Pdf |
Specifies what changes, made to the document after the signature was applied, invalidate the signature.
The AuthorPermission is specified by a certification signature (also known as an author signature) (PDF 1.5) which shall be the value of the first signed field in the document. It enables the author to specify what changes made to the document invalidate the author's signature.
The LockedFields is specified by either a certification signature or a regular, approval signature (also known as a recipient signature). It enables the signer to specify a set of form fields whose change invalidate the signature.
Other set of changes, such as those that invalidate a usage rights signature or an FDF file signature (the Identity transform method), are currently not exposed because they are deprecated.
Inheritance HierarchyNamespace: SautinSoft.Pdf.Forms
Assembly: SautinSoft.Pdf (in SautinSoft.Pdf.dll) Version: 2024.8.8
SyntaxThe PdfSignatureLock type exposes the following members.
Properties| Name | Description | |
|---|---|---|
 | AuthorPermission | Gets the permission, specified by a certification signature (also known as an author signature) (PDF 1.5), with which the author specifies what changes made to the document invalidate the author's signature. If the value is , then the signature does not specify a DocMDP transform method in this PdfSignatureLock, but some other. To set the AuthorPermission, sign the PdfSignatureField with a PdfSigner whose AuthorPermission is not . |
| LockedFields | Gets the set of form fields, specified by either a certification signature or a regular, approval signature (also known as a recipient signature), whose change invalidate the signature. If the value is , then the signature does not specify a FieldMDP transform method in this PdfSignatureLock, but some other. To set the LockedFields, use any SetLockedFields method before signing on a PdfSignatureField that holds the signature. |
| Metadata | (Optional; PDF 1.4) A metadata stream containing metadata for the component.
(Inherited from PdfObject) |
Methods| Name | Description | |
|---|---|---|
 | Equals | Determines whether the specified object is equal to the current object. (Inherited from Object) |
| GetHashCode | Serves as the default hash function. (Inherited from Object) |
| GetType | Gets the Type of the current instance. (Inherited from Object) |
| ToString | Returns a string that represents the current object. (Inherited from Object) |
Extension Methods| Name | Description | |
|---|---|---|
 | GetArray |
Gets the PdfArray that serves as a backing storage of the specified PdfObject or if no PdfArray serves as a backing storage of the specified PdfObject.
(Defined by PdfObjectExtensions) |
| GetDictionary |
Gets the PdfDictionary that serves as a backing storage of the specified PdfObject.
(Defined by PdfObjectExtensions) |
| GetOrAddDictionary |
Gets the PdfDictionary that serves as a backing storage of the specified PdfObject.
(Defined by PdfObjectExtensions) |
See Also