class final Core · roukmoute/pdf 0.6.2
PDF\Specification\Adobe\Dictionary\AdditionalEncryptionDictionaryEntriesForTheStandardSecurityHandlerTable3_19\UEntryAdobe table 3.19, /U; PDF type: string; Required.Inheritance and contracts
Parent : PDF\Specification\SchemaEntry
Definition in the Adobe supplement
Table 3.19 · Additional encryption dictionary entries for the standard security handler
PDF 1.7 · Adobe ExtensionLevel 3 · §3.5.2 · PDF page 17 ↗
/U string
(Required) A string based on the user password. The value of the string depends on the value of the revision number, the R entry described above. The value of R is 4 or less: A 32-byte string, based on the user password, that is used in determining whether to prompt the user for a password and, if so, whether a valid user or owner password was entered. The value for R is 5: (ExtensionLevel 3) A 48-byte string, based on the user password, that is used in determining whether to prompt the user for a password and, if so, whether a valid user password was entered. For more information, see “Password Algorithms” on page 126.
Qualifier: Required
Each entry preserves its ISO or Adobe source. Related rules and mechanisms are described in supplement coverage.
Construction
__construct()
public function __construct(PDF\Syntax\Object\StringType|PDF\Syntax\Object\IndirectReference $value)Inherited methods
3 methods from parents and contracts
definition()
public function definition(): PDF\Specification\EntryDefinitionkey()
public function key(): PDF\Syntax\Object\NameTypevalue()
public function value(): PDF\Syntax\FileStructure\BasicTypeProperties
| Declaration | Origin and documentation |
|---|---|
public readonly PDF\Syntax\Object\NameType $key | PDF\Syntax\Object\DictionaryObject\Entry |
public readonly PDF\Syntax\FileStructure\BasicType $value | PDF\Syntax\Object\DictionaryObject\Entry |