52 lines
1.5 KiB
Python
52 lines
1.5 KiB
Python
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from PIL import Image
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import numpy as np
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def string_to_binary(message):
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return ''.join(format(ord(char), '08b') for char in message)
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def embed_message(image_path, message, exifraw):
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# Open the image
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img = Image.open(image_path)
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# Convert image to numpy array
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img_array = np.array(img)
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# Flatten the array
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flat_array = img_array.flatten()
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# Convert message to binary
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binary_message = string_to_binary(message)
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# Check if the message can fit in the image
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if len(binary_message) > len(flat_array):
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raise ValueError("Message is too long to be embedded in this image")
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# Embed the message
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for i, bit in enumerate(binary_message):
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flat_array[i] = (flat_array[i] & 0xFE) | int(bit)
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# Reshape the array back to the original image shape
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stego_array = flat_array.reshape(img_array.shape)
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# Create a new image from the modified array
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stego_img = Image.fromarray(stego_array.astype('uint8'), img.mode)
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# Save the image
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stego_img.save(image_path, exif=exifraw)
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def extract_message(image_path, message_length):
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# Open the image
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img = Image.open(image_path)
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# Convert image to numpy array
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img_array = np.array(img)
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# Flatten the array
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flat_array = img_array.flatten()
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# Extract the binary message
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binary_message = ''.join([str(pixel & 1) for pixel in flat_array[:message_length * 8]])
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# Convert binary to string
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message = ''.join([chr(int(binary_message[i:i+8], 2)) for i in range(0, len(binary_message), 8)])
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return message
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