js loop array
var colors = ["red","blue","green"]; for (var i = 0; i < colors.length; i++) { console.log(colors[i]); }
js loop array
var colors = ["red","blue","green"]; for (var i = 0; i < colors.length; i++) { console.log(colors[i]); }
javascript loop array
from Crypto.Cipher import AES from Crypto.Random import get_random_bytes from binascii import hexlify, unhexlify from hashlib import md5 import os import signal from flag import flag keys = [md5(os.urandom(3)).digest() for _ in range(3)] def get_ciphers(iv1, iv2): return [ AES.new(keys[0], mode=AES.MODE_ECB), AES.new(keys[1], mode=AES.MODE_CBC, iv=iv1), AES.new(keys[2], mode=AES.MODE_CFB, iv=iv2, segment_size=8*16), ] def encrypt(m: bytes, iv1: bytes, iv2: bytes) -> bytes: assert len(m) % 16 == 0 ciphers = get_ciphers(iv1, iv2) c = m for cipher in ciphers: c = cipher.encrypt(c) return c def decrypt(c: bytes, iv1: bytes, iv2: bytes) -> bytes: assert len(c) % 16 == 0 ciphers = get_ciphers(iv1, iv2) m = c for cipher in ciphers[::-1]: m = cipher.decrypt(m) return m signal.alarm(3600) while True: print("==== MENU ====") print("1. Encrypt your plaintext") print("2. Decrypt your ciphertext") print("3. Get encrypted flag") choice = int(input("> ")) if choice == 1: plaintext = unhexlify(input("your plaintext(hex): ")) iv1, iv2 = get_random_bytes(16), get_random_bytes(16) ciphertext = encrypt(plaintext, iv1, iv2) ciphertext = b":".join([hexlify(x) for x in [iv1, iv2, ciphertext]]).decode() print("here's the ciphertext: {}".format(ciphertext)) elif choice == 2: ciphertext = input("your ciphertext: ") iv1, iv2, ciphertext = [unhexlify(x) for x in ciphertext.strip().split(":")] plaintext = decrypt(ciphertext, iv1, iv2) print("here's the plaintext(hex): {}".format(hexlify(plaintext).decode())) elif choice == 3: plaintext = flag iv1, iv2 = get_random_bytes(16), get_random_bytes(16) ciphertext = encrypt(plaintext, iv1, iv2) ciphertext = b":".join([hexlify(x) for x in [iv1, iv2, ciphertext]]).decode() print("here's the encrypted flag: {}".format(ciphertext)) exit() else: exit()
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