gistfile1.txt

from PIL import Image, ImageDraw  # Подключим необходимые библиотеки.


def add_zeroes(num):
    n = bin(num)[2:]
    c = 8 - len(n)
    return c * '0' + n


def create_encrypted(num, bit):
    b = []
    c = add_zeroes(num)
    for i in c:
        b.append(i)
    b[7] = bit
    return int(''.join(b), 2)


plain_text_bytes = ''
f = open('plain.jpg', 'rb')
c = f.read()
f.close()
for i in c:
    plain_text_bytes += add_zeroes(i)
max_len = len(plain_text_bytes)
print(plain_text_bytes)
image = Image.open("image.jpg")  # Открываем изображение.
draw = ImageDraw.Draw(image)  # Создаем инструмент для рисования.
width = image.size[0]  # Определяем ширину.
height = image.size[1]  # Определяем высоту.
pix = image.load()  # Выгружаем значения пикселей.
current = 0

for i in range(height):
    for j in range(width):
        pixel = pix[j, i]
        a = pixel[0]
        b = pixel[1]
        c = pixel[2]
        if current < max_len:
            a = create_encrypted(a, plain_text_bytes[current])
            current += 1
        if current < max_len:
            b = create_encrypted(b, plain_text_bytes[current])
            current += 1
        if current < max_len:
            c = create_encrypted(c, plain_text_bytes[current])
            current += 1
        draw.point((j, i), (a, b, c))

image.save("encrypted.jpg", "JPEG")