PDFBlackbox package

PDFBlackbox includes the components and functions, related to PDF security.

With PDFBlackbox you can perform signing, timestamping, encryption, decryption and verification of PDF (Portable Document Format) documents.

PDFBlackbox includes the following components:

Component name Summary ElPDFDocument This class incapsulates all PDF-document security and compression functions. ElPDFSecurityHandler The base class for all PDF security handlers. ElPDFPasswordSecurityHandler This security handler provides support for password-based document encryption. ElPDFPublicKeySecurityHandler This security handler implements document encryption and signing using public key.

Supplementary classes included into PDFBlackbox are

Class name Summary ElPDFFileAttachment This class represents a single file attachment to the PDF document. ElPDFImage This class stores information about the document image. ElPDFSignature This class represents a signature made over PDF document. ElPDFSignatureWidgetProps This class provides functionality to store and manage the properties of the PDF signature widget. ElPDFPermissions This class stores information about user's permissions to PDF document. ElPDFPublicKeyRecipientGroup Provides functionality to manage a group of users with the same permissions to the PDF document. ElPDFPageInfo This class specifies properties of a single page in the PDF Document. ElPDFSignatureInfo This class specifies empty signature form field. ElPDFPublicKeyRevocationInfo This class stores revocation information about a PDF signature. ElPDFRequirement This class represents a Requirement entry to the document catalog. ElPDFRequirementHandler This class represents a PDF requirement handler. PDF fonts ElPDFCustomFont The base class for PDF fonts. ElPDFCustomFontObject The base class for all PDF font objects. ElPDFSimpleFont Represents a PDF simple font. ElPDFEncoding Represents an encoding dictionary for a PDF font. ElPDFFontDescriptor Represents a font descriptor of a PDF simple font. ElPDFCompositeFont Represents a PDF composite font. ElPDFCIDFont A CIDFont is a font-like structure which describes glyphs for the character collection of a composite font. ElPDFCIDSystemInfo A CIDSystemInfo is a dictionary which specifies ElPDFCIDFontCIDFont's character collection. ElPDFCIDFontDescriptor This class describes the default metrics of a CIDFont other than its glyph widths. ElPDFMetricW ElPDFMetricW class defines glyph widths in a CIDFont. ElPDFMetricW2 ElPDFMetricW class defines vertical metrics of a CIDFont.