枚举强名称CSP的容器名称

Question

我正在尝试找到一些有关如何(如果可能的话)枚举强名称CSP(加密服务提供程序)中的所有容器名称的信息.

实质上,当您键入时sn.exe -i key.snk MyContainerName,公钥和私钥对存储在所谓的"容器"中.稍后,在您的代码中,您可以指定容器名称AssemblyKeyNameAttribute,例如:

[assembly: AssemblyKeyName("MyContainerName")]

这将导致程序集在编译时签名.

我试图找出是否有可能以某种方式枚举所有容器名称.我正在为ReSharper编写一个插件,为InternalsVisibleTo属性提供代码完成.我还想为AssemblyKeyName属性提供代码完成,我将使用已知的容器名称预先填充列表.

这些信息是否可访问？

编辑:从IT Security StackExchange 对这个问题的评论中,有一个名为KeyPal的小工具的链接.运行此实用程序LM将转储本地计算机密钥存储区:

--------- KeyPal:  MACHINE store: 3 keycontainers ---------
[0] VS_KEY_F726FDF898BC4CB8
     Signature 1024
[1] IIS Express Development Certificate Container
     Exchange  1024
     CertE: CN=localhost
[2] MyContainerName
     Signature 1024
-------------------------------------------------

我可以看到[0]和[2]都是有效的容器名称AssemblyKeyName.但是,有[1]一个 - "IIS Express ...",它不是一个有效的容器.我如何区分它们？

Answer 1

这是一个示例代码,它有点像keypal工具一样.它枚举所有容器(对于本地机器),并从那里获得可以成为StrongNameKeyPairs的容器.通常,强名称密钥具有160字节长度的公钥(SHA1):

foreach (var kc in KeyUtilities.EnumerateKeyContainers("Microsoft Strong Cryptographic Provider"))
{
    CspParameters cspParams = new CspParameters();
    cspParams.KeyContainerName = kc;
    cspParams.Flags = CspProviderFlags.UseMachineKeyStore;
    using (RSACryptoServiceProvider prov = new RSACryptoServiceProvider(cspParams))
    {
        if (prov.CspKeyContainerInfo.Exportable)
        {
            var blob = prov.ExportCspBlob(true);
            StrongNameKeyPair kp = new StrongNameKeyPair(prov.ExportCspBlob(false));
            Console.WriteLine(kc + " pk length:" + kp.PublicKey.Length);
        }
    }
    Console.WriteLine();
}

...

public static class KeyUtilities
{
    public static IList<string> EnumerateKeyContainers(string provider)
    {
        ProvHandle prov;
        if (!CryptAcquireContext(out prov, null, provider, PROV_RSA_FULL, CRYPT_MACHINE_KEYSET | CRYPT_VERIFYCONTEXT))
            throw new Win32Exception(Marshal.GetLastWin32Error());

        List<string> list = new List<string>();
        IntPtr data = IntPtr.Zero;
        try
        {
            int flag = CRYPT_FIRST;
            int len = 0;
            if (!CryptGetProvParam(prov, PP_ENUMCONTAINERS, IntPtr.Zero, ref len, flag))
            {
                if (Marshal.GetLastWin32Error() != ERROR_MORE_DATA)
                    throw new Win32Exception(Marshal.GetLastWin32Error());
            }

            data = Marshal.AllocHGlobal(len);
            do
            {
                if (!CryptGetProvParam(prov, PP_ENUMCONTAINERS, data, ref len, flag))
                {
                    if (Marshal.GetLastWin32Error() == ERROR_NO_MORE_ITEMS)
                        break;

                    throw new Win32Exception(Marshal.GetLastWin32Error());
                }

                list.Add(Marshal.PtrToStringAnsi(data));
                flag = CRYPT_NEXT;
            }
            while (true);
        }
        finally
        {
            if (data != IntPtr.Zero)
            {
                Marshal.FreeHGlobal(data);
            }

            prov.Dispose();
        }
        return list;
    }

    private sealed class ProvHandle : SafeHandleZeroOrMinusOneIsInvalid
    {
        public ProvHandle()
            : base(true)
        {
        }

        protected override bool ReleaseHandle()
        {
            return CryptReleaseContext(handle, 0);
        }

        [DllImport("advapi32.dll")]
        private static extern bool CryptReleaseContext(IntPtr hProv, int dwFlags);

    }

    const int PP_ENUMCONTAINERS = 2;
    const int PROV_RSA_FULL = 1;
    const int ERROR_MORE_DATA = 234;
    const int ERROR_NO_MORE_ITEMS = 259;
    const int CRYPT_FIRST = 1;
    const int CRYPT_NEXT = 2;
    const int CRYPT_MACHINE_KEYSET = 0x20;
    const int CRYPT_VERIFYCONTEXT = unchecked((int)0xF0000000);

    [DllImport("advapi32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
    private static extern bool CryptAcquireContext(out ProvHandle phProv, string pszContainer, string pszProvider, int dwProvType, int dwFlags);

    [DllImport("advapi32.dll", SetLastError = true)]
    private static extern bool CryptGetProvParam(ProvHandle hProv, int dwParam, IntPtr pbData, ref int pdwDataLen, int dwFlags);
}

引用了以下命名空间:

using Microsoft.Win32.SafeHandles;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Security.Cryptography;