PublicKeySignatureType property (Secure PDF writer)
public PDFPublicKeySignatureType PublicKeySignatureType
Use this property to specify signature type.
This property has any sense only if the handler is used for signing.
Note: pstX509RSASHA1 signature type cannot be used when the document should be signed with certificate stored in Win32 system certificate storage or in PKCS#11 certificate storage with non-exportable private key. In this case, the only signature type supported is PKCS7SHA1.