package?com.lyt.certificate;

import?java.io.FileInputStream;
import?java.security.KeyStore;
import?java.security.PrivateKey;
import?java.security.PublicKey;
import?java.security.Signature;
import?java.security.cert.Certificate;
import?java.security.cert.CertificateFactory;
import?java.security.cert.X509Certificate;
import?java.util.Date;

import?javax.crypto.Cipher;

import?com.lyt.coder.Coder;
/**
?*?Java證書體系的實現
?*?@author?Leiyt
?*
?*/
public?abstract?class?CertificateCoder?extends?Coder?{
	?/**?
?????*?Java密鑰庫（Java?Key?Store，JKS）KEY_STORE?
?????*/??
????public?static?final?String?KEY_STORE?=?“JKS“;??
??
????public?static?final?String?X509?=?“X.509“;??
??
????/**?
?????*?由KeyStore獲得私鑰?
?????*??
?????*?@param?keyStorePath?
?????*?@param?alias?
?????*?@param?password?
?????*?@return?
?????*?@throws?Exception?
?????*/??
????private?static?PrivateKey?getPrivateKey（String?keyStorePath?String?alias??
????????????String?password）?throws?Exception?{??
????????KeyStore?ks?=?getKeyStore（keyStorePath?password）;??
????????PrivateKey?key?=?（PrivateKey）?ks.getKey（alias?password.toCharArray（））;??
????????return?key;??
????}??
??
????/**?
?????*?由Certificate獲得公鑰?
?????*??
?????*?@param?certificatePath?
?????*?@return?
?????*?@throws?Exception?
?????*/??
????private?static?PublicKey?getPublicKey（String?certificatePath）??
????????????throws?Exception?{??
????????Certificate?certificate?=?getCertificate（certificatePath）;??
????????PublicKey?key?=?certificate.getPublicKey（）;??
????????return?key;??
????}??
??
????/**?
?????*?獲得Certificate?
?????*??
?????*?@param?certificatePath?
?????*?@return?
?????*?@throws?Exception?
?????*/??
????private?static?Certificate?getCertificate（String?certificatePath）??
????????????throws?Exception?{??
????????CertificateFactory?certificateFactory?=?CertificateFactory??
????????????????.getInstance（X509）;??
????????FileInputStream?in?=?new?FileInputStream（certificatePath）;??
??
????????Certificate?certificate?=?certificateFactory.generateCertificate（in）;??
????????in.close（）;??
??
????????return?certificate;??
????}??
??
????/**?
?????*?獲得Certificate?
?????*??
?????*?@param?keyStorePath?
?????*?@param?alias?
?????*?@param?password?
?????*?@return?
?????*?@throws?Exception?
?????*/??
????private?static?Certificate?getCertificate（String?keyStorePath??
????????????String?alias?String?password）?throws?Exception?{??
????????KeyStore?ks?=?getKeyStore（keyStorePath?password）;??
????????Certificate?certificate?=?ks.getCertificate（alias）;??
??
????????return?certificate;??
????}??
??
????/**?
?????*?獲得KeyStore?
?????*??
?????*?@param?keyStorePath?
?????*?@param?password?
?????*?@return?
?????*?@throws?Exception?
?????*/??
????private?static?KeyStore?getKeyStore（String?keyStorePath?String?password）??
????????????throws?Exception?{??
????????FileInputStream?is?=?new?FileInputStream（keyStorePath）;??
????????KeyStore?ks?=?KeyStore.getIn

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2014-01-22?10:00??Code\
?????文件?????????491??2014-01-22?10:00??Code\.classpath
?????文件?????????380??2014-01-22?10:00??Code\.project
?????目錄???????????0??2014-01-22?10:00??Code\.settings\
?????文件?????????598??2014-01-22?10:00??Code\.settings\org.eclipse.jdt.core.prefs
?????目錄???????????0??2014-01-22?10:00??Code\bin\
?????目錄???????????0??2014-01-22?10:00??Code\bin\com\
?????目錄???????????0??2014-01-22?10:00??Code\bin\com\lyt\
?????目錄???????????0??2014-01-22?10:00??Code\bin\com\lyt\certificate\
?????文件????????5879??2014-01-22?10:00??Code\bin\com\lyt\certificate\CertificateCoder.class
?????文件????????2842??2014-01-22?10:00??Code\bin\com\lyt\certificate\CertificateCoderTest.class
?????目錄???????????0??2014-01-22?10:00??Code\bin\com\lyt\coder\
?????文件????????2106??2014-01-22?10:00??Code\bin\com\lyt\coder\Coder.class
?????文件????????1991??2014-01-22?10:00??Code\bin\com\lyt\coder\CoderTest.class
?????目錄???????????0??2014-01-22?10:00??Code\bin\com\lyt\des\
?????文件????????2537??2014-01-22?10:00??Code\bin\com\lyt\des\DESCoder.class
?????文件????????1437??2014-01-22?10:00??Code\bin\com\lyt\des\DESCoderTest.class
?????目錄???????????0??2014-01-22?10:00??Code\bin\com\lyt\dh\
?????文件????????5058??2014-01-22?10:00??Code\bin\com\lyt\dh\DHCoder.class
?????文件????????2244??2014-01-22?10:00??Code\bin\com\lyt\dh\DHCoderTest.class
?????目錄???????????0??2014-01-22?10:00??Code\bin\com\lyt\dsa\
?????文件????????4343??2014-01-22?10:00??Code\bin\com\lyt\dsa\DSACoder.class
?????文件????????1688??2014-01-22?10:00??Code\bin\com\lyt\dsa\DSACoderTest.class
?????目錄???????????0??2014-01-22?10:00??Code\bin\com\lyt\ecc\
?????文件????????5125??2014-01-22?10:00??Code\bin\com\lyt\ecc\ECCCoder.class
?????文件????????1703??2014-01-22?10:00??Code\bin\com\lyt\ecc\ECCCoderTest.class
?????目錄???????????0??2014-01-22?10:00??Code\bin\com\lyt\md5\
?????文件????????1344??2014-01-22?10:00??Code\bin\com\lyt\md5\MD5.class
?????文件?????????753??2014-01-22?10:00??Code\bin\com\lyt\md5\MD5Test.class
?????目錄???????????0??2014-01-22?10:00??Code\bin\com\lyt\pbe\
?????文件????????2024??2014-01-22?10:00??Code\bin\com\lyt\pbe\PBECoder.class
............此處省略56個文件信息