【学习园地】python图片隐写

infor = "passwd:2342432wdqfqsq"

def get_key(strr):    s = strr.encode("utf-8")    print(len(s)) # 获取长度这很重要在解密当中我们需要这个    str = ""    for i in range(len(s)):        str = str + bin(s[i]).replace('0b', '').zfill(8)    return str

def func(infor):    pic = Image.open(r"I:pythonProject9132134.png")    width = pic.size[0]    height = pic.size[1]    # 获取宽高    count = 0    key = get_key(infor)    keylen = len(key)    # print(keylen)    for h in range(0, height):        for w in range(0, width):            pixel = pic.getpixel((w, h))     # 返回该像素点三原色的二进制信息，形成一个数组            a = pixel[0]       #  R            b = pixel[1]      #  G            c = pixel[2]      #  B            if count == keylen:                break            a = a - mod(a, 2) + int(key[count])            count += 1            if count == keylen:                pic.putpixel((w, h), (a, b, c))                break            b = b - mod(b, 2) + int(key[count])            count += 1            if count == keylen:                pic.putpixel((w, h), (a, b, c))                break            c = c - mod(c, 2) + int(key[count])            count += 1            if count == keylen:                pic.putpixel((w, h), (a, b, c))                break            if count % 3 == 0:                pic.putpixel((w, h), (a, b, c))    pic.save(r"I:pythonProject9test.png")
def mod(x, y):    return x % y

le = 21new = r"I:pythonProject9test.png"

def func(le, pic):    b = ""    im = Image.open(pic)    lenth = le * 8    width = im.size[0]    height = im.size[1]    count = 0    for h in range(0, height):        for w in range(0, width):            pixel = im.getpixel((w, h))            if count % 3 == 0:                count += 1                b = b + str((mod(pixel[0], 2)))                if count == lenth:                    break            if count % 3 == 1:                count += 1                b = b + str((mod(pixel[1], 2)))                if count == lenth:                    break            if count % 3 == 2:                count += 1                b = b + str((mod(pixel[2], 2)))                if count == lenth:                    break        if count == lenth:            break    infor = ''    for i in range(0, len(b), 8):        stra = int(b[i:i + 8], 2)        infor = infor + chr(stra)        stra = ""    print(infor)
def mod(x, y):    return x % y;