Cryptopals: Set 1 – challenge 5
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Breaking encryption is fun. Building an encryption cipher is even more so! Let’s continue our Cryptopals journey with XOR.
Technology
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Cryptopals: Set 1 – challenge 4
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Now that we know how to crack a single-byte XOR cipher, let’s expand and crack even more through Cryptopals’ next challenge.
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Cryptopals: Set 1 – challenge 3
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Next up in our Cryptopals walkthrough is some frequency analysis against simple cryptographic keys. Let’s have some fun!
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Cryptopals: Set 1 – challenge 2
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Building on our cryptopals encoding work last time, let’s introduce byte-based XOR operations.
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Cryptopals: Set 1 – challenge 1
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Challenge 1 in the cryptopals suite is to juggle between Base64 and Hex encoding of byte strings. Let’s do just that, with value objects!
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The Cryptopals challenges
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Starting today I kick off a series on the cryptopals crypto challenges, with my implementations in PHP. Feel free to join in the fun!
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Do the dishes – right now
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Refactoring legacy code is like cleaning the dishes. Someone has to do it – hopefully before the stack of moldering waste falls on the floor.
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Technology cost analysis
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Cost analysis can be a tricky exercise in the technology space as not all costs are readily apparent during price shopping.
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The value of repetition
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There is value in every coding discipline, but repetition and practice should have a particular emphasis.
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Right to repair
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I will always support a consumer’s right to repair the things they own. It’s cheaper, sustainable, and far more rewarding than replacement.