ALL the CTFS of Crypto2025 finally

crypto-asimmetric/RSA-3/chall.py

@@ -0,0 +1,11 @@
+from Crypto.Util.number import bytes_to_long, getPrime
+from secret import flag
+import numpy as np
+
+primes = [getPrime(512) for _ in range(10)]
+mods = [np.random.choice(primes, 2, replace=False) for _ in range(6)]
+mods = [m[0]*m[1] for m in mods]
+e = 65537
+print(mods)
+m = bytes_to_long(flag.encode())
+print([pow(m, e, n) for n in mods])