#region 文件描述// 描述：数字签名的Substring结构类
// 作者：鲍昊晟
// 时间：2012-7-2#endregion#region 类修改记录 : 每次修改一组描述// 修改描述：
// 修 改 人：
// 修改时间：#endregionusing System;
using System.Security.Cryptography.X509Certificates;namespace DTLEntAdministration.Common
{/// <summary>/// 数字签名的Substring结构/// </summary>public class X509CertificateSubstring{//CN=Shenzhen DriveTheLife Software Technology Co.Ltd, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Shenzhen DriveTheLife Software Technology Co.Ltd, L=Shenzhen, S=Guangdong, C=CN#region 私有字段private string _CN = string.Empty;private string _OU = string.Empty;private string _O = string.Empty;private string _L = string.Empty;private string _S = string.Empty;private string _C = string.Empty;#endregion#region 公共只读属性public string CN { get { return _CN; } }public string OU { get { return _OU; } }public string O { get { return _O; } }public string L { get { return _L; } }public string S { get { return _S; } }public string C { get { return _C; } }#endregionpublic X509CertificateSubstring() { }/// <summary>/// 将Substring字符串解析成结构体/// </summary>/// <param name="substring">Substring字符串</param>/// <returns>X509CertificateSubstring</returns>public static X509CertificateSubstring Parse(string substring){X509CertificateSubstring xcs = new X509CertificateSubstring();string[] items = substring.Split(',');foreach (var item in items){if (item.Trim().StartsWith("CN=")){xcs._CN = item.Trim().Substring(3); continue;}if (item.Trim().StartsWith("OU=")){xcs._OU = item.Trim().Substring(3); continue;}if (item.Trim().StartsWith("O=")){xcs._O = item.Trim().Substring(2); continue;}if (item.Trim().StartsWith("L=")){xcs._L = item.Trim().Substring(2); continue;}if (item.Trim().StartsWith("S=")){xcs._S = item.Trim().Substring(2); continue;}if (item.Trim().StartsWith("C=")){xcs._C = item.Trim().Substring(2); continue;}}return xcs;}/// <summary>/// 将Substring字符串解析成结构体,并返回数字签名存在与否/// </summary>/// <param name="pyFile">读取数字签名的文件的物理路径</param>/// <param name="xcs">X509CertificateSubstring</param>/// <returns>bool</returns>public static bool TryParse(string pyFile, out X509CertificateSubstring xcs){bool result = true;xcs = new X509CertificateSubstring();string SubstringCN = string.Empty;X509Certificate cert = null;try{cert = X509Certificate2.CreateFromSignedFile(pyFile);}catch (System.Security.Cryptography.CryptographicException ce){//没有数字签名,忽略此异常.result = false;}catch (Exception ex){result = false;throw ex;}if (cert != null){xcs = X509CertificateSubstring.Parse(cert.Subject);}return result;}}
}

        /// <summary>/// 获取数字签名的名称/// </summary>/// <param name="pyFile">读取数字签名的文件的物理路径</param>/// <returns>数字签名,如果没有数字签名则返回空字符串</returns>public static string GetX509CertificateSubstringCN(string pyFile){string SubstringCN = string.Empty;X509CertificateSubstring xcs;if (X509CertificateSubstring.TryParse(pyFile, out xcs)){SubstringCN = xcs.CN;}return SubstringCN;}