【RSA加密】PEM格式密钥转换成XML格式（方法二）

Nuget首先需要添加引用：Portable.BouncyCastle

 

 注意：密钥的开头和结尾的字符，如：-----BEGIN PUBLIC KEY-----，一定要单独一行，不然会报错：未将对象引用设置到对象的实例

 

 1         // GET: Test
 2         public ActionResult Index()
 3         {
 4             //pem格式公钥
 5             string publicKey = @"-----BEGIN PUBLIC KEY-----
 6 MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCN18bgncHY9Xq26vd9o7L9mSOH
 7 RBsMRem7ar3QGnfoQNYfNGTAYZrF26JvdRaFUy9RKItzYd8O2wXLib5Bc9yxZyoA
 8 qXuzMMY8ldBT+6fHSONYHFYKjVqrIY3YUQwuiff4LBPf/hD4XXkKqzY2o7WEQVHv
 9 dhsZZFbxnbCu6Ppi5wIDAQAB
10 -----END PUBLIC KEY-----";
11 
12             //pem格式私钥
13             string privateKey = @"-----BEGIN RSA PRIVATE KEY-----
14 MIICXAIBAAKBgQCjTtLZqou0r+vLvqVejf/90IknC0PLTwXFXUY+4QljjqNcNyb2
15 FHr2aTEl4mb+yOtHYRjx7HlHnWEbvNxvek4n56B2njhgjGQ1rhg2Z840vLgnmH3b
16 7GwVsapM5XXZPQh24KBmh9nbhj6R6hLzE+7LAOjAZalUB/C+Uu7ewlgJUwIDAQAB
17 AoGABGK5ht7toYyX6IDWMBPgLBDNnh7PU0ZsAUDgAhBJEENkX7WbdkBWjQeGKl5K
18 Jc1/hAs3gEe5ehLf6L7JrLS8JIsSTEODB9Zvq3bQmyr8jbqFKNihYsSmcpuleYmi
19 U3UkOId3IFMiRrdr4q9oOsHR+PPn/v5sJFEjyu/RVDe9swECQQDxDMRkHHl6r8zz
20 yDtPVOLZxQxlixvTd5TaoM1aP8FgGsVPTuGzUQaYSEJYJ0PfnugMPGGz7gAhzK/5
21 DGTm8uI/AkEArW+4XR7oBPnza8G6krI76YLoUgqxQYFpQz5Ffdls4ssfk7Ihl6Wn
22 TQB6JUdL/0Ku5pJZGyqja/FtPoAkwYQr7QJBAJFNYeD67RtQd5oH/ACBKdGdnzBi
23 n15kef0j60VYoydcW83HvfOKhxAqlptu59IXhsdBap+8eqXlLbpRh01T4Z8CQAF+
24 GKQUhAKm9AVVYXmptwJHciBinyvlJTbC7m4q1NkOznLC8a8QaeQrwOFZP7oupLqv
25 P70QHN/s7/e9upM/w/ECQBqf7ruwMc5+T8/BfsUQwHhvnibG7eEutAE0y1fFvZCD
26 dAhQ7l3g5VKbbvztdg+kRKObpAz4JgOXXnqufNFHvHY=
27 -----END RSA PRIVATE KEY-----";
28 
29             //xml格式公钥
30             string publicKeyXml = PemToXml(publicKey, false);
31             //xml格式私钥
32             string privateKeyXml = PemToXml(privateKey, true);
33 36             return View();
37         }
38 
39         /// <summary>
40         /// Pem格式密钥转换成Xml格式密钥
41         /// </summary>
42         /// <param name="pemKey">Pem格式密钥（公钥或私钥）</param>
43         /// <param name="isPrivateKey">是否是私钥</param>
44         /// <returns>转换后的Xml格式密钥（公钥或私钥）</returns>
45         public static string PemToXml(string pemKey, bool isPrivateKey)
46         {
47             string rsaKey = string.Empty;
48             object pemObject = null;
49             RSAParameters rsaPara = new RSAParameters();
50             using (StringReader sReader = new StringReader(pemKey))
51             {
52                 var pemReader = new Org.BouncyCastle.OpenSsl.PemReader(sReader);
53                 pemObject = pemReader.ReadObject();
54             }
55             //私钥
56             if (isPrivateKey)
57             {
58                 RsaPrivateCrtKeyParameters key = (RsaPrivateCrtKeyParameters)((AsymmetricCipherKeyPair)pemObject).Private;
59                 rsaPara = new RSAParameters
60                 {
61                     Modulus = key.Modulus.ToByteArrayUnsigned(),
62                     Exponent = key.PublicExponent.ToByteArrayUnsigned(),
63                     D = key.Exponent.ToByteArrayUnsigned(),
64                     P = key.P.ToByteArrayUnsigned(),
65                     Q = key.Q.ToByteArrayUnsigned(),
66                     DP = key.DP.ToByteArrayUnsigned(),
67                     DQ = key.DQ.ToByteArrayUnsigned(),
68                     InverseQ = key.QInv.ToByteArrayUnsigned(),
69                 };
70             }
71             //公钥
72             else
73             {
74                 RsaKeyParameters key = (RsaKeyParameters)pemObject;
75                 rsaPara = new RSAParameters
76                 {
77                     Modulus = key.Modulus.ToByteArrayUnsigned(),
78                     Exponent = key.Exponent.ToByteArrayUnsigned(),
79                 };
80             }
81             RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
82             rsa.ImportParameters(rsaPara);
83             using (StringWriter sw = new StringWriter())
84             {
85                 sw.Write(rsa.ToXmlString(isPrivateKey ? true : false));
86                 rsaKey = sw.ToString();
87             }
88             return rsaKey;
89         }

 

posted @ 2021-08-25 16:27  张伟大  阅读(1387)  评论(0)  编辑  收藏  举报