.net平台的RSA实现以及与Delphi之间的互操作性

2022-07-11 20:14:40

.net平台下面的RSA算法实现是RSACryptoServiceProvider，如果安装了 Microsoft Enhanced Cryptographic Provider，则 RSACryptoServiceProvider 支持长度从 384 位至 16384 位（增量为 8 位）的密钥。如果安装了 Microsoft Base Cryptographic Provider，则支持长度从 384 位至 512 位（增量为 8 位）的密钥。
目前该算法支持的填充Padding算法为PKCS#1 1.5和OAEPPadding，而签名算法目前仅支持SHA1withRSA算法，其他的好像没有提供，或许需要安装其他provider,目前第三方的provider可以使用Bouncy Castle的C#实现http://www.bouncycastle.org/csharp/，使用Bouncy Castle的包可以实现
RIPEMD128、RIPEMD160、RIPEMD256、SHA-1、SHA-224、SHA-256、SHA-384、SHA-512、MD2，MD4，MD5等HASH算法与RSA的集成签名算法。
为了更好的处理BigInteger运算的问题，在本文中用到了http://www.codeproject.com/csharp/biginteger.asp提供的BigInteger.cs用来处理大数运算的问题，用来验证的DLL实用delphi实现的，当然也可以用java来验证，效果相同，该DLL的代码在下面专题中作详细讲解。
具体源代码如下：

using System.Text.RegularExpressions;
2

using System.Text;
3

using System.IO;
4

using System.Net;
5

using System.Xml;
6

using System.Runtime.InteropServices;
7

using System;
8

using System.Security;
9

using System.Security.Cryptography;
10

/*
11

RSA Keyinfo:
12

---------------------------------------------------------------------
13

可以采用java或者.net生成下面参数信息
14

加密位：1024bits
15

>>>PrivateKey:
16

modulus:123410773237385713572440712840019405878257600213906351775134402766524785605776353635515879438375969303333340691224323217379791619946464100287854264933660919378485000299257054039555887477610831829409144592603086784397675690934246422666689022312589317493002336070775714030955737435316659994026756956753416169929
17

public exponent:65537
18

private exponent:102299672961750099570264341757280532275542401837445663770632643616494888426681205847125069294737520917541038900032845310395266178574112466427178094767628391398378924953787043659322148498169017989730953803803890989295625028193153480552247210183981959942844345362118479513739632952091865360095551345350474614233
19

prime p:12794390226544301614076650435602993036558056678553112540698297249963365434628505393116653422818365344228379828231764392521731584684435248093787027949139091
20

prime q:9645694015283940797244851561543569992525098416055322825220116046655435860727361740896753161534492415500799272063647633894112205918420307541634544631799219
21

prime exponent p:1529969882744521289493243655703200580244831014386083326692594344385048063096931454992679141166478923397741927672190328275520857365639547725880173612423563
22

prime exponent q:769453717928871362558494956494038236735297839680443531596667023084892788499361386413907037681040120057954721673997128797449053397950796768659923391901465
23

crt coefficient:12583540851660819630796910273258143748946857763306703439274571717196507402536398234616014735603915981141807543055250658251670340810611251684169356826070785
24

>>>PublicKey:
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public exponent:65537
27

*/
28

public class RSATest
30

{
31

[DllImport("cmipcrypt.dll")]
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public static extern String Cmip_Encrypt(String text,String exp,String module);
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[DllImport("cmipcrypt.dll")]
35

public static extern String Cmip_Decrypt(String etext,String d,String module);
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[DllImport("cmipcrypt.dll")]
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public static extern String Cmip_SignData(String text,String d,String module,String alg);
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[DllImport("cmipcrypt.dll")]
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public static extern String Cmip_VerifyData(String text,String signtext,String r,String module);
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[DllImport("cmipcrypt.dll")]
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public static extern String Cmip_ComputeHash(String text,String alg);
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private String p,q,e,n,d,dp,dq,crt;
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private RSAParameters param;
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public void init(){
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p="12794390226544301614076650435602993036558056678553112540698297249963365434628505393116653422818365344228379828231764392521731584684435248093787027949139091";
51

q="9645694015283940797244851561543569992525098416055322825220116046655435860727361740896753161534492415500799272063647633894112205918420307541634544631799219";
52

e="65537";
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n="123410773237385713572440712840019405878257600213906351775134402766524785605776353635515879438375969303333340691224323217379791619946464100287854264933660919378485000299257054039555887477610831829409144592603086784397675690934246422666689022312589317493002336070775714030955737435316659994026756956753416169929";
54

d="102299672961750099570264341757280532275542401837445663770632643616494888426681205847125069294737520917541038900032845310395266178574112466427178094767628391398378924953787043659322148498169017989730953803803890989295625028193153480552247210183981959942844345362118479513739632952091865360095551345350474614233";
55

dp="1529969882744521289493243655703200580244831014386083326692594344385048063096931454992679141166478923397741927672190328275520857365639547725880173612423563";
56

dq="769453717928871362558494956494038236735297839680443531596667023084892788499361386413907037681040120057954721673997128797449053397950796768659923391901465";
57

crt="12583540851660819630796910273258143748946857763306703439274571717196507402536398234616014735603915981141807543055250658251670340810611251684169356826070785";
58

param=new RSAParameters();
60

byte[] bdata=GetBytes(e);
61

param.Exponent=bdata;
62

param.P=GetBytes(p);
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param.Q=GetBytes(q);
64

param.Modulus=GetBytes(n);
65

param.D=GetBytes(d);
66

param.DP=GetBytes(dp);
67

param.DQ=GetBytes(dq);
68

param.InverseQ=GetBytes(crt);
69

}
70

public static void Main(String[] args)
72

{
73

if(args.Length<2){
74

Console.WriteLine("\nRSATest.exe [text明文] [hash算法]。");
75

return;
76

}
77

RSATest rsa=new RSATest();
78

rsa.init();
79

rsa.DelphiDllTest(args[0],args[1]);
80

rsa.DotnetRSATest(args[0],args[1]);
81

rsa.InteropTest(args[0],args[1]);
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}
86

public void DelphiDllTest(String text,String alg){
88

String res=Cmip_Encrypt(text,e,n);
89

Console.WriteLine("=====================Dll调用RSA测试=====================");
90

Console.WriteLine("\n1.明文："+text);
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//加密
92

Console.WriteLine("\n2.RSA加密："+res);
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res=Cmip_Decrypt(res,d,n);
94

Console.WriteLine("\n3.RSA解密："+res);
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//签名
96

String signdata=Cmip_SignData(text,d,n,alg);
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Console.WriteLine("\n4.对明文采用"+alg.Trim()+"withRSA的签名算法，签名数据为：\n"+signdata);
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Console.WriteLine("\n5.RSA验证签名:"+Cmip_VerifyData(text,signdata,e,n));
99

100

Console.WriteLine("\n6.采用HASH算法"+alg+"计算明文的结果:"+Cmip_ComputeHash(text,alg));
101

}
102

//.net只实现了SHA1的rsa签名算法
103

public void DotnetRSATest(String text,String alg){
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Console.WriteLine("\n\n\n=========.net RSACryptoServiceProvider调用RSA测试=========");
105

106

RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
107

rsa.ImportParameters(param);
108

RSAParameters param1=rsa.ExportParameters(true);
109

110

Console.WriteLine("1.明文:"+text);
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byte[] data=Encoding.Default.GetBytes(text);
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byte[] endata=rsa.Encrypt(data,false);
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Console.WriteLine("\n2.publicKey加密后的数据:"+Convert.ToBase64String(endata));
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byte[] dedata=rsa.Decrypt(endata,false);
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Console.WriteLine("\n3.privateKey解密后的数据:"+Encoding.Default.GetString(dedata));
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//签名
117

HashAlgorithm hashalg=null;
118

switch(alg.ToUpper()){
119

case "MD5":
120

hashalg=new MD5CryptoServiceProvider();
121

break;
122

case "SHA1":
123

hashalg=new SHA1CryptoServiceProvider (); ;
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break;
125

case "SHA256":
126

hashalg=new SHA256Managed();
127

break;
128

case "SHA384":
129

hashalg=new SHA384Managed();
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break;
131

case "SHA512":
132

hashalg=new SHA512Managed();
133

break;
134

default:
135

throw new Exception("不支持的HASH算法："+alg);
136

}
137

try{
138

byte[] signdata=rsa.SignData(data,hashalg);
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Console.WriteLine("\n4.对明文采用"+alg.Trim()+"withRSA的签名算法，签名数据为：\n"+Convert.ToBase64String(signdata));
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Console.WriteLine("\n5.RSA验证签名:"+rsa.VerifyData(data,hashalg,signdata));
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}catch(CryptographicException ex){
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Console.WriteLine("\n===================================");
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Console.WriteLine("!!!指定的HASH算法在.net中可能未实现！："+ex.Message+"\n.net可用算法"+rsa.SignatureAlgorithm);
144

Console.WriteLine("===================================");
145

}
146

byte[] hash=hashalg.ComputeHash(data);
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Console.WriteLine("\n6.采用HASH算法"+alg+"计算明文的结果:"+ConvByteArrayToHex(hash));
148

149

150

String res=Cmip_Decrypt(Convert.ToBase64String(endata),d,n);
151

Console.WriteLine("\n"+res);
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Console.WriteLine(Encoding.Default.ToString());
153

154

}
155

//dll加密，.net解密
156

//dll签名，.net验证
157

public void InteropTest(String text,String alg){
158

String res=Cmip_Encrypt(text,e,n);
159

Console.WriteLine("\n=====================跨语言平台调用RSA测试=====================");
160

Console.WriteLine("\n1.明文："+text);
161

//加密
162

Console.WriteLine("\n2.DLL RSA加密："+res);
163

RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
164

rsa.ImportParameters(param);
165

byte[] txdata=rsa.Decrypt(Convert.FromBase64String(res),false);
166

167

Console.WriteLine("\n3.RSACryptoServiceProvider RSA解密："+Encoding.Default.GetString(txdata));
168

//dll签名，.net验证
169

String signdata=Cmip_SignData(text,d,n,alg);
170

Console.WriteLine("\n4.DLL 对明文采用"+alg.Trim()+"withRSA的签名算法，签名数据为：\n"+signdata);
171

//签名
172

HashAlgorithm hashalg=null;
173

switch(alg.ToUpper()){
174

case "MD5":
175

hashalg=new MD5CryptoServiceProvider();
176

break;
177

case "SHA1":
178

hashalg=new SHA1CryptoServiceProvider (); ;
179

break;
180

case "SHA256":
181

hashalg=new SHA256Managed();
182

break;
183

case "SHA384":
184

hashalg=new SHA384Managed();
185

break;
186

case "SHA512":
187

hashalg=new SHA512Managed();
188

break;
189

default:
190

throw new Exception("不支持的HASH算法："+alg);
191

}
192

try{
193

Console.WriteLine("\n5.RSACryptoServiceProvider RSA验证签名:"+rsa.VerifyData(Encoding.Default.GetBytes(text),hashalg,Convert.FromBase64String(signdata)));
194

}catch(CryptographicException ex){
195

Console.WriteLine("\n===================================");
196

Console.WriteLine("!!!指定的HASH算法在.net中可能未实现！："+ex.Message+"\n.net可用算法"+rsa.SignatureAlgorithm);
197

Console.WriteLine("===================================");
198

}
199

}
200

201

public static byte[] GetBytes(String num){
202

BigInteger n=new BigInteger(num,10);
203

String s=n.ToString(2);
204

if(s.Length%8>0){
205

s=new String('0',8-s.Length%8)+s;
206

}
207

byte[] data=new byte[s.Length/8];
208

String ocetstr;
209

for(int i=0;i<data.Length;i++){
210

ocetstr=s.Substring(8*i,8);
211

data[i]=Convert.ToByte(ocetstr , 2 ) ;
212

}
213

return data;
214

}
215

216

public String ConvByteArrayToHex(byte[] data){
217

String s="";
218

for(int i=0;i<data.Length;i++){
219

s+=Convert.ToString(data[i],16);
220

}
221

return s.ToUpper();
222

}
223

224

225

}

运行结果如下：

d:\>rsatest hello加密 sha1
=====================Dll调用RSA测试=====================

1.明文：hello加密

2.RSA加密：A/0ZWckK9C6JyTk8NmwESVSI/N8OyQ7nYBEK8cpzo30nHj+Pb0WfvQ+lFa38Xk3cd+d8ueysTSc7tqr4Wjk831d0MexAC2yJ4SkqLWfKnhuU0OxF6d4s8UpegvuMBy1KWpzovbFGa3HUGRmMVbu4GqPDdzkvFmfWzGArXXiDpVw=

3.RSA解密：hello加密

4.对明文采用sha1withRSA的签名算法，签名数据为：
iz5J3e3H9NhHhs0qV7GlAODemWR8k7lhubqQJ+rdWl00ekOXu1EgULmeqalfip/3G98+X2eQyJ37bTjSpZ2oW4sIDYDJ3tHaaqooLtS6Iz8GWND+52YDZFLX8t+Yure5+tn2e1C9R181RnZfKt9dKQ2vpw0H6KqXNRwbmQJLynY=

5.RSA验证签名:true

6.采用HASH算法sha1计算明文的结果:C3F118FF24E166AC977EC9C3D69A5AF8B7C78F8B

=========.net RSACryptoServiceProvider调用RSA测试=========

1.明文:hello加密

2.publicKey加密后的数据:NrW/Uwjd72SduBgQkOFjjtEibTX/+WOCV0/oIFMiEln5uhLZ5OaH6cyWPEXBEwjZIiUY78dmdk8BW6SmiDArNwFePf/tM7KCAcSU9Zz3PGl07ZDmvT1P8F24caKaX9+fGwy72mOtoBhFnKh18oOjq4wZ06e1g8IQQQco9W+kHgU=

3.privateKey解密后的数据:hello加密

5.RSA验证签名:True

6.采用HASH算法sha1计算明文的结果:C3F118FF24E166AC977EC9C3D69A5AF8B7C78F8B

hello加密

System.Text.DBCSCodePageEncoding

=====================跨语言平台调用RSA测试=====================

1.明文：hello加密

2.DLL RSA加密：P/AP7Iwv7pYxh+T1a/PZ4UBCZABu7zPpNt65W5ncNfo8eVQbH8jlH/Jv+fGa0x4CCmRUaTA0O1HeO4LowRpFyPJkwLxQAsMedvfRcQ7Ro2Hggoz5uwRG6QZ2go0Io0KAOGhcV4efKHFG2xro4jYX2O2hWyHTeMldDQPxt98z2co=

3.RSACryptoServiceProvider RSA解密：hello加密

4.DLL 对明文采用sha1withRSA的签名算法，签名数据为：
iz5J3e3H9NhHhs0qV7GlAODemWR8k7lhubqQJ+rdWl00ekOXu1EgULmeqalfip/3G98+X2eQyJ37bTjSpZ2oW4sIDYDJ3tHaaqooLtS6Iz8GWND+52YDZFLX8t+Yure5+tn2e1C9R181RnZfKt9dKQ2vpw0H6KqXNRwbmQJLynY=

5.RSACryptoServiceProvider RSA验证签名:True

有关程序下载：
http://files.cnblogs.com/midea0978/rsa.net.rar

附注：对于这个RSA的跨平台技术，已经是07年研究的结果，后来就没怎么深入了，目前本人已经在一个项目中使用这方面该技术，应用在delphi,powerbuilder,J2EE复合环境中。对于这方面的详细源代码或者技术支持感兴趣的话，如能提供一定报酬的基础上，可使用站内消息联系博主转让！

当然如果免费使用的话，附件中的cmipcrypt.dll是没有任何限制，随便使用。

码农公寓

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