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YouTube

Yes, You Too Can Break Crypto - Exploiting Common Crypto Mistakes

OWASP Foundation via YouTube

Overview

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Learn how to exploit common cryptographic mistakes in this course. The course aims to help you understand cryptography better and avoid typical errors. By the end of the course, you will be able to identify and exploit common mistakes in cryptography, such as Exclusive OR (XOR), randomness, one-time pads (OTP), stream ciphers, block ciphers, electronic code block (ECB), cipher block chaining (CBC), padding, integrity issues, authenticated encryption, and more. The teaching method involves a 54-minute talk covering various topics related to cryptography. This course is intended for individuals interested in cybersecurity, cryptography, and understanding common cryptographic vulnerabilities.

Syllabus

Intro
Why this talk • Cryptography: HARD
whoami • Past: software development
General recommendations
Common mistakes
Exclusive OR (XOR)
Randomness
One time pad (OTP)
One time? But why?
Stream cipher (more practical OTP)
Block cipher primitive
Electronic code block (ECB)
Cipher block chaining (CBC)
CBC decryption
Padding (for block ciphers)
What about integrity?
Bit flipping (stream cipher)
Bit flipping (block cipher, CBC mode)
Authenticated encryption
Hash vs KDF
Takeaways
Further learning

Taught by

OWASP Foundation

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