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Laura Holmes

Laura Holmes is a computer science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Laura Holmes rather than just read about it. In short: Laura Holmes (1932–2016) was a career cryptanalyst and a 2011 Inductee into the NSA Hall of Honor. Biography Holmes was born to Leonard Locke Holmes, Sr. and Dorothy Pogue Holmes and graduated in 1948 from the Margaret Brent High School.

Key takeaways

  • Laura Holmes belongs to computer science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Laura Holmes to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Laura Holmes from memory before moving on to harder problems.

Reference excerpt

Laura Holmes (1932–2016) was a career cryptanalyst and a 2011 Inductee into the NSA Hall of Honor.

Biography Holmes was born to Leonard Locke Holmes, Sr. and Dorothy Pogue Holmes and graduated in 1948 from the Margaret Brent High School. She joined the National Security Agency (NSA) where, for more than four decades, she worked at Fort Meade, Maryland as a cryptanalyst and supervisor.

Career During the 1980s, her work did in cryptographic code, including against a series of challenging manual cryptosystems, allowed Holmes to build an impressive range of expertise in a variety of target languages. At Fort Meade, she analyzed many dozens of manual systems from many targets and became notable because none of them were monoalphabetic (called a substitution cipher) and each required the cryptanalyst to discover a nontrivial trick, thus making de-coding particularly difficult. In addition, many of these codes were accompanied by only small quantities of traffic resulting in few examples to analyze. Holmes became known for tackling these challenges, and she showed an impressively high rate of success.

As a cryptanalysis teacher and supervisor, Holmes passed on to her students and interns her own pragmatic application of technique and knowledge. Using her extensive knowledge of both classic systems as well as modern variants, she was known for conveying "as much target knowledge as her interns could absorb." In addition, she passed on to her students her own accumulated knowledge of the target nations' current events, culture and military structure, all of which her students could find helpful in their cryptographic work. According to the NSA:On at least one occasion she was instrumental in re-establishing the ability to work against a long-dormant analytic problem. Her memory for facets of different systems was legendary, and she was meticulous in preserving the knowledge she had gained by analysis. Holmes reportedly said, when asked about her codebreaking success, that there was:

“Nothing miraculous about it. I spent two years learning to speak Russian, two years learning to think Russian, two years learning to understand what experience, what arrogance, and what hubris they would bring to bear, and then I spent the rest of my career waiting for them to do that.”

Hall of Fame induction In 2011, Holmes was inducted into the NSA/Central Security Service Hall of Honor which acknowledges the contributions of "pioneers and heroes who have rendered distinguished service to American cryptology." Her induction included a summary of her contribution.A career cryptanalyst who inspired and motivated her students and colleagues with her patience and persistence in solving some of the most difficult cryptanalytic problems in the late 20th century. Her remarkable qualities and legendary ability to remember facets of different systems were often the difference between success and failure. Holmes died on March 7, 2016, in Maddox, Maryland and was buried in All Saints Episcopal Church Cemetery, Oakley.

References

External links Women in Cryptography booklet.

Worked examples

Example 1 — a first encounter with Laura Holmes

Start with the simplest possible case. Write down what Laura Holmes claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Laura Holmes before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Laura Holmes ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Laura Holmes

In research
Laura Holmes appears in computer science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Laura Holmes in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Laura Holmes is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1932 births, 2016 deaths, American cryptographers, so understanding it makes those chapters shorter.
In everyday life
Look for Laura Holmes outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Laura Holmes in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Laura Holmes means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Laura Holmes out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Laura Holmes in simple terms?

Laura Holmes (1932–2016) was a career cryptanalyst and a 2011 Inductee into the NSA Hall of Honor. Biography Holmes was born to Leonard Locke Holmes, Sr. and Dorothy Pogue Holmes and graduated in 1948 from the Margaret Brent High School.

Why does Laura Holmes matter?

Because it connects several computer science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Laura Holmes?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Laura Holmes.

Tags

  • 1932 births
  • 2016 deaths
  • American cryptographers
  • American women cryptographers
  • Modern cryptographers
  • National Security Agency cryptographers
  • National Security Agency people

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