> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On
> Behalf Of Starke, Rico
> Sent: Thursday, May 08, 2008 10:55 AM
> To: [email protected]
> Subject: [iText-questions] PDF Signatures: Field name of
> invisiblesignatures; configuring the hash function to use with PPKLITE
>
> Hi,
>
> can you help me with two questions regarding signatures?
>
> 1) Is there a way to set the field name when applying an invisible
> signature? For visible signatures, PDFSignatureAppearance offers two
> setVisibleSignature methods to accomplish this, but for invisible
> signatures, a default name seems to be used (like "Signature1").
>
Invisible signatures always have automatic names assigned. That's the
way Acrobat does.
> 2) Is it possible to use a hash function other than SHA-1
> when using the
> "self signed" filter (PPKLITE)? Or is PPKLITE technically limited to
> SHA-1?
>
No. The PDF specification only allows SHA-1 and 1024 bit RSA in that
mode.
Paulo
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