Documents for PDF .NET Edition
GrapeCity.Documents.Pdf Assembly / GrapeCity.Documents.Pdf.Security Namespace / StandardSecurityHandlerRev4 Class
Properties Methods

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    StandardSecurityHandlerRev4 Class Members
    In This Topic

    The following tables list the members exposed by StandardSecurityHandlerRev4.

    Public Constructors
     NameDescription
    Public ConstructorInitialize a new instance of the StandardSecurityHandlerRev4 class.  
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    Public Properties
     NameDescription
    Public PropertyGets the access type granted by this StandardSecurityHandler, or null. This property is initialized when a document is loaded. (Inherited from GrapeCity.Documents.Pdf.Security.StandardSecurityHandler)
    Public PropertyGets or sets a value indicating whether a document's content can be copied or extracted. (Inherited from GrapeCity.Documents.Pdf.Security.StandardSecurityHandlerRev3)
    Public PropertyGets or sets a value used to determine whether content could be extracted for the purposes of accessibility.

    Note however that this restriction has been deprecated in PDF 2.0, which states that PDF readers shall ignore this bit. The default value of this property is true, and it should not be changed.

    (Inherited from GrapeCity.Documents.Pdf.Security.StandardSecurityHandlerRev3)
    Public PropertyGets or sets a value controlling how a document's content can be copied or extracted. (Inherited from GrapeCity.Documents.Pdf.Security.StandardSecurityHandlerRev3)
    Public PropertyGets or sets a value controlling how a document can be edited. (Inherited from GrapeCity.Documents.Pdf.Security.StandardSecurityHandlerRev3)
    Public PropertyGets or sets the encryption algorithm to use.  
    Public PropertyGets or sets the length of the encryption key, in bits. The value must be a multiple of 8, in the range from 40 to 128.

    IMPORTANT NOTE: StandardSecurityHandlerRev4 can use RC4 or AES encryption, and according to specification, with RC4 any key length in the range from 40 to 128 can be used. But tests show that current/recent versions of Adobe Acrobat Reader DC and Adobe Acrobat Pro DC cannot handle files encrypted with RC4 if the key length is not equal to 128. Older versions of Acrobat Reader handle such files without issues, so it looks like a bug in the newer versions of Acrobat Reader. So it is recommended that StandardSecurityHandlerRev3 is used in cases when RC4 encryption with key length other than 128 is required.

    (Inherited from GrapeCity.Documents.Pdf.Security.StandardSecurityHandlerRev3)
    Public PropertyGets or sets a value indicating whether the document-level metadata stream is to be encrypted.  
    Public PropertyGets or sets a value indicating whether streams should be encrypted.  
    Public PropertyGets or sets a value indicating whether strings should be encrypted.  
    Public PropertyGets or sets the password required to change permissions of a PDF document as a string.

    The two properties OwnerPassword and OwnerPasswordBytes allow to define the password as a string or as an array of bytes.

    According to the PDF specification, a string password should be converted to an array of bytes using the system code page (if the standard security handler with revision 4 or less is used). In some environments the system code page is unavailable, so GcPdf cannot perform this conversion. If the password string only contains ASCII chars, this does not present a problem. But if the password string contains non-ASCII Unicode characters, it is up to the developer to perform the conversion and set the password using this property. (Inherited from GrapeCity.Documents.Pdf.Security.StandardSecurityHandler)
    Public PropertyGets or sets the password required to change permissions of a PDF document as a byte array.

    The two properties OwnerPassword and OwnerPasswordBytes allow to define the password as a string or as an array of bytes.

    According to the PDF specification, a string password should be converted to an array of bytes using the system code page (if the standard security handler with revision 4 or less is used). In some environments the system code page is unavailable, so GcPdf cannot perform this conversion. If the password string only contains ASCII chars, this does not present a problem. But if the password string contains non-ASCII Unicode characters, it is up to the developer to perform the conversion and set the password using this property. (Inherited from GrapeCity.Documents.Pdf.Security.StandardSecurityHandler)
    Public PropertyGets or sets a value controlling how a document can be printed. (Inherited from GrapeCity.Documents.Pdf.Security.StandardSecurityHandlerRev3)
    Public PropertyGets the revision of this StandardSecurityHandler. (Inherited from GrapeCity.Documents.Pdf.Security.StandardSecurityHandler)
    Public PropertyGets or sets the password required to open a PDF document as a string.

    The two properties UserPassword and UserPasswordBytes allow to define the password as a string or as an array of bytes.

    According to the PDF specification, a string password should be converted to an array of bytes using the system code page (if the standard security handler with revision 4 or less is used). In some environments the system code page is unavailable, so GcPdf cannot perform this conversion. If the password string only contains ASCII chars, this does not present a problem. But if the password string contains non-ASCII Unicode characters, it is up to the developer to perform the conversion and set the password using UserPasswordBytes. (Inherited from GrapeCity.Documents.Pdf.Security.StandardSecurityHandler)
    Public PropertyGets or sets the password required to open a PDF document as a byte array.

    The two properties UserPassword and UserPasswordBytes allow to define the password as a string or as an array of bytes.

    According to the PDF specification, a string password should be converted to an array of bytes using the system code page (if the standard security handler with revision 4 or less is used). In some environments the system code page is unavailable, so GcPdf cannot perform this conversion. If the password string only contains ASCII chars, this does not present a problem. But if the password string contains non-ASCII Unicode characters, it is up to the developer to perform the conversion and set the password using this property. (Inherited from GrapeCity.Documents.Pdf.Security.StandardSecurityHandler)
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    Public Methods
     NameDescription
    Public MethodOverridden. Copies all property values from another object.  
    Public MethodCreate copy of this SecurityHandlerBase. (Inherited from GrapeCity.Documents.Pdf.Security.SecurityHandlerBase)
    Public MethodReleases the unmanaged resources used by the SecurityHandlerBase and optionally releases the managed resources. (Inherited from GrapeCity.Documents.Pdf.Security.SecurityHandlerBase)
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    See Also