/**
?*?作者：軍師
?*?郵箱：68079320@qq.com
?*?個(gè)人博客：http://www.webiji.com
?*/
?package?crypt;

import?java.io.File;
import?java.io.FileReader;
import?java.io.IOException;
import?java.security.KeyFactory;
import?java.security.Signature;
import?java.security.interfaces.RSAPrivateKey;
import?java.security.interfaces.RSAPublicKey;
import?java.security.spec.PKCS8EncodedKeySpec;
import?java.security.spec.X509EncodedKeySpec;

import?javax.crypto.Cipher;

public?class?Rsa?{
	
	private?String?priKey;
	private?String?pubKey;
	
	public?static?void?main（String[]?args）?{
		Rsa?rsa?=?new?Rsa（）;
		String?str?=?“我要加密這段文字。“;
		System.out.println（“原文:“+“我要加密這段文字。“）;
		String?crypt?=?rsa.encryptByPrivateKey（str）;
		System.out.println（“私鑰加密密文:“+crypt）;
		String?result?=?rsa.decryptByPublicKey（crypt）;
		System.out.println（“原文:“+result）;
		
		System.out.println（“---“）;
		
		str?=?“我要加密這段文字。“;
		System.out.println（“原文:“+“我要加密這段文字。“）;
		crypt?=?rsa.encryptByPublicKey（str）;
		System.out.println（“公鑰加密密文:“+crypt）;
		result?=?rsa.decryptByPrivateKey（crypt）;
		System.out.println（“原文:“+result）;
		
		System.out.println（“---“）;
		
		str?=?“我要簽名這段文字。“;
		System.out.println（“原文：“+str）;
		String?str1?=?rsa.signByPrivateKey（str）;
		System.out.println（“簽名結(jié)果：“+str1）;
		if（rsa.verifyByPublicKey（str1?str））{
			System.out.println（“成功“）;
		}?else?{
			System.out.println（“失敗“）;
		}
	}

	public?Rsa（）{
		priKey?=?readStringFromFile（“java_private.pem“）;
		pubKey?=?readStringFromFile（“java_public.pem“）;
	}
	
	??/**
	???*?使用私鑰加密
	???*?@see?decByPriKey
	???*/
	??public?String?encryptByPrivateKey（String?data）?{
	????//?加密
	????String?str?=?““;
	????try?{
			byte[]?pribyte?=?base64decode（priKey.trim（））;
			PKCS8EncodedKeySpec?keySpec?=?new?PKCS8EncodedKeySpec（pribyte）;
			KeyFactory?fac?=?KeyFactory.getInstance（“RSA“）;
			RSAPrivateKey?privateKey?=?（RSAPrivateKey）?fac.generatePrivate（keySpec）;
	????	Cipher?c1?=?Cipher.getInstance（“RSA/ECB/PKCS1Padding“）;
	????	c1.init（Cipher.ENCRYPT_MODE?privateKey）;
	????	str?=?base64encode（c1.doFinal（data.getBytes（）））;
		}?catch?（Exception?e）?{
			e.printStackTrace（）;
			
	????}
	????return?str;
	??}
	??
	??/**
	???*?使用私鑰解密
	???*?@see?decByPriKey
	???*/
	??public?String?decryptByPrivateKey（String?data）?{
	????//?加密
	????String?str?=?““;
	????try?{
			byte[]?pribyte?=?base64decode（priKey.trim（））;
			PKCS8EncodedKeySpec?keySpec?=?new?PKCS8EncodedKeySpec（pribyte）;
			KeyFactory?fac?=?KeyFactory.getInstance（“RSA“）;
			RSAPrivateKey?privateKey?=?（RSAPrivateKey）?fac.generatePrivate（keySpec）;
	????	Cipher?c1?=?Cipher.getInstance（“RSA/ECB/PKCS1Padding“）;
	????	c1.init（Cipher.DECRYPT_MODE?privateKey）;
	????	byte[]?temp?=?c1.doFinal（base64decode（data））;
	????	str?=?new?String（temp）;
		}?catch?（Exception?e）?{
			e.printStackTrace（）;
			
	????}
	????return?str;
	??}

	??
	??/**
	???*?使用公鑰加密
	???*?@see?decByPriKey
	???*/
	??public?String?encryptByPublicKey（String?data）?{

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件????????861??2016-04-20?18:31??PHP_JAVA_RSA加密\java_private.pem

?????文件????????219??2016-04-20?18:32??PHP_JAVA_RSA加密\java_public.pem

?????文件????????916??2016-02-17?15:07??PHP_JAVA_RSA加密\php_private.pem

?????文件????????272??2016-02-17?15:07??PHP_JAVA_RSA加密\php_public.pem

?????文件???????7145??2016-04-21?11:57??PHP_JAVA_RSA加密\Rsa.java

?????文件???????3444??2016-04-21?11:57??PHP_JAVA_RSA加密\RSA.php

?????文件????????542??2016-04-21?12:00??PHP_JAVA_RSA加密\說明.txt

?????目錄??????????0??2016-04-21?11:53??PHP_JAVA_RSA加密

-----------?---------??----------?-----??----

????????????????13399????????????????????8