.NET下的加密解密大全（3）：非对称加密

本博文列出了.NET下常用的非对称加密算法，并将它们制作成小DEMO，希望能对大家有所帮助。

RSA

[csharp] view plain copy print ?

1. /* 作者：GhostBear  
2.    博客地址：Http://blog.youkuaiyun.com/ghostbear  
3. */  
4. static string EnRSA(string data,string publickey)  
5. {  
6.     RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();   
7.     byte[] cipherbytes;   
8.     rsa.FromXmlString(publickey);   
9.     cipherbytes = rsa.Encrypt(Encoding.UTF8.GetBytes(data), false);   
10.     return Convert.ToBase64String(cipherbytes);  
11.       
12. }  
13.   
14. static string DeRSA(string data,string privatekey)  
15. {  
16.      
17.     RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();   
18.     byte[] cipherbytes; rsa.FromXmlString(privatekey);   
19.     cipherbytes = rsa.Decrypt(Convert.FromBase64String(data), false);   
20.     return Encoding.UTF8.GetString(cipherbytes);  
21. }  

/* 作者：GhostBear 博客地址：Http://blog.youkuaiyun.com/ghostbear */ static string EnRSA(string data,string publickey) { RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(); byte[] cipherbytes; rsa.FromXmlString(publickey); cipherbytes = rsa.Encrypt(Encoding.UTF8.GetBytes(data), false); return Convert.ToBase64String(cipherbytes); } static string DeRSA(string data,string privatekey) { RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(); byte[] cipherbytes; rsa.FromXmlString(privatekey); cipherbytes = rsa.Decrypt(Convert.FromBase64String(data), false); return Encoding.UTF8.GetString(cipherbytes); }

调用代码

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1.   Console.WriteLine("RSA非对称加密");  
2. Byte[] iv = CreateKey(16);  
3. Byte[] key = CreateKey(27);  
4. string inputRSA_1 = inputString();  
5. RSA rsa = RSA.Create();  
6.   
7. string enData = EnRSA(inputRSA_1,rsa.ToXmlString(false));  
8.   
9.   
10. Console.WriteLine("加密后的数据：{0}", enData);  
11. Console.WriteLine("解密后的数据:{0}", DeRSA(enData,rsa.ToXmlString(true)));  

Console.WriteLine("RSA非对称加密"); Byte[] iv = CreateKey(16); Byte[] key = CreateKey(27); string inputRSA_1 = inputString(); RSA rsa = RSA.Create(); string enData = EnRSA(inputRSA_1,rsa.ToXmlString(false)); Console.WriteLine("加密后的数据：{0}", enData); Console.WriteLine("解密后的数据:{0}", DeRSA(enData,rsa.ToXmlString(true)));

 

DSA（数字签名）

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1.  /* 作者：GhostBear  
2.    博客地址：Http://blog.youkuaiyun.com/ghostbear  
3. */  
4.  static string EnDSA(string data,string publickey)  
5.    {  
6.        DSA dsa = DSA.Create();  
7.        Byte[] result;  
8.        dsa.FromXmlString(publickey);  
9.        SHA1 sha1 = SHA1.Create();  
10.        result = dsa.CreateSignature(sha1.ComputeHash(Convert.FromBase64String(data)));  
11.        return Convert.ToBase64String(result);  
12.   
13.          
14.    }  
15.   
16.    static bool DeDSA(string data,string privatekey,string originalData)  
17.    {  
18.        //Byte[] result;   
19.        DSA dsa = DSA.Create();  
20.        dsa.FromXmlString(privatekey);  
21.        SHA1 sha1 = SHA1.Create();  
22.        return dsa.VerifySignature(sha1.ComputeHash(Convert.FromBase64String(originalData)),Convert.FromBase64String(data));  
23.   
24.    }  

/* 作者：GhostBear 博客地址：Http://blog.youkuaiyun.com/ghostbear */ static string EnDSA(string data,string publickey) { DSA dsa = DSA.Create(); Byte[] result; dsa.FromXmlString(publickey); SHA1 sha1 = SHA1.Create(); result = dsa.CreateSignature(sha1.ComputeHash(Convert.FromBase64String(data))); return Convert.ToBase64String(result); } static bool DeDSA(string data,string privatekey,string originalData) { //Byte[] result; DSA dsa = DSA.Create(); dsa.FromXmlString(privatekey); SHA1 sha1 = SHA1.Create(); return dsa.VerifySignature(sha1.ComputeHash(Convert.FromBase64String(originalData)),Convert.FromBase64String(data)); }

调用代码

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1.   Console.WriteLine("DSA数字签名");  
2. string inputDSA_1 = inputString();  
3. string inputDSA_2 = inputDSA_1;  
4. DSA dsa = DSA.Create();  
5. string enData = EnDSA(inputDSA_1, dsa.ToXmlString(true));  
6.   
7. Console.WriteLine("加密后的数据：{0}", enData);  
8. Console.WriteLine("解密后的数据:{0}", DeDSA(enData, dsa.ToXmlString(false), inputDSA_2));  

Console.WriteLine("DSA数字签名"); string inputDSA_1 = inputString(); string inputDSA_2 = inputDSA_1; DSA dsa = DSA.Create(); string enData = EnDSA(inputDSA_1, dsa.ToXmlString(true)); Console.WriteLine("加密后的数据：{0}", enData); Console.WriteLine("解密后的数据:{0}", DeDSA(enData, dsa.ToXmlString(false), inputDSA_2));

 

 

ECDsa

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1. /* 作者：GhostBear  
2.    博客地址：Http://blog.youkuaiyun.com/ghostbear  
3. */  
4. static string EnECDsa(string data, CngKey key)  
5.  {  
6.      ECDsaCng ecdsa = new ECDsaCng(key);  
7.        
8.        
9.      SHA1 sha1 = SHA1.Create();  
10.      byte[] result;  
11.   
12.      result = ecdsa.SignHash(sha1.ComputeHash(Convert.FromBase64String(data)));  
13.   
14.      return Convert.ToBase64String(result);  
15.   
16.  }  
17.   
18.  static bool DeECDsa(string data, CngKey key,string originalData)  
19.  {  
20.      ECDsaCng ecdsa = new ECDsaCng(key);  
21.      SHA1 sha1 = SHA1.Create();  
22.   
23.      return ecdsa.VerifyHash(sha1.ComputeHash(Convert.FromBase64String(originalData)), Convert.FromBase64String(data));  
24.  }  

/* 作者：GhostBear 博客地址：Http://blog.youkuaiyun.com/ghostbear */ static string EnECDsa(string data, CngKey key) { ECDsaCng ecdsa = new ECDsaCng(key); SHA1 sha1 = SHA1.Create(); byte[] result; result = ecdsa.SignHash(sha1.ComputeHash(Convert.FromBase64String(data))); return Convert.ToBase64String(result); } static bool DeECDsa(string data, CngKey key,string originalData) { ECDsaCng ecdsa = new ECDsaCng(key); SHA1 sha1 = SHA1.Create(); return ecdsa.VerifyHash(sha1.ComputeHash(Convert.FromBase64String(originalData)), Convert.FromBase64String(data)); }

调用代码

[csharp] view plain copy print ?

1.   Console.WriteLine("ECDsa数字签名");  
2. string inputDSA_1 = inputString();  
3. string inputDSA_2 = inputDSA_1;  
4. CngKey key = CngKey.Create(CngAlgorithm.ECDsaP256);  
5.   
6. string enData = EnECDsa(inputDSA_1, key);  
7.   
8. Console.WriteLine("加密后的数据：{0}", enData);  
9. Console.WriteLine("解密后的数据:{0}", DeECDsa(enData, key, inputDSA_2));