writeup
Alpaca CTF 2026: Equation Cipher
Recover the flag from a degree-30 polynomial product by factoring over ℚ with sympy, then handling the content absorption of two monic factors manually
#ctf
#crypto
#polynomial
+6 writeup
Alpaca CTF 2026: reused-n
Exploit a Common Modulus Attack on RSA with gcd(e1,e2)=2 and recover the flag via integer square root when m² < n
#ctf
#cryptography
#rsa
+3