使用RMS API 自定义Office（Word、Excel、PPT）加密策略

来源：互联网发布：gcr.io 阿里云编辑：程序博客网时间：2024/06/03 07:28

什么是RMS：

Microsoft Windows Rights Management 服务 (RMS），是一种与应用程序协作来保护数字内容（不论其何去何从）的安全技术，专为那些需要保护敏感的 Web 内容、文档和电子邮件的用户而设计。用户可以严格规定哪些用户可以打开、读取、修改和重新分发特定内容。组织可以创建权限策略模板，以实施用户应用于内容的策略。

准备工作1：

下载并添加引用以下3个DLL：

Microsoft.Office.Interop.Excel.dll
Microsoft.Office.Interop.PowerPoint.dll
Microsoft.Office.Interop.Word.dll
并在dll的属性中，把“嵌入互操作类型”设为False

添加以下引用：

在添加引用-程序集-扩展中，引用office
在添加引用-程序集-框架中，引用PresentationCore和PresentationFramework

准备工作2：

打开word或者Excel等office文件，在信息-保护文档-限制访问-选择连接到权限管理服务器并获取模版，登陆域账号，后续在RMS加密工作将会使用这个域账号进行：

代码：

EncryptFile.cs

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using Microsoft.Office.Core;namespace WindowsFormsApplication1{    class EncryptFile    {        /// <summary>        /// 加密Word        /// </summary>        /// <param name="filemodel">文件属性</param>        /// <param name="path">文件路径</param>        /// <returns>加密结果</returns>        public static bool EncryptWord(RMSFileModel filemodel, string path)        {            var wordClass = new Microsoft.Office.Interop.Word.ApplicationClass();            Microsoft.Office.Interop.Word.Document mydoc = wordClass.Documents.Open(filemodel.FSourcePath);            try            {                DateTime exprieDateTime = new DateTime(2027, 05, 19);                if (mydoc != null)                {                    mydoc.Activate();                    var irmPremission = mydoc.Permission;                    if (irmPremission.Enabled == true)                    {                        filemodel.FErrorMessage = "加密已加密的Word时错误";                        filemodel.FContent = "当前文档已经加密，操作失败!";                        return false;                    }                    mydoc.Application.Visible = false;                    irmPremission.Enabled = true;                    if (filemodel.Users != null && filemodel.Users.Length > 0)                    {                        foreach (var item in filemodel.Users)                        {                            if (!String.IsNullOrEmpty(ObjIsEmail(item)))                            {                                if (filemodel.FIsFullControl)                                {                                    irmPremission.Add(item, MsoPermission.msoPermissionFullControl, exprieDateTime);                                }                                if (filemodel.FIsPrint)                                {                                    irmPremission.Add(item, MsoPermission.msoPermissionPrint, exprieDateTime);                                }                                if (filemodel.FIsRead)                                {                                    irmPremission.Add(item, MsoPermission.msoPermissionRead, exprieDateTime);                                }                                if (filemodel.FIsSave)                                {                                    irmPremission.Add(item, MsoPermission.msoPermissionSave, exprieDateTime);                                }                                if (filemodel.FIsEdit)                                {                                    irmPremission.Add(item, MsoPermission.msoPermissionEdit, exprieDateTime);                                }                            }                        }                    }                    else                    {                        irmPremission.Add("Everyone", MsoPermission.msoPermissionEdit, exprieDateTime);                    }                }                string tempPath = path + filemodel.FTitle;                mydoc.SaveAs(tempPath);                filemodel.FRMSPath = tempPath;                filemodel.FContent = "加密成功";                return true;            }            catch (Exception ex)            {                filemodel.FErrorMessage = "加密Word时错误";                filemodel.FContent = ex.ToString();                return false;            }            finally            {                mydoc.Close();                wordClass.Quit();            }        }        /// <summary>        /// 加密Excel        /// </summary>        /// <param name="filemodel">文件属性</param>        /// <param name="path">文件路径</param>        /// <returns>加密结果</returns>        public static bool EncryptExcel(RMSFileModel filemodel, string path)        {            var excelClass = new Microsoft.Office.Interop.Excel.ApplicationClass();            var myExecl = excelClass.Workbooks.Open(filemodel.FSourcePath);            try            {                DateTime exprieDateTime = new DateTime(2027, 05, 19);                if (myExecl != null)                {                    myExecl.Activate();                    var irmPremission = myExecl.Permission;                    if (irmPremission.Enabled == true)                    {                        filemodel.FErrorMessage = "加密已加密的Excel时错误";                        filemodel.FContent = "当前文档已经加密，操作失败!";                        return false;                    }                    myExecl.Application.Visible = false;                    irmPremission.Enabled = true;                    if (filemodel.Users != null && filemodel.Users.Length > 0)                    {                        foreach (var item in filemodel.Users)                        {                            if (!String.IsNullOrEmpty(ObjIsEmail(item)))                            {                                if (filemodel.FIsFullControl)                                {                                    irmPremission.Add(item, MsoPermission.msoPermissionFullControl, exprieDateTime);                                }                                if (filemodel.FIsPrint)                                {                                    irmPremission.Add(item, MsoPermission.msoPermissionPrint, exprieDateTime);                                }                                if (filemodel.FIsRead)                                {                                    irmPremission.Add(item, MsoPermission.msoPermissionRead, exprieDateTime);                                }                                if (filemodel.FIsSave)                                {                                    irmPremission.Add(item, MsoPermission.msoPermissionSave, exprieDateTime);                                }                                if (filemodel.FIsEdit)                                {                                    irmPremission.Add(item, MsoPermission.msoPermissionEdit, exprieDateTime);                                }                            }                        }                    }                    else                    {                        irmPremission.Add("Everyone", MsoPermission.msoPermissionEdit, exprieDateTime);                    }                }                string tempPath = path + filemodel.FTitle;                myExecl.SaveAs(tempPath);                filemodel.FRMSPath = tempPath;                filemodel.FContent = "加密成功";                return true;            }            catch (Exception ex)            {                filemodel.FErrorMessage = "加密Excel时错误";                filemodel.FContent = ex.ToString();                return false;            }            finally            {                myExecl.Close();                excelClass.Quit();            }        }        /// <summary>        /// 加密PPT        /// </summary>        /// <param name="filemodel">文件属性</param>        /// <param name="path">文件路径</param>        /// <returns>加密结果</returns>        public static bool EncryptPPT(RMSFileModel filemodel, string path)        {            var pptClass = new Microsoft.Office.Interop.PowerPoint.ApplicationClass();            var myppt = pptClass.Presentations.Open(filemodel.FSourcePath, MsoTriState.msoCTrue, MsoTriState.msoCTrue, MsoTriState.msoFalse);            try            {                DateTime exprieDateTime = new DateTime(2027, 05, 19);                if (myppt != null)                {                    //myppt.Activate();                    var irmPremission = myppt.Permission;                    if (irmPremission.Enabled == true)                    {                        filemodel.FErrorMessage = "加密已加密的Excel时错误";                        filemodel.FContent = "当前文档已经加密，操作失败!";                        return false;                    }                    //myppt.Application.Visible = false;                    irmPremission.Enabled = true;                    if (filemodel.Users != null && filemodel.Users.Length > 0)                    {                        foreach (var item in filemodel.Users)                        {                            if (!String.IsNullOrEmpty(ObjIsEmail(item)))                            {                                if (filemodel.FIsFullControl)                                {                                    irmPremission.Add(item, MsoPermission.msoPermissionFullControl, exprieDateTime);                                }                                if (filemodel.FIsPrint)                                {                                    irmPremission.Add(item, MsoPermission.msoPermissionPrint, exprieDateTime);                                }                                if (filemodel.FIsRead)                                {                                    irmPremission.Add(item, MsoPermission.msoPermissionRead, exprieDateTime);                                }                                if (filemodel.FIsSave)                                {                                    irmPremission.Add(item, MsoPermission.msoPermissionSave, exprieDateTime);                                }                                if (filemodel.FIsEdit)                                {                                    irmPremission.Add(item, MsoPermission.msoPermissionEdit, exprieDateTime);                                }                            }                        }                    }                    else                    {                        irmPremission.Add("Everyone", MsoPermission.msoPermissionEdit, exprieDateTime);                    }                }                string tempPath = path + filemodel.FTitle;                myppt.SaveAs(tempPath);                filemodel.FRMSPath = tempPath;                filemodel.FContent = "加密成功";                return true;            }            catch (Exception ex)            {                filemodel.FErrorMessage = "加密PPT时错误";                filemodel.FContent = ex.ToString();                return false;            }            finally            {                myppt.Close();                pptClass.Quit();            }        }        /// <summary>        /// 清理Office进程        /// </summary>        public static void KillOfficeProcess()        {            try            {                var proWord = System.Diagnostics.Process.GetProcessesByName("WinWord");                foreach (var word in proWord)                {                    word.Kill();                }                var proExcel = System.Diagnostics.Process.GetProcessesByName("Excel");                foreach (var excel in proExcel)                {                    excel.Kill();                }                var proPPT = System.Diagnostics.Process.GetProcessesByName("POWERPNT");                foreach (var ppt in proPPT)                {                    ppt.Kill();                }            }            catch (Exception)            {                throw;            }        }        /// <summary>        /// Object判断并转为Email（String格式）        /// </summary>        /// <param name="o">Object</param>        /// <returns>Email</returns>        public static string ObjIsEmail(object o)        {            string email = ObjToStr(o);            if (!String.IsNullOrEmpty(email))            {                if (email.IndexOf("@") > -1)                {                    return email;                }                else                {                    return "";                }            }            else            {                return "";            }        }        /// <summary>        /// Object转String        /// </summary>        /// <param name="o">Object</param>        /// <returns>String</returns>        public static string ObjToStr(object o)        {            if (o == null)            {                return "";            }            else            {                return o.ToString();            }        }    }}

RMSFileModel.cs

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace WindowsFormsApplication1{    public class RMSFileModel    {        /// <summary>        /// 文件ID        /// </summary>        public int FID { get; set; }        /// <summary>        /// 完全控制        /// </summary>        public bool FIsFullControl { get; set; }        /// <summary>        /// 只读        /// </summary>        public bool FIsRead { get; set; }        /// <summary>        /// 打印        /// </summary>        public bool FIsPrint { get; set; }        /// <summary>        /// 另存        /// </summary>        public bool FIsSave { get; set; }        /// <summary>        /// 编辑        /// </summary>        public bool FIsEdit { get; set; }        /// <summary>        /// 文件名        /// </summary>        public string FTitle { get; set; }        /// <summary>        /// 在线URL路径（源文件路径）        /// </summary>        public string FUrlSourcePath { get; set; }        /// <summary>        /// 在线URL路径（加密后的文件路径）        /// </summary>        public string FUrlRMSPath { get; set; }        /// <summary>        /// 应用到用户        /// </summary>        public string[] Users { get; set; }        /// <summary>        /// 加密状态        /// </summary>        public string FState { get; set; }        /// <summary>        /// 加密错误分类        /// </summary>        public string FErrorMessage { get; set; }        /// <summary>        /// 加密详情        /// </summary>        public string FContent { get; set; }        /// <summary>        /// 本地物理路径（源文件）        /// </summary>        public string FSourcePath { get; set; }        /// <summary>        /// 本地物理路径（加密后的文件）        /// </summary>        public string FRMSPath { get; set; }    }}

调用：

/// <summary>        /// 执行加密操作        /// </summary>        /// <param name="fileModel">文件属性</param>        /// <returns>加密结果</returns>        private bool HandleRMS(RMSFileModel fileModel)        {            try            {                //确认路径及创建文件夹                string path = System.Windows.Forms.Application.StartupPath + "\\App_Data\\RMSFile\\";                if (!Directory.Exists(path))                {                    Directory.CreateDirectory(path);                }                //清理Office进程                EncryptFile.KillOfficeProcess();                string extension = Path.GetExtension(fileModel.FSourcePath).ToLower();//获取扩展名                if (extension.IndexOf("doc") > -1)                {                    return Common.EncryptFile.EncryptWord(fileModel, path);                }                if (extension.IndexOf("xls") > -1)                {                    return Common.EncryptFile.EncryptExcel(fileModel, path);                }                if (extension.IndexOf("ppt") > -1)                {                    return Common.EncryptFile.EncryptPPT(fileModel, path);                }                fileModel.FErrorMessage = "格式错误";                fileModel.FContent = "无法加密该格式的文件";                return false;            }            catch (Exception ex)            {                fileModel.FErrorMessage = "获取文件扩展名错误";                fileModel.FContent = ex.ToString();                return false;            }        }

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