c#-从bouncycastle导入RSA密钥有时会抛出“错误数据”

有时,(通常在.NET和有弹性的城堡之间是一个严重的问题),由有弹性的城堡生成的密钥不会导入到dotnet RSA加密提供程序中.

它只会抛出“DonnéesIncorrectes”；没有更多细节. (“错误数据”).我无法调试问题,因为有罪函数的实现似乎隐藏在CLR中(Utils._ImportKey()；参考源RSACryptoServiceProvider.cs：297).

我尝试更改“提供商”,但没有成功.

这里存在相同的问题..通过更改key或keysize可以解决：BouncyCastle RSAPrivateKey to .NET RSAPrivateKey;在我的单元测试中,它的密钥大小范围为512位到2048位,但未通过.

如何解决/调试这样的问题？不良数据意味着什么？

这是一个失败的测试用例：

[TestCase(
        "3130061425891827008704201520933220266588903615593292093008732204896232681270200769431823371565724812996700795538563485957721923348815282268698793938491993",//mod
        "65537",//pe
        "3130061425891827008704201520933220266588903615593292093008732204896232681270200769431823371565724812996700795538563485957721923348815282268698793938491993",//priv e
        "108172619413453999338304010966268975159507181290909920458641813606026415083917",//p
        "75249617574313725168879024231390763478340191084309820124417146187514704207891",//q
        "46308055148448439895562160789624828220320330169183342667312429963694967752481", //dp
        "237677507940292370873826357872619864199100043554818389089435727311526981263", //dq
        "4755193289666548078142536433103759575424135202658906348751587662200087509503"//qinv
    )]
    public void TestBadKeyForMicrosoft(string mo, string pe, string prive, string p, string q, string dp, string dq, string qinv)
    {
        var k = new RsaPrivateCrtKeyParameters(
            new BigInteger(mo),//mod
            new BigInteger(pe),//pe
            new BigInteger(prive),//priv e
            new BigInteger(p),//p
            new BigInteger(q),//q
            new BigInteger(dp),//dp
            new BigInteger(dq),//dq
            new BigInteger(qinv)//qinv
            );

        var dotNetRsa = Org.BouncyCastle.Security.DotNetUtilities.ToRSAParameters(k);
        //var rsaCsp = new RSACryptoServiceProvider(new CspParameters(24 /*PROV_RSA_AES */)) { PersistKeyInCsp = false };
        var rsaCsp = new RSACryptoServiceProvider() {PersistKeyInCsp = false};
        rsaCsp.ImportParameters(dotNetRsa);
    }

解决方法:

我想这只是个填充问题.

Bouncy-castle最新的GIT版本具有以下代码：

nb：在“ Nuget”版本(2011年)中未修复

public static RSAParameters ToRSAParameters(RsaPrivateCrtKeyParameters privKey)
{
   RSAParameters rp = new RSAParameters();
   rp.Modulus = privKey.Modulus.ToByteArrayUnsigned();
   rp.Exponent = privKey.PublicExponent.ToByteArrayUnsigned();
   rp.P = privKey.P.ToByteArrayUnsigned();
   rp.Q = privKey.Q.ToByteArrayUnsigned();
   rp.D = ConvertRSAParametersField(privKey.Exponent, rp.Modulus.Length);
   rp.DP = ConvertRSAParametersField(privKey.DP, rp.P.Length);
   rp.DQ = ConvertRSAParametersField(privKey.DQ, rp.Q.Length);
   rp.InverseQ = ConvertRSAParametersField(privKey.QInv, rp.Q.Length);
   return rp;
}

private static byte[] ConvertRSAParametersField(BigInteger n, int size)
{
   byte[] bs = n.ToByteArrayUnsigned();
   if (bs.Length == size)
      return bs;
   if (bs.Length > size)
      throw new ArgumentException("Specified size too small", "size");
   byte[] padded = new byte[size];
   Array.Copy(bs, 0, padded, size - bs.Length, bs.Length);
   return padded;
}

此代码不同于您在其他任何地方都能看到的代码,这些代码基本上可以复制/粘贴关键参数,并且不执行额外的填充步骤.

标签：rsa,bouncycastle,c
来源： https://codeday.me/bug/20191120/2046384.html