Creating PDF/A with Digital Signature using itextsharp

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C#

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itextsharp

Hi,
I have created pdf/A and pdf with digital signature (using .pfx file) . But now i need pdf in PDF/A mode with digital signature.

is it possible ? i have tried a lot. but either it make pdf/A file or creating digital signature.
i need both in same file.

if any one have idea then please share with me.


Thanks in advance.


Regards