Specifies the security level of the PDF document.
Namespace: PdfEdit.Pdf.Security
Assembly: PdfPrintingNet (in PdfPrintingNet.dll) Version: 5.1.1.0 (5.1.1.0)
Syntax
Members
| Member name | Value | Description | |
|---|---|---|---|
| None | 0 | Document is not protected. | |
| RC4_40 | 1 | Encrypted with RC4 using old weak algorithm based on 40 bit key. Not recommended. pdf_refeence_1-7.pdf: "Algorithm 3.1 on page 119, with an encryption key length of 40 bits; see below." Version: 1, Revision: 2 | |
| RC4_Custom | 2 | (PDF 1.4) Document is protected with RC4 algorithm and custom length encryption key between 40 and 128 bits. Version: 2, Revision: 3 | |
| RC4_128 | 3 | Document is protected with RC4 and 128-bit encryption key. This version uses crypt filters that may allow you to specify if metadata will get encrypted or not. Version: 4, Revision: 4 | |
| AES_128 | 4 | Document is protected with AES and 128-bit encryption key. Thus version uses crypt filters that may allow you to specify if metadata will get encrypted or not. Version: 4, Revision: 4 | |
| AES_256_Weak | 5 | Document is protected with AES weak/unsecure algorithm and 256-bit encryption key. Not recommended. This version uses crypt filters that may allow you to specify if metadata will get encrypted or not. INFO: This algorithm will be marked as deprecated in PDF 2.0 because of security issues. Version: 5, Revision: 5 | |
| AES_256 | 6 | Document is protected with AES and 256-bit encryption key. This version uses crypt filters that may allow you to specify if metadata will get encrypted or not. Version: 5, Revision: 6 |
See Also