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GroupDocs.Signature supports verification of documents for different signature types. This approach requires to add all required verification options to list.
Here are the steps to verify document for multiple signatures with GroupDocs.Signature:
- Create new instance of Signature class and pass source document path or stream as a constructor parameter.
- Instantiate required several VerifyOptions objects (BarcodeVerifyOptions, QrCodeVerifyOptions, DigitalVerifyOptions, TextVerifyOptions) and add instances to list of VerifyOptions.
- Call Verify method of Signature class instance and pass filled list of VerifyOptions to it.
This example shows how to search for different signature types in the document.
import groupdocs.signature as signature
from groupdocs.signature.options import (
TextVerifyOptions,
BarcodeVerifyOptions,
QrCodeVerifyOptions,
DigitalVerifyOptions
)
from groupdocs.signature.domain.enums import TextMatchType, TextSignatureImplementation
# Initialize signature
with signature.Signature("sampleSigned.pdf") as sign:
# Create text verification options
text_verify_options = TextVerifyOptions()
text_verify_options.all_pages = True # this value is set by default
text_verify_options.signature_implementation = TextSignatureImplementation.STAMP
text_verify_options.text = "John"
text_verify_options.match_type = TextMatchType.CONTAINS
# Create barcode verification options
barcode_verify_options = BarcodeVerifyOptions()
barcode_verify_options.all_pages = True # this value is set by default
barcode_verify_options.text = "John"
barcode_verify_options.match_type = TextMatchType.CONTAINS
# Create QR code verification options
qrcode_verify_options = QrCodeVerifyOptions()
qrcode_verify_options.all_pages = True # this value is set by default
qrcode_verify_options.text = "John"
qrcode_verify_options.match_type = TextMatchType.CONTAINS
# Create digital verification options
digital_verify_options = DigitalVerifyOptions("certificate.pdf")
digital_verify_options.comments = "Test comment"
# Create list of verification options
verify_options = [
text_verify_options,
barcode_verify_options,
qrcode_verify_options,
digital_verify_options
]
# Verify document signatures
result = sign.verify(verify_options)
if result.is_valid:
print("\nDocument was verified successfully!")
else:
print("\nDocument failed verification process.")
You may easily run the code above and see the feature in action in our GitHub examples:
Along with the full-featured Python library, we provide simple but powerful free online apps.
To sign PDF, Word, Excel, PowerPoint, and other documents you can use the online apps from the GroupDocs.Signature App Product Family.
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