mirror of
https://github.com/GeoffreyFrogeye/steginack.git
synced 2024-11-21 18:16:03 +01:00
79 lines
2.7 KiB
Python
Executable file
79 lines
2.7 KiB
Python
Executable file
#!/usr/bin/env python3
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from PIL import Image
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import argparse
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from eta import ETA
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get_bin = lambda x, n: x >= 0 and str(bin(x))[2:].zfill(n) or "-" + str(bin(x))[3:].zfill(n)
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# From http://stackoverflow.com/a/21732313/2766106
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def hideInFile(args):
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inim = Image.open(args.infile)
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hideim = Image.open(args.hidefile)
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assert inim.size == hideim.size, "Both image must be of the same size"
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assert 0 <= args.bits <= 8
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outim = Image.new('RGB', inim.size)
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eta = ETA(inim.size[0] * inim.size[1])
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for x in range(inim.size[0]):
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for y in range(inim.size[1]):
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incol = inim.getpixel((x, y))
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hidecol = hideim.getpixel((x, y))
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outcol = []
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for cp in range(len(incol)):
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inbyt = get_bin(incol[cp], 8)
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hidebyt = get_bin(hidecol[cp], 8)
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outbyt = list(inbyt)
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for bit in range(args.bits):
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outbyt[-bit - 1] = hidebyt[bit]
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outcol.append(int(''.join(outbyt), 2))
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outim.putpixel((x, y), tuple(outcol))
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eta.print_status(x * inim.size[1] + y)
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eta.done()
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inim.close()
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hideim.close()
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outim.save(args.outfile, 'PNG')
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def inverseFile(args):
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inim = Image.open(args.infile)
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outim = Image.new('RGB', inim.size)
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eta = ETA(inim.size[0] * inim.size[1])
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for x in range(inim.size[0]):
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for y in range(inim.size[1]):
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incol = inim.getpixel((x, y))
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outcol = []
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for cp in range(len(incol)):
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inbyt = get_bin(incol[cp], 8)
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outbyt = list(inbyt)
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for bit in range(8):
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outbyt[-bit - 1] = inbyt[bit]
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outcol.append(int(''.join(outbyt), 2))
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outim.putpixel((x, y), tuple(outcol))
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eta.print_status(x * inim.size[1] + y)
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eta.done()
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inim.close()
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outim.save(args.outfile, 'PNG')
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if __name__ == '__main__':
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parser = argparse.ArgumentParser(description="Hide an image inside another and decode images")
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parser.add_argument('infile', metavar='INFILE', type=str, help="Input file")
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subparsers = parser.add_subparsers(dest='action')
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subparsers.required = True
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hidep = subparsers.add_parser('hide')
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hidep.add_argument('hidefile', metavar='HIDEFILE', type=str, help="File to hide")
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hidep.add_argument('bits', metavar='BITS', type=int, help="Number of bits to use for hiding")
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hidep.set_defaults(func=hideInFile)
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inversep = subparsers.add_parser('inverse')
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inversep.set_defaults(func=inverseFile)
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parser.add_argument('outfile', metavar='OUTFILE', type=str, help="Output file")
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args = parser.parse_args()
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args.func(args)
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