m32
Sign not show in acrobat
Hello, I have a similar problem/ When I signed pdf, it didn't show in acrobat but it show in chrome.
In chrome
In acrobat
not signed PDF: 411_Ивановская_Ксения_Александровна_Информатика_зачет_2MUmP4W.pdf Signed pdf: 411_Ивановская_Ксения_Александровна_Информатика_зачет_2MUmP4W-signed.pdf
My code(endesive v2.0.6 and python 3.8)
class PdfWorkerTwo:
def __init__(self, user, digital_certificate, file, sig_box, page_number=0, date=None, step=0):
self.user = user
self.page_number = page_number
self.sig_box = sig_box
self.step = step
if date is None:
self.date = timezone.localtime(timezone.now())
else:
self.date = date
self.pdf_file = file
self.pdf = b''
cert = digital_certificate
if cert:
self.password = digital_certificate.password
self.cert_path = digital_certificate.file
else:
raise APIException(detail='Подпись не загружена')
self.location = b'Kostroma'
self.contact = bytes(str(user.email), 'utf-8')
self.reason = b'Kostromskaya GSXA'
self.sign_step = False
@staticmethod
def eprint(error):
print(error, file=sys.stderr)
# @property
# def coords(self) -> tuple:
# """
# [x,y, Координаты левого нижнего угла
# x,y] Координаты правого верхнего угла
# TODO: перенести координаты в модель
# """
# if self.instance_type == 'rating_plan':
# return tuple([550, 520, 650, 550])
# elif self.instance_type == 'statement':
# return self.instance.sign_coords
# elif self.instance_type == 'order':
# return tuple([210, 520, 305, 550])
# elif self.instance_type == 'ind_plan':
# return tuple([210, 560, 305, 590])
# else:
# return tuple([0, 0, 0, 0])
def pdf_time(self) -> str:
date = datetime.datetime.utcnow() - datetime.timedelta(hours=12)
date = date.strftime("D:%Y%m%d%H%M%S+00'00'")
return date
@property
def page_size(self) -> str:
return "A4 landscape"
def draw(self):
template = get_template('sign.html')
render_pdf = template.render({'user': self.user, 'sign_date': self.date.strftime('%d.%m.%Y'),
'static_dir': settings.STATIC_ROOT})
file_path = settings.BASE_DIR / 'cert' / 'sign_pdfs' / str(str(self.user.id) + '.pdf')
f = file_path.open('wb+')
pisa.CreatePDF(render_pdf, dest=f)
f.close()
# @property
# def page_number(self) -> int:
# pdfReader = PdfFileReader(open(self.pdf_file.name, 'rb'))
# if self.step == 2:
# return 0
# return len(pdfReader.pages) - 1
# @property
# def instance_type(self) -> str:
# if self.instance._meta.model_name == apps.get_model('mrs', 'RatingPlan')._meta.model_name:
# return 'rating_plan'
# elif self.instance._meta.model_name == apps.get_model('mrs', 'CloseSubject')._meta.model_name:
# return 'statement'
# elif self.instance._meta.model_name == apps.get_model('mrs', 'Order')._meta.model_name:
# return 'order'
# elif self.instance._meta.model_name == apps.get_model('mrs', 'InduvidualPlan')._meta.model_name:
# return 'ind_plan'
# else:
# return 1
@property
def dct(self) -> dict:
return {
"aligned": 0,
"sigflags": 3,
# "sigflagsft": 132,
# "sigpage": 0,
"sigbutton": True,
"sigfield": "teacher",
"signform": True,
# "auto_sigfield": True,
"sigandcertify": True,
"signaturebox": (470, 840, 570, 640),
"signature": "Dokument podpisany cyfrowo ąćęłńóśżź",
# "signature_img": "signature_test.png",
"contact": "[email protected]",
"location": "Szczecin",
"signingdate": self.pdf_time(),
"reason": "Dokument podpisany cyfrowo aą cć eę lł nń oó sś zż zź",
"password": self.password,
}
def sign(self):
cert_path = BASE_DIR / str(self.cert_path)
p12 = load_pkcs12(cert_path.open('rb').read(), bytes(self.password, encoding='utf-8'))
self.draw()
pdf_for_img = Path(settings.BASE_DIR) / 'cert' / 'sign_pdfs' / str(str(self.user.id) + '.pdf')
images = convert_from_path(pdf_for_img, 600)
images[0].save(Path(settings.BASE_DIR) / 'cert' / 'sign_pngs' / str(str(self.user.id) + '.png'), 'PNG')
pdf_bytes = open(self.pdf_file.path, 'rb+').read()
signature = cms.sign(pdf_bytes, self.dct, p12.get_privatekey().to_cryptography_key(),
p12.get_certificate().to_cryptography(), [], 'sha256')
with open(self.pdf_file.path.replace('.pdf', '-signed.pdf'), 'wb') as file:
file.write(pdf_bytes)
file.write(signature)
signed_pdf = file
# copy = open(self.pdf_file.path, 'wb')
# copy.write(signed_pdf)
# copy.close()
return self.pdf_file
The document is signed but the validator shows a lot of errors. I do not know how acrobat should behave, but I had problems with incorrect digitally signed documents.
I don't know what to do to get acrobat to show the document.
The file:/devel/signed.pdf is not valid, error(s) : 6.2.2 : Action is forbidden, The AA field is forbidden for the Catalog when the PDF is a PDF/A 1.4 : Trailer Syntax error, /XRef cross reference streams are not allowed 1.2.3 : Body Syntax error, NeedAppearance is present with the value "true" 6.2.3 : Action is forbidden, "AA" must not be used in a Field dictionary 2.4.1 : Invalid Color space, The operator "rg" can't be used with CMYK Profile 3.1.11 : Invalid Font definition, MPDFAA+Helvetica: The CIDSet entry is missing for the Composite Subset 2.4.1 : Invalid Color space, The operator "rg" can't be used with CMYK Profile 2.4.1 : Invalid Color space, The operator "rg" can't be used with CMYK Profile 5.2.5 : Forbidden field in an annotation definition 6.2.3 : Action is forbidden, "AA" must not be used in a Field dictionary 5.2.5 : Forbidden field in an annotation definition 5.2.5 : Forbidden field in an annotation definition 5.2.5 : Forbidden field in an annotation definition 2.4.3 : Invalid Color space, /DeviceGray default for operator "TJ" can't be used without Color Profile
