C# PDF加密
引用 Nuget itext7
using iText.Kernel.Pdf;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime;
using System.Text;
using System.Threading.Tasks;
namespace Common
{
public class PDFHepler
{
public enum EncryptionType
{
AES_256 = EncryptionConstants.ENCRYPTION_AES_256,
AES_128 = EncryptionConstants.ENCRYPTION_AES_128,
RC4_128 = EncryptionConstants.STANDARD_ENCRYPTION_128,
RC4_40 = EncryptionConstants.STANDARD_ENCRYPTION_40
}
/// <summary>
/// PDF加密
/// </summary>
/// <param name="inputPath">载入完整路径</param>
/// <param name="outputPath">保存完整路径</param>
/// <param name="password">密码</param>
public static void PDFEncrypt(string inputPath, string outputPath, string password)
{
// Set document options
int document_options = 0;
PdfReader reader = new PdfReader(inputPath); // Create a PdfReader with the input file.
WriterProperties prop = new WriterProperties(); // Set properties of output
prop.SetStandardEncryption(Encoding.ASCII.GetBytes(password), null, document_options, (int)EncryptionType.AES_256); // Enable encryption
PdfWriter writer = new PdfWriter(outputPath, prop); // Set up the output file
using (PdfDocument pdf = new PdfDocument(reader, writer))// Create the new document
{
}
//PdfDocument pdf = new PdfDocument(reader, writer); // Create the new document
//pdf.Close(); // Close the output document.
}
}
}