See: Description
| Class | Description | 
|---|---|
| AccessPermission | This class represents the access permissions to a document. | 
| DecryptionMaterial | This class represents data required to decrypt PDF documents. | 
| PDCryptFilterDictionary | This class is a specialized view of the crypt filter dictionary of a PDF document. | 
| PDEncryptionDictionary | This class is a specialized view of the encryption dictionary of a PDF document. | 
| PDEncryptionManager | Deprecated Made deprecated by the new security layer of PDFBox. | 
| PDStandardEncryption | Deprecated Made deprecated by the new security layer of PDFBox. | 
| ProtectionPolicy | This class represents the protection policy to apply to a document. | 
| PublicKeyDecryptionMaterial | This class holds necessary information to decrypt a PDF document
 protected by the public key security handler. | 
| PublicKeyProtectionPolicy | This class represents the protection policy to use to protect
 a document with the public key security handler as described
 in the PDF specification 1.6 p104. | 
| PublicKeyRecipient | Represents a recipient in the public key protection policy. | 
| PublicKeySecurityHandler | This class implements the public key security handler
 described in the PDF specification. | 
| SecurityHandler | This class represents a security handler as described in the PDF specifications. | 
| SecurityHandlersManager | This class manages security handlers for the application. | 
| StandardDecryptionMaterial | Represents the necessary information to decrypt a document protected by
 the standard security handler (password protection). | 
| StandardProtectionPolicy | This class represents the protection policy to add to a document
 for password-based protection. | 
| StandardSecurityHandler | The class implements the standard security handler as decribed
 in the PDF specifications. | 
| Exception | Description | 
|---|---|
| BadSecurityHandlerException | This exception can be thrown by the SecurityHandlersManager class when
 a document required an unimplemented security handler to be opened. | 
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