java RSA

[ncs_wl]

请问java产生rsa密钥对，使用的是csp？还是pkcs？为什么和微软的公私钥长度不一样呢？

[fhuibo212]

帮定一个

[bobo364]

package   com.XXX.common.security;   
    
  /**   
    *   <p>Title:   </p>   
    *   <p>Description:   </p>   
    *   <p>Copyright:   Copyright   (c)   2003</p>   
    *   <p>Company:   secrurity</p>   
    *   @author   Jim   Miao   
    *   @version   1.0   
    */   
    
  import   java.security.*;   
  import   java.security.interfaces.*;   
  import   javax.crypto.*;   
  import   java.io.*;   
    
  import   javax.crypto.Cipher;   
  import   javax.crypto.BadPaddingException;   
  import   javax.crypto.IllegalBlockSizeException;   
  import   javax.crypto.KeyGenerator;   
  import   java.security.Key;   
  import   java.security.InvalidKeyException;   
    
    
  public   class   RSAEnAndDecrypt   {   
          public   RSAEnAndDecrypt()   {   
          }   
          private   static   String   algorithm   =   "RSA";   
          private   static   Key   key   =   null;   
          private   static   Cipher   cipher   =   null;   
    
          private   static   void   setUp()   throws   Exception   {   
                  key   =   KeyGenerator.getInstance(algorithm).generateKey();   
                  cipher   =   Cipher.getInstance(algorithm);   
          }   
          private   static   byte[]   encrypt(String   input)   
                  throws   InvalidKeyException,   
                                BadPaddingException,   
                                IllegalBlockSizeException   {   
                  cipher.init(Cipher.ENCRYPT_MODE,   key);   
                  byte[]   inputBytes   =   input.getBytes();   
                  return   cipher.doFinal(inputBytes);   
          }   
    
          private   static   String   decrypt(byte[]   encryptionBytes)   
                  throws   InvalidKeyException,   
                                BadPaddingException,   
                                IllegalBlockSizeException   {   
                  cipher.init(Cipher.DECRYPT_MODE,   key);   
                  byte[]   recoveredBytes   =   
                      cipher.doFinal(encryptionBytes);   
                  String   recovered   =   
                      new   String(recoveredBytes);   
                  return   recovered;   
              }   
  }   

我只有实现的代码，要看具体的细节，只能读代码了