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digital signature

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  1. Can I add an image to a digitall signed pdf wit...

    I Would like to know if its possible to add a watermark or image or field to a Digitally signed pdf without invalidating the Signature. I have seen other libraries achieving this using incremental update in pdf with sign…...without invalidating the signature Aspose.PDF Product Family...watermark or image or field to a digitally signed pdf without invalidating...

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  2. "At least one signature requires validating" Af...

    I want to add an annotation into a signed PDF using Aspose PDF ver. 21.11.0.0. After adding the annotation to the PDF and open in an adobe reader, it will show the message “At least one Signature requires validating”. …..."At least one signature requires validating" After adding annotation...Family pdf-text-annotation , digitally-sign-pdf , aspose-pdf-net...

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  3. Signing PDF/A with LTV enabled showing invalid ...

    We are trying to convert the PDF file to PDFA. after converting the file using PDF/a we are Digitally sign pdf and enable the LTV option. as a out put we are receiving the error “document has been altered or corrupted si…...invalid signature Aspose.PDF Product Family digitally-sign-pdf...the file using PDF/a we are digitally sign pdf and enable the LTV...

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  4. Invalid Signature data after merging a PDF usin...

    We use Aspose PDF for Java v.19.6 to merge several documents in one PDF file. Looks like the generated PDF will contain invalid Signature data and is rejected by Adobe sign service due to invalid information. I noticed …...Invalid Signature data after merging a PDF using Aspose PDF for...Aspose.PDF Product Family digitally-sign-pdf tayes April 2, 2020...

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  5. Sign PDF using Aspose.PDF for .NET - No signatu...

    Hi Aspose team, We are using v20.3 lib. I signed an encrypted PDF, but there are no any Signature information in the generated PDF, and then I attempted to view the generated PDF using Adobe Acrobat Std 2017. Acrobat st…...NET - No signature information found in output...Aspose.PDF Product Family digitally-sign-pdf Glority_Developer...

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  6. Merge and Sign PDF files digitally in C# using ...

    Hello, We have been using Aspose.PDF to merge PDF files. We have found that multiple Signature invalid for merged PDF files. We have the following flow: Merge two PDF/A-1B files Sign result file with first Signature S…...files digitally in C# using Aspose.PDF for .NET - Signature becomes...have found that multiple signature invalid for merged PDF files...

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  7. Digitally sign a PDF document with an external ...

    I need the ability to sign the documents external. By export the hash to be signed and send it outsource (Mobile App, external server). And then receive the signed hash to be added to the document. Can your solution do …...Digitally sign a PDF document with an external signature Aspose...for your kind reference. Digitally sign PDF file Sign PDF Document...

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  8. PdfDigitalSignatureHashAlgorithm | Aspose.Tasks...

    PdfDigitalSignatureHashAlgorithm PdfDigitalSignatureHashAlgorithm enumeration Specifies Digital hash algorithm used b......Specifies digital hash algorithm used by digital signature. public...Specifies a digital hash algorithm used by a digital signature. Sha256...

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  9. Sign PDF document with local certificate using ...

    Hi Aspose team, I signed a PDF with a local certificate, then I attempted to view the signed PDF using Adobe Acrobat Std 2017. Acrobat states “At least one Signature is invalid”. If you drill down into the Signature det…...NET - At least one signature is invalid Aspose.PDF Product...Product Family digitally-sign-pdf Glority_Developer May 5, 2020...

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  10. PdfDigitalSignatureHashAlgorithm - Aspose.Tasks...

    Developer's manual that contains Java classes to work with Microsoft Project documents without utilizing Microsoft Project....Specifies digital hash algorithm used by digital signature. Nested...Specifies a digital hash algorithm used by a digital signature. static...

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