Generate images of GPG signatures

run.py

import getpass
import gnupg

from PIL import Image, ImageFont, ImageDraw

g = gnupg.GPG()

data = raw_input('Tweet: ')
passphrase = getpass.getpass('Passphrase: ')

signature = str(g.sign(data, passphrase=passphrase, clearsign=False))

image = Image.new('RGB', (10000, 10000))
draw = ImageDraw.Draw(image)
font = ImageFont.truetype('Inconsolata-Regular.ttf', size=24)
height = 5
max_width = 0
size = (0, 0)

for line in signature.splitlines():
    # Leave a space for blank lines.
    if not line:
        height += size[1]
        pass

    size = font.getsize(line)
    draw.text((5, height), line, font=font)
    height += size[1]
    max_width = max(max_width, size[0] + 10)

image = image.crop((0, 0, max_width, height + 10))

image.save('test.jpg', 'JPEG')

print signature