computer science

Paul Carl Kocher

Paul Carl Kocher 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 Paul Carl Kocher rather than just read about it. In short: Paul Carl Kocher (born June 11, 1973) is an American cryptographer and cryptography entrepreneur who founded Cryptography Research, Inc. (CRI) and served as its president and chief scientist.

Key takeaways

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

Reference excerpt

Paul Carl Kocher (born June 11, 1973) is an American cryptographer and cryptography entrepreneur who founded Cryptography Research, Inc. (CRI) and served as its president and chief scientist.

Education and early life Kocher grew up in Oregon. He received a bachelor's degree in biology from Stanford University in 1995, where he worked part-time with Martin Hellman. According to Hellman, Kocher is mostly self-taught in cryptography and already knew an amazing amount when they first met in Kocher's sophomore year. As demand for Kocher's knowledge in cryptography escalated, he gave up on his original plan to become a veterinarian and founded CRI instead.

Career and research Kocher was awarded the 2019 Marconi Prize with Taher Elgamal for architecting the Secure Sockets Layer (SSL) 3.0/Transport Layer Security (TLS) 1.0 protocol, a cryptographic protocol for secure communications on the Internet. He pioneered the field of side-channel attacks, including the development of timing attacks that can break implementations of RSA, DSA and fixed-exponent Diffie–Hellman that operate in non-constant time, as well as the co-development of power analysis and differential power analysis. His side-channel attack countermeasure designs are widely deployed in secure integrated circuits and other cryptographic devices. He has also worked on microprocessor security, and co-discovered and named the spectre vulnerability, which leverages speculative execution and other microprocessor performance optimizations to extract confidential information. He also helped architect security-related integrated circuits, including Deep Crack, a DES brute-force key search machine.

Honors and awards Kocher was elected to the U.S. National Academy of Engineering in 2009 for his contributions to cryptography and Internet security. He serves on the National Academies' Forum on Cyber Resilience. In 2018, Kocher was named a Fellow of the International Association for Cryptologic Research for "fundamental contributions to the study of side-channel attacks and countermeasures, cryptography in practice, and for service to the IACR." Kocher and Taher Elgamal were jointly awarded the 2019 Marconi Prize for "their development of SSL/TLS and other contributions to the security of communications". Kocher was awarded the 2023 Levchin Prize for "pioneering work on side channel analysis."

References

External links Official website Kocher's page on Rambus, Inc.'s site Slashdot interview with Kocher Deprecated link at archive.today (archived 2013-01-19) National Academies announcement video interview with Kocher

Illustrations

Worked examples

Example 1 — a first encounter with Paul Carl Kocher

Start with the simplest possible case. Write down what Paul Carl Kocher 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 Paul Carl Kocher 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 Paul Carl Kocher 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 Paul Carl Kocher

In research: Paul Carl Kocher 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 Paul Carl Kocher 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: Paul Carl Kocher is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1973 births, American cryptographers, Cryptographer stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Paul Carl Kocher 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.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Paul Carl Kocher” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Paul Carl Kocher in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Paul Carl Kocher 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 Paul Carl Kocher out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Paul Carl Kocher in simple terms?

Paul Carl Kocher (born June 11, 1973) is an American cryptographer and cryptography entrepreneur who founded Cryptography Research, Inc. (CRI) and served as its president and chief scientist.

Why does Paul Carl Kocher 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 Paul Carl Kocher?

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 Paul Carl Kocher.