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text_blind_watermark

Put message(blind watermark) into a text. so that the message is invisible, and the changes of the text are not perceptible.

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Can be used in

  • Wechat
  • dingding
  • zhihu.com
  • ...

How to Use

install

>pip install text_blind_watermark

embed message into text:

from text_blind_watermark import TextBlindWatermark2

password = '20190808'
text = '这句话中有盲水印,你能提取出来吗?'
watermark = 'github.com/guofei9987'

text_blind_wm = TextBlindWatermark2(password=password)

text_with_wm = text_blind_wm.embed(text=text, watermark=watermark)
print(text_with_wm)

extract message from text

text_blind_wm2 = TextBlindWatermark2(password=password)
wm_extract = text_blind_wm2.extract(text_with_wm)
print('提取内容:', wm_extract)

github.com/guofei9987

chr_type

You can choose different type to get better performance.

from text_blind_watermark import TextBlindWatermark2

password = '20190808'
text = '这句话中有盲水印,你能提取出来吗?'
watermark = 'github.com/guofei9987'

text_blind_wm = TextBlindWatermark2(password=password, chr_type=(3, 4))

text_with_wm = text_blind_wm.embed(text=text, watermark=watermark)
print(text_with_wm)

text_blind_wm2 = TextBlindWatermark2(password=password, chr_type=(3, 4))
wm_extract = text_blind_wm2.extract(text_with_wm)
print('提取内容:', wm_extract)
assert watermark == wm_extract

Another algorithm is more robust

Alice Put her text watermark into a text:

from text_blind_watermark import TextBlindWatermark

watermark = "绝密:两点老地方见!"
text = "这句话中有盲水印,你能提取出来吗?" * 16
password = "20190808"

twm = TextBlindWatermark(password=password)
twm.read_wm(watermark=watermark)
twm.read_text(text=text)
text_embed = twm.embed()

print("打上盲水印之后:")
print(text_embed)

Then, you can paste this text to where you need.

Bob Extract the invisible watermark

from text_blind_watermark import TextBlindWatermark
password = "20190808"

twm_new = TextBlindWatermark(password=password)
wm_extract = twm_new.extract(text_embed)
print("解出的盲水印:")
print(wm_extract)

Related Project

HideInfo:https://github.com/guofei9987/HideInfo

算法 说明
migrate tank 使图片在不同的背景下显示不同的图片
hide as image 把数据以图片形式存放
hide in image 把数据藏在一个图片中
image seed 把图片和文件黏在一起,并存为图片
EXIF 把一段信息放到图片的EXIF中
hide as music 把数据以音频的形式存放
hide in music 把数据隐藏在一个音频中
hide as text 把数据以文本文件的形式存放
hide in text 把数据隐藏在一段文本中