Does PDFNet’s digital signatures API conform to PAdES standard?
PDFNet’s digital signatures API provides great control and flexibility for clients to implement digital signing tasks. By extending the SignatureHandler interface, users are free to use any digital signature algorithm and standards. Our sample (DigitalSignaturesTest) produces PCKS#7 format signature with attached certificate with the signing method of “adbe.pkcs7.detached”. This signing method can produce PAdES basic profile compliant signature. PDFNet’s digital signatures API always feeds the SignatureHandler with the whole byte range of the file, skipping only the signature dictionary’s bytes.