relation to Evidenced Based Practice . Think about a relevant evidence-based practice change occurring on your unit currently or in the past. (Don’t have a good example? It’s ok to come up with a hypothetical one based on experiences on your unit for this assignment.)
I currently work on a inpatient psychiatric unit
What was done well?
Identify one of the eight steps that was done well in your scenario.
- Describe in detail how this step was accomplished.
- Identify penguins from the team in the book that relate to individuals involved in the step you’ve described. What roles did they play on the team on your unit?
What was not done well?
Identify one of the eight steps that was not done well in this scenario – perhaps, an opportunity missed.
- Describe in detail how this step actually played out and how it could have been done better.
Examine Alexa’s skill in ordering drinks from Starbucks
Examine Alexa’s skill in ordering drinks from Starbucks.
Which Activity Orientation (being, becoming or doing) defines how the Aborigines view human actions?
Which Activity Orientation (being, becoming or doing) defines how the Aborigines view human actions?
· Explain your answer with SPECIFIC examples from the essay.
· Summarize this theory defining each orientation.
Question 5:
in detail, summarize at length the video “What it means to be a leader in different cultures” and relate it to ANY aspect of the course you wish.
Video:
What it means to be a leader in different cultures (linkedin.com)
