Re: [libreoffice-users] Setting the hash for time stamping when create PDF

You may want to use a separate program to secure your document that 
meets the specification you want.

See https://freetsa.org/guide/libreoffice-time-stamping.html

Hope this helps

Paul


On 4/9/2017 5:49 PM, Vesselin Kolev wrote:
> Dear All,
>
> Since I cannot find a complete answer of my question neither in the
> LibreOffice Documentation nor on the Internet, I decided to forward it
> to this mailing list.
>
> Is there any way (even through external Java class) to specify the hash
> algorithm when requesting TSA based time stamp? At the present
> LibreOffice creates a time stamp request based on SHA1. But this hash
> algorithm is considered obsolete. Hence that automatically turns the
> time stamped PDF into insecure ones. Note that the same problem occurs
> with all signature produced by LibreOffice in general - no possibility
> to specify the parameters for creating the signature.
>
> Thank you very much in advance for your response!
>
> Best regards,
>
> Vesselin Kolev


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