computer science

Stafford Tavares

Stafford Tavares 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 Stafford Tavares rather than just read about it. In short: Stafford Emanuel Tavares is a Canadian cryptographer, professor emeritus at Queen's University. His notable work includes the design (with Carlisle Adams) of the block ciphers CAST-128 and CAST-256.

Key takeaways

Stafford Tavares 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 Stafford Tavares to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Stafford Tavares from memory before moving on to harder problems.

Reference excerpt

Stafford Emanuel Tavares is a Canadian cryptographer, professor emeritus at Queen's University. His notable work includes the design (with Carlisle Adams) of the block ciphers CAST-128 and CAST-256. He also helped organize the first Selected Areas in Cryptography (SAC) workshop in 1994. Since 2003, SAC has included an invited lecture in his honor, the Stafford Tavares Lecture. Tavares received his Ph.D. in 1968 from McGill University. In 2018 he was elected as a fellow of the International Association for Cryptologic Research, "for significant contributions to the design and analysis of block ciphers, for founding the SAC conference, and for service to the IACR".

References

External links Stafford Tavares publications indexed by Google Scholar

Worked examples

Example 1 — a first encounter with Stafford Tavares

Start with the simplest possible case. Write down what Stafford Tavares 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 Stafford Tavares 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 Stafford Tavares 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 Stafford Tavares

In research: Stafford Tavares 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 Stafford Tavares 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: Stafford Tavares is common in secondary-school and first-year university syllabi. It links to neighbouring topics Academic staff of Queen's University at Kingston, Canadian cryptographers, Cryptographer stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Stafford Tavares 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 Stafford Tavares in 20 minutes

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

Frequently asked questions

What is Stafford Tavares in simple terms?

Stafford Emanuel Tavares is a Canadian cryptographer, professor emeritus at Queen's University. His notable work includes the design (with Carlisle Adams) of the block ciphers CAST-128 and CAST-256.

Why does Stafford Tavares 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 Stafford Tavares?

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 Stafford Tavares.