Crypto Challenges Write-ups

xorxorxor

27 Jan 2026 • 1 min read
Article

Exploiting xor with small key length

Rhome

27 Jan 2026 • 4 min read
Article

generator g operates within a very small subgroup of the prime field

Quantum_Safe

27 Jan 2026 • 3 min read
Article

Breaking Cipher using linear algebra

Protein_Cookies

27 Jan 2026 • 2 min read
Article

Exploiting a Hash Length Extension vulnerability

Embryonic_Plant

27 Jan 2026 • 3 min read
Article

challenge involves exploiting a custom Linear Congruential Generator where the RNG's parameters are derived from the prime factors of a multi-prime RSA modulus.

Baby_Time_Capsule

27 Jan 2026 • 2 min read
Article

Håstad's Broadcast Attack

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