今天調查了C# RSA和Java RSA，網上很多人說，C#加密或者java加密 ，Java不能解密或者C#不能解密

但是我嘗試了一下，發現是可以的，下面就是我嘗試的代碼，如果您有什么問題，我想看看，他們為什么不能互通？

1. packagersa;
3. importjava.math.BigInteger;
4. importjava.security.KeyFactory;
5. importjava.security.PRivateKey;
6. importjava.security.PublicKey;
7. importjava.security.spec.RSAPrivateKeySpec;
8. importjava.security.spec.RSAPublicKeySpec;
10. importjavax.crypto.Cipher;
12. importcom.sun.org.apache.xml.internal.security.exceptions.Base64DecodingException;
13. importcom.sun.org.apache.xml.internal.security.utils.Base64;
16. /**
17. *@authorcnchenhl
18. *Jul8,2011
19. */
20. publicclassRSAMain{
22. privatestaticStringmodule="5m9m14XH3oqLJ8bNGw9e4rGpXpcktv9MSkHSVFVMjHbfv+SJ5v0ubQQxa5YjLN4vc49z7SVju8s0X4gZ6AzZTn06jzWOgyPRV54Q4I0DCYadWW4Ze3e+BOtwgVU1Og3qHKn8vygoj40J6U85Z/PTJu3hN1m75Zr195ju7g9v4Hk=";
23. privatestaticStringexponentString="AQAB";
24. privatestaticStringdelement="vmaYHEbPAgOJvaEXQl+t8DQKFT1fudEysTy31LTyXjGu6XiltXXHUuZaa2IPyHgBz0Nd7znwsW/S44iql0Fen1kzKioEL3svANui63O3o5xdDeExVM6zOf1wUUh/oldovPweChyoAdMtUzgvCbJk1sYDJf++Nr0FeNW1RB1XG30=";
25. privatestaticStringencryptString="Vx/dGjS1YWKRubsoDgiShiwLgqyNE2z/eM65U7HZx+RogwaiZimNBxjuOS6acEhKZx66cMYEAd1fc6oewbEvDIfP44GaN9dCjKE/BkkQlwEg6aTO5q+yqy+nEGe1kvLY9EyXS/Kv1LDh3e/2xAk5FNj8Zp6oU2kq4ewL8kK/ai4=";
26. /**
27. *@paramargs
28. */
29. publicstaticvoidmain(String[]args){
30. byte[]en=encrypt();
31. System.out.println(Base64.encode(en));
32. byte[]enTest=null;
33. try{
34. enTest=Base64.decode(encryptString);
35. }catch(Base64DecodingExceptione){
36. e.printStackTrace();
37. }
38. System.out.println(enTest.length);
39. System.out.println(en.length);
40. System.out.println(newString(Dencrypt(en)));
41. System.out.println(newString(Dencrypt(enTest)));
42. }
44. publicstaticbyte[]encrypt(){
45. try{
46. byte[]modulusBytes=Base64.decode(module);
47. byte[]exponentBytes=Base64.decode(exponentString);
48. BigIntegermodulus=newBigInteger(1,modulusBytes);
49. BigIntegerexponent=newBigInteger(1,exponentBytes);
51. RSAPublicKeySpecrsaPubKey=newRSAPublicKeySpec(modulus,exponent);
52. KeyFactoryfact=KeyFactory.getInstance("RSA");
53. PublicKeypubKey=fact.generatePublic(rsaPubKey);
55. Ciphercipher=Cipher.getInstance("RSA");
56. cipher.init(Cipher.ENCRYPT_MODE,pubKey);
58. byte[]cipherData=cipher.doFinal(newString("chenhailong").getBytes());
59. returncipherData;
60. }catch(Exceptione){
61. e.printStackTrace();
62. }
63. returnnull;
65. }
67. publicstaticbyte[]Dencrypt(byte[]encrypted){
68. try{
69. byte[]expBytes=Base64.decode(delement);
70. byte[]modBytes=Base64.decode(module);
72. BigIntegermodules=newBigInteger(1,modBytes);
73. BigIntegerexponent=newBigInteger(1,expBytes);
75. KeyFactoryfactory=KeyFactory.getInstance("RSA");
76. Ciphercipher=Cipher.getInstance("RSA");
78. RSAPrivateKeySpecprivSpec=newRSAPrivateKeySpec(modules,exponent);
79. PrivateKeyprivKey=factory.generatePrivate(privSpec);
80. cipher.init(Cipher.DECRYPT_MODE,privKey);
81. byte[]decrypted=cipher.doFinal(encrypted);
82. returndecrypted;
83. }catch(Exceptione){
84. e.printStackTrace();
85. }
86. returnnull;
87. }
88. }

1. usingSystem;
2. usingSystem.Collections.Generic;
3. usingSystem.Linq;
4. usingSystem.Text;
5. usingSystem.Security.Cryptography;
7. namespaceRSA
8. {
9. classProgram
10. {
11. staticvoidMain(string[]args)
12. {
13. stringde="iBILuPJFgPMxgpbgN3F2JjD6XjcqRSApjVVbvBBEBDV21Pjj7lTrfhEjSVnJX/MVoZrmX0lxsvoXTMvvVwVF7K7W5hs7Qo+aMN96yWke7wiLEM9M4pPz60A/KSckskiona67tXcqOLXb8N18TKaNCKHv0Ce+GyEKK5+MT7e1vao=";
14. //stringencrypt=RSAEncrypt("","chenhailong");
15. byte[]encrypt=RSAEncrypt("chenhailong");
16. //stringname=RSADecrypt(encrypt);
17. stringname=RSADecrypt(Convert.FromBase64String(de));
18. Console.WriteLine(encrypt.Length);
19. Console.WriteLine(Convert.ToBase64String(encrypt));
20. Console.WriteLine(name);
21. Console.ReadKey();
22. }
23. ///<summary>
24. ///RSAencrypt
25. ///</summary>
26. ///<paramname="publickey"></param>
27. ///<paramname="content"></param>
28. ///<returns></returns>
29. publicstaticbyte[]RSAEncrypt(stringcontent)
30. {
31. stringpublickey=@"<RSAKeyValue><Modulus>5m9m14XH3oqLJ8bNGw9e4rGpXpcktv9MSkHSVFVMjHbfv+SJ5v0ubqQxa5YjLN4vc49z7SVju8s0X4gZ6AzZTn06jzWOgyPRV54Q4I0DCYadWW4Ze3e+BOtwgVU1Og3qHKn8vygoj40J6U85Z/PTJu3hN1m75Zr195ju7g9v4Hk=</Modulus><Exponent>AQAB</Exponent></RSAKeyValue>";
32. RSACryptoServiceProviderrsa=newRSACryptoServiceProvider();
33. byte[]cipherbytes;
34. rsa.FromXmlString(publickey);
35. cipherbytes=rsa.Encrypt(Encoding.UTF8.GetBytes(content),false);
37. //returnConvert.ToBase64String(cipherbytes);
38. returncipherbytes;
39. }
41. ///<summary>
42. ///RSAdecrypt
43. ///</summary>
44. ///<paramname="privatekey"></param>
45. ///<paramname="content"></param>
46. ///<returns></returns>
47. publicstaticstringRSADecrypt(byte[]content)
48. {
49. stringprivatekey=@"<RSAKeyValue><Modulus>5m9m14XH3oqLJ8bNGw9e4rGpXpcktv9MSkHSVFVMjHbfv+SJ5v0ubqQxa5YjLN4vc49z7SVju8s0X4gZ6AzZTn06jzWOgyPRV54Q4I0DCYadWW4Ze3e+BOtwgVU1Og3qHKn8vygoj40J6U85Z/PTJu3hN1m75Zr195ju7g9v4Hk=</Modulus><Exponent>AQAB</Exponent><P>/hf2dnK7rNfl3lbqghWcpFdu778hUpIEBixCDL5WiBtpkZdpSw90aERmHJYaW2RGvGRi6zSftLh00KHsPcNUMw==</P><Q>6Cn/jOLrPapDTEp1Fkq+uz++1Do0eeX7HYqi9rY29CqShzCeI7LEYOoSwYuAJ3xA/DuCdQENPSoJ9KFbO4Wsow==</Q><DP>ga1rHIJro8e/yhxjrKYo/nqc5ICQGhrpMNlPkD9n3CjZVPOISkWF7FzUHEzDANeJfkZhcZa21z24aG3rKo5Qnw==</DP><DQ>MNGsCB8rYlMsRZ2ek2pyQwO7h/sZT8y5ilO9wu08Dwnot/7UMiOEQfDWstY3w5XQQHnvC9WFyCfP4h4QBissyw==</DQ><InverseQ>EG02S7SADhH1EVT9DD0Z62Y0uY7gIYvxX/uq+IzKSCwB8M2G7Qv9xgZQaQlLpCaeKbux3Y59hHM+KpamGL19Kg==</InverseQ><D>vmaYHEbPAgOJvaEXQl+t8DQKFT1fudEysTy31LTyXjGu6XiltXXHUuZaa2IPyHgBz0Nd7znwsW/S44iql0Fen1kzKioEL3svANui63O3o5xdDeExVM6zOf1wUUh/oldovPweChyoAdMtUzgvCbJk1sYDJf++Nr0FeNW1RB1XG30=</D></RSAKeyValue>";
50. RSACryptoServiceProviderrsa=newRSACryptoServiceProvider();
51. byte[]cipherbytes;
52. rsa.FromXmlString(privatekey);
53. cipherbytes=rsa.Decrypt(content,false);
55. returnEncoding.UTF8.GetString(cipherbytes);
56. }
59. }
61. }

有什么問題 請給我留言

下面是Key的互通代碼

1. privatebyte[]removeMSZero(byte[]data){
2. byte[]data1;
3. intlen=data.length;
4. if(data[0]==0){
5. data1=newbyte[data.length-1];
6. System.arraycopy(data,1,data1,0,len-1);
7. }else
8. data1=data;
10. returndata1;
11. }