I think you are quiet confused about signing and
certificate types.
P12 and PFX are just containers for private+public
keys.
CER, DER and so on are also just encoded certificates
- mostly only used for public keys however - but you
can also encode private keys of course.
It boils down that every container/encoding you
specified is always an X.509 certificate - just in
different forms.
It is up to you to create a construct to parse
CER/DER/P12 whatever to sign your pdf - itext has
nothing to do with it.
You could use bouncycastle for example to parse these
encoded certificates an get a generic PrivateKey or
PublicKey java object, which can be used for signing.
--- Nick Kowalewicz <[EMAIL PROTECTED]> wrote:
> Supported Signature Certificates..
>
> What are supported signature certificate types for
> signing a PDF using
> iText?
>
> ?.FDF {Acrobat FDF Data Exchange}
> ?.P7C {Certificate Message Syntax PKCS#7}
> ?.P7B {Cryptographic Message Syntax Standard}
> ?.CER {DER Encoded Binary X.509}
> ?.CER {Base 64 Encoded X.509}
> ?.P12 {Personal Information Exchange PKCS#12}
> ?.PFX {Personal Information Exchange PKCS#12}
>
> I have successfully signed a PDF with a .PFX
> certificate, but, could you
> give a simple example of how to sign a PDF with
> other types of certificates
> files using iText? {Ex: P7B, P7C, and CER}
>
>
>
> Thank you in advance!
>
>
> Regards,
>
>
> Nick K.
>
> >
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