def generate_plaintexts():
    output = []
    n = 256 # no plaintexts
    ptext_length= 8 # 8 byte plaintext
    for i in range(n):
        ptext=""
        for j in range(ptext_length):
            ptext += str(bin(ord(random.choice(string.ascii_letters))))[2:]
        ptext=hex(int(ptext,2 ))
        output.append(ptext)
    return output