FPDFSignatureObj_GetContents

[Gilmer Tavares]

Hello, I need an example using the FPDFSignatureObj_GetContents function, I was able to get the return, but I can't view the information. I needed to get the data of whoever signed the PDF, I'm not sure, but it seems that the return is PKCS#7, however, it doesn't seem to be valid. Thanks

Best Regards,

Gilmer Tavares

[Gilmer Tavares]

Hello,

I need an example using the FPDFSignatureObj_GetContents function, I was able to get the return, but I can't view the information.

I needed to get the data of whoever signed the PDF, I'm not sure, but it seems that the return is PKCS#7, however, it doesn't seem to be valid

[Miklos Vajna]

Hi,

On Fri, Apr 12, 2024 at 10:42:40AM -0700, Gilmer Tavares <gilmer...@gmail.com> wrote:
> I need an example using the FPDFSignatureObj_GetContents function, I was
> able to get the return, but I can't view the information.
>
> I needed to get the data of whoever signed the PDF, I'm not sure, but it
> seems that the return is PKCS#7, however, it doesn't seem to be valid

See if
https://github.com/vmiklos/odfsig/blob/d67934289c9f92faa2d3b7721658087af0ad62a5/pdfiumsig.cpp#L233-L235
helps.

Regards,

Miklos

[DJRecipe]

Gilmer,

Have you tried encoding it as base64, adding the "header" and "footer", and saving as a .p7b file? See here: https://en.wikipedia.org/wiki/PKCS_7

Cheers,

JD

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