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#!/bin/env python
#Copyright ReportLab Europe Ltd. 2000-2016
#see license.txt for license details
__version__='3.3.0'
__doc__="""Testing to encrypt a very minimal pdf using a Canvas and a DocTemplate.
TODO: Automatiocally test that this pdf is really encrypted.
"""
import unittest
from reportlab.lib.testutils import setOutDir,makeSuiteForClasses, outputfile, printLocation
setOutDir(__name__)
from reportlab.pdfgen.canvas import Canvas
from reportlab.lib import pdfencrypt
from reportlab.lib.styles import ParagraphStyle
from reportlab.platypus import SimpleDocTemplate, Paragraph
def parsedoc(fileName):
"""
Using PDFParseContext object from Pagecatcher module to check for encryption.
"""
try:
from rlextra.pageCatcher.pageCatcher import PDFParseContext
except ImportError:
return
pdfContent = open(fileName, 'rb').read()
p = PDFParseContext(pdfContent, prefix="PageForms")
p.parse()
assert p.encrypt
def testStdEnc(expectedO,expectedU,expectedKey,
strength=40, overrideID='xxxxxxxxxxxxxxxx',
userPass='User',ownerPass='Owner',
):
# do a 40 bit example known to work in Acrobat Reader 4.0
enc = pdfencrypt.StandardEncryption(userPass,ownerPass, strength=strength)
enc.setAllPermissions(0)
enc.canPrint = 1
enc.prepare(None,overrideID)
pdfencrypt.equalityCheck(pdfencrypt.hexText(enc.O),expectedO, '%d bit O value'%strength)
pdfencrypt.equalityCheck(pdfencrypt.hexText(enc.U),expectedU, '%d bit U value'%strength)
pdfencrypt.equalityCheck(pdfencrypt.hexText(enc.key),expectedKey, '%d bit key value'%strength)
class EncryptTestCase(unittest.TestCase):
def test_canvas(self):
"Test generating an encrypted pdf by setting a user password on the Canvas."
fname = outputfile('test_encrypt_canvas.pdf')
c = Canvas(fname, encrypt='User')
c.setAuthor('Anonymous')
c.setFont('Helvetica-Bold', 36)
c.drawString(100,700, 'Top secret')
c.save()
parsedoc(fname)
def test_standardencryption(self):
"Test generating an encrypted pdf by passing a StandardEncryption object to the Canvas."
encrypt = pdfencrypt.StandardEncryption(userPassword='User', ownerPassword='Owner')
encrypt.setAllPermissions(0)
encrypt.canPrint = 1
fname = outputfile('test_encrypt_canvas2.pdf')
c = Canvas(fname, encrypt=encrypt)
c.setAuthor('Anonymous')
c.setFont('Helvetica-Bold', 36)
c.drawString(100,700, 'Top secret')
c.save()
parsedoc(fname)
def test_doctemplate(self):
"Test generating an encrypted pdf by setting a user password on the DocTemplate."
header = ParagraphStyle(name='Heading', fontSize=36)
story = [Paragraph("Top secret", header)]
fname = outputfile('test_encrypt_doctemplate.pdf')
doc = SimpleDocTemplate(fname, encrypt='User')
doc.build(story)
parsedoc(fname)
def test_standardencryption128(self):
"Test generating an encrypted pdf by passing a StandardEncryption object to the Canvas."
encrypt = pdfencrypt.StandardEncryption(userPassword='User', ownerPassword='Owner',strength=128)
encrypt.setAllPermissions(0)
encrypt.canPrint = 1
fname = outputfile('test_encrypt_canvas2_128.pdf')
c = Canvas(fname, encrypt=encrypt)
c.setAuthor('Anonymous')
c.setFont('Helvetica-Bold', 36)
c.drawString(100,700, 'More Top secret uses 128 bit encryption!')
c.save()
parsedoc(fname)
def test_calcs(self):
testStdEnc(
expectedO = '<FA7F558FACF8205D25A7F1ABFA02629F707AE7B0211A2BB26F5DF4C30F684301>',
expectedU = '<4E6F35A0356D6A624A72387D71FFB92EA4457E435307A9DD0BA9DE0618F5BABD>',
expectedKey = '<DC96439AD9>',
strength=40, overrideID='xxxxxxxxxxxxxxxx',
userPass='User',ownerPass='Owner',
)
testStdEnc(
expectedO = '<E60E73846B1C9EB09986B2C20DEAEF48BCC2210F75AE640655EDDFF8B67E7DD6>',
expectedU = '<D9E804E73FB37EDECF35176140304BD600000000000000000000000000000000>',
expectedKey = '<7C0C9D27068EB81B291698B2CC278A48>',
strength=128, overrideID='xxxxxxxxxxxxxxxx',
userPass='User',ownerPass='Owner',
)
testStdEnc(
expectedO = '<FA7F558FACF8205D25A7F1ABFA02629F707AE7B0211A2BB26F5DF4C30F684301>',
expectedU = '<CB749297C89784B4BC94228F38B5FD4318398CA68F327A615A6CD8A5FCDB8C52>',
expectedKey = '<1528D3A2F9>',
strength=40, overrideID=b'\xbf\x08\xdf\x96I\x959e\x8f\x03\xcb\xb4\x11 W\xa9',
userPass='User',ownerPass='Owner',
)
testStdEnc(
expectedO = '<E60E73846B1C9EB09986B2C20DEAEF48BCC2210F75AE640655EDDFF8B67E7DD6>',
expectedU = '<9A823CD6C39CEA508577319287621BF800000000000000000000000000000000>',
expectedKey = '<6F8DB99AA5D9693CA757C2F03DAB71FF>',
strength=128, overrideID=b'\xbf\x08\xdf\x96I\x959e\x8f\x03\xcb\xb4\x11 W\xa9',
userPass='User',ownerPass='Owner',
)
def makedoc(fileName, userPass="User", ownerPass="Owner"):
"""
Creates a simple encrypted pdf.
"""
encrypt = pdfencrypt.StandardEncryption(userPass, ownerPass)
encrypt.setAllPermissions(0)
encrypt.canPrint = 1
c = Canvas(fileName)
c._doc.encrypt = encrypt
c.drawString(100, 500, "hello world")
c.save()
class ManualTestCase(unittest.TestCase):
"Runs manual encrypted file builders."
def test(self):
filepath = outputfile('test_pdfencryption.pdf')
makedoc(filepath)
parsedoc(filepath)
def makeSuite():
return makeSuiteForClasses(EncryptTestCase,ManualTestCase)
#noruntests
if __name__ == "__main__":
unittest.TextTestRunner().run(makeSuite())
printLocation()
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