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blog.cryptographyengineering.com | ||
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rot256.dev
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| | | | | Introduction Pwnies at Copenhagen University arranged this years CTF at Bornhack. This is a short post detailing 2 of the crypto challenges I designed for this years CTF. Birthday-PRESENT The challenge (and solution) can be found on github The Sweet16 / birthday-PRESENT challenge is based on a variant of the Sweet32 vulnability, with a block cipher (small scale variant of PRESENT) having a block size of 32-bit, which makes the attack more practical. Participants were given the C source code of a server w... | |
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insinuator.net
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| | | | | In symmetric-key cryptography, we typically distinguish two types of encryption schemes: block ciphers and stream ciphers. Block ciphers divide a plaintext into blocks of a fixed size (e.g., 64 or 128 bits) and encrypt one such block of data as a whole. Stream ciphers, on the other hand, consider the plaintext as a continuous stream of data. The stream cipher maintains an internal state and in ... | |
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carterbancroft.com
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| | | | | These days, there are two major "categories" of encryption. Symmetric key encryption and Asymmetric key encryption. Today we're going to talk about the symmetric side of things. What is it? How does it work? Examples, etc. Let's dive in. What is it? Symmetric encryption is any cipher algorithm where plaintext | |
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www.syntaxbearror.io
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| | | Supply Chain Attack on MSPs leave thousands with ransomware, Print Spooler woes continue with Windows, and more on this week's episode of Bear Security. | ||
