?如基本的單向加密算法：??
BASE64 嚴格地說，屬于編碼格式，而非加密算法
MD5(Message Digest algorithm 5，信息摘要算法)
SHA(Secure Hash Algorithm，安全散列算法)
HMAC(Hash Message Authentication Code，散列消息鑒別碼)
DES(Data Encryption Standard，數(shù)據(jù)加密算法)
PBE(Password-based encryption，基于密碼驗證)
RSA(算法的名字以發(fā)明者的名字命名：Ron Rivest, AdiShamir 和Leonard Adleman)
DH(Diffie-Hellman算法，密鑰一致協(xié)議)
DSA(Digital Signature Algorithm，數(shù)字簽名)
ECC(Elliptic Curves Cryptography，橢圓曲線密碼編碼學(xué))
/***?BASE64解密*?*?@param?key*?@return*?@throws?Exception*/public?static?byte[]?decryptBASE64(String?key)?throws?Exception?{return?(new?BASE64Decoder()).decodeBuffer(key);}/***?BASE64加密*?*?@param?key*?@return*?@throws?Exception*/public?static?String?encryptBASE64(byte[]?key)?throws?Exception?{return?(new?BASE64Encoder()).encodeBuffer(key);}
/***?MD5加密*?*?@param?data*?@return*?@throws?Exception*/public?static?byte[]?encryptMD5(byte[]?data)?throws?Exception?{MessageDigest?md5?=?MessageDigest.getInstance(KEY_MD5);md5.update(data);return?md5.digest();}
/***?SHA加密*?*?@param?data*?@return*?@throws?Exception*/public?static?byte[]?encryptSHA(byte[]?data)?throws?Exception?{MessageDigest?sha?=?MessageDigest.getInstance(KEY_SHA);sha.update(data);return?sha.digest();}
}
/***?初始化HMAC密鑰*?*?@return*?@throws?Exception*/public?static?String?initMacKey()?throws?Exception?{KeyGenerator?keyGenerator?=?KeyGenerator.getInstance(KEY_MAC);SecretKey?secretKey?=?keyGenerator.generateKey();return?encryptBASE64(secretKey.getEncoded());}/***?HMAC加密*?*?@param?data*?@param?key*?@return*?@throws?Exception*/public?static?byte[]?encryptHMAC(byte[]?data,?String?key)?throws?Exception?{SecretKey?secretKey?=?new?SecretKeySpec(decryptBASE64(key),?KEY_MAC);Mac?mac?=?Mac.getInstance(secretKey.getAlgorithm());mac.init(secretKey);return?mac.doFinal(data);}
import?java.security.MessageDigest;import?javax.crypto.KeyGenerator;
import?javax.crypto.Mac;
import?javax.crypto.SecretKey;import?sun.misc.BASE64Decoder;
import?sun.misc.BASE64Encoder;/***?基礎(chǔ)加密組件*?*?@author?梁棟*?@version?1.0*?@since?1.0*/
public?abstract?class?Coder?{public?static?final?String?KEY_SHA?=?"SHA";public?static?final?String?KEY_MD5?=?"MD5";/***?MAC算法可選以下多種算法*?*?<pre>*?HmacMD5?*?HmacSHA1?*?HmacSHA256?*?HmacSHA384?*?HmacSHA512*?</pre>*/public?static?final?String?KEY_MAC?=?"HmacMD5";/***?BASE64解密*?*?@param?key*?@return*?@throws?Exception*/public?static?byte[]?decryptBASE64(String?key)?throws?Exception?{return?(new?BASE64Decoder()).decodeBuffer(key);}/***?BASE64加密*?*?@param?key*?@return*?@throws?Exception*/public?static?String?encryptBASE64(byte[]?key)?throws?Exception?{return?(new?BASE64Encoder()).encodeBuffer(key);}/***?MD5加密*?*?@param?data*?@return*?@throws?Exception*/public?static?byte[]?encryptMD5(byte[]?data)?throws?Exception?{MessageDigest?md5?=?MessageDigest.getInstance(KEY_MD5);md5.update(data);return?md5.digest();}/***?SHA加密*?*?@param?data*?@return*?@throws?Exception*/public?static?byte[]?encryptSHA(byte[]?data)?throws?Exception?{MessageDigest?sha?=?MessageDigest.getInstance(KEY_SHA);sha.update(data);return?sha.digest();}/***?初始化HMAC密鑰*?*?@return*?@throws?Exception*/public?static?String?initMacKey()?throws?Exception?{KeyGenerator?keyGenerator?=?KeyGenerator.getInstance(KEY_MAC);SecretKey?secretKey?=?keyGenerator.generateKey();return?encryptBASE64(secretKey.getEncoded());}/***?HMAC加密*?*?@param?data*?@param?key*?@return*?@throws?Exception*/public?static?byte[]?encryptHMAC(byte[]?data,?String?key)?throws?Exception?{SecretKey?secretKey?=?new?SecretKeySpec(decryptBASE64(key),?KEY_MAC);Mac?mac?=?Mac.getInstance(secretKey.getAlgorithm());mac.init(secretKey);return?mac.doFinal(data);}
}
import?static?org.junit.Assert.*;import?org.junit.Test;/***?*?@author?梁棟*?@version?1.0*?@since?1.0*/
public?class?CoderTest?{@Testpublic?void?test()?throws?Exception?{String?inputStr?=?"簡單加密";System.err.println("原文:\n"?+?inputStr);byte[]?inputData?=?inputStr.getBytes();String?code?=?Coder.encryptBASE64(inputData);System.err.println("BASE64加密后:\n"?+?code);byte[]?output?=?Coder.decryptBASE64(code);String?outputStr?=?new?String(output);System.err.println("BASE64解密后:\n"?+?outputStr);//?驗證BASE64加密解密一致性assertEquals(inputStr,?outputStr);//?驗證MD5對于同一內(nèi)容加密是否一致assertArrayEquals(Coder.encryptMD5(inputData),?Coder.encryptMD5(inputData));//?驗證SHA對于同一內(nèi)容加密是否一致assertArrayEquals(Coder.encryptSHA(inputData),?Coder.encryptSHA(inputData));String?key?=?Coder.initMacKey();System.err.println("Mac密鑰:\n"?+?key);//?驗證HMAC對于同一內(nèi)容，同一密鑰加密是否一致assertArrayEquals(Coder.encryptHMAC(inputData,?key),?Coder.encryptHMAC(inputData,?key));BigInteger?md5?=?new?BigInteger(Coder.encryptMD5(inputData));System.err.println("MD5:\n"?+?md5.toString(16));BigInteger?sha?=?new?BigInteger(Coder.encryptSHA(inputData));System.err.println("SHA:\n"?+?sha.toString(32));BigInteger?mac?=?new?BigInteger(Coder.encryptHMAC(inputData,?inputStr));System.err.println("HMAC:\n"?+?mac.toString(16));}
}
原文:
簡單加密
BASE64加密后:
566A5Y2V5Yqg5a+GBASE64解密后:
簡單加密
Mac密鑰:
uGxdHC+6ylRDaik++leFtGwiMbuYUJ6mqHWyhSgF4trVkVBBSQvY/a22xU8XT1RUemdCWW155Bke
pBIpkd7QHg==MD5:
-550b4d90349ad4629462113e7934de56
SHA:
91k9vo7p400cjkgfhjh0ia9qthsjagfn
HMAC:
2287d192387e95694bdbba2fa941009a
引用
??? 接下來我們介紹對稱加密算法，最常用的莫過于DES數(shù)據(jù)加密算法。?
import?java.security.Key;
import?java.security.SecureRandom;import?javax.crypto.Cipher;
import?javax.crypto.KeyGenerator;
import?javax.crypto.SecretKey;
import?javax.crypto.SecretKeyFactory;
import?javax.crypto.spec.DESKeySpec;/***?DES安全編碼組件*?*?<pre>*?支持?DES、DESede(TripleDES,就是3DES)、AES、Blowfish、RC2、RC4(ARCFOUR)*?DES?????????? key?size?must?be?equal?to?56*?DESede(TripleDES)? key?size?must?be?equal?to?112?or?168*?AES?????????? key?size?must?be?equal?to?128,?192?or?256,but?192?and?256?bits?may?not?be?available*?Blowfish????? key?size?must?be?multiple?of?8,?and?can?only?range?from?32?to?448?(inclusive)*?RC2?????????? key?size?must?be?between?40?and?1024?bits*?RC4(ARCFOUR)? key?size?must?be?between?40?and?1024?bits*?具體內(nèi)容?需要關(guān)注?JDK?Document?http://.../docs/technotes/guides/security/SunProviders.html*?</pre>*?*?@author?梁棟*?@version?1.0*?@since?1.0*/
public?abstract?class?DESCoder?extends?Coder?{/***?ALGORITHM?算法?<br>*?可替換為以下任意一種算法，同時key值的size相應(yīng)改變。*?*?<pre>*?DES?????????? key?size?must?be?equal?to?56*?DESede(TripleDES)? key?size?must?be?equal?to?112?or?168*?AES?????????? key?size?must?be?equal?to?128,?192?or?256,but?192?and?256?bits?may?not?be?available*?Blowfish????? key?size?must?be?multiple?of?8,?and?can?only?range?from?32?to?448?(inclusive)*?RC2?????????? key?size?must?be?between?40?and?1024?bits*?RC4(ARCFOUR)? key?size?must?be?between?40?and?1024?bits*?</pre>*?*?在Key?toKey(byte[]?key)方法中使用下述代碼*?<code>SecretKey?secretKey?=?new?SecretKeySpec(key,?ALGORITHM);</code>?替換*?<code>*?DESKeySpec?dks?=?new?DESKeySpec(key);*?SecretKeyFactory?keyFactory?=?SecretKeyFactory.getInstance(ALGORITHM);*?SecretKey?secretKey?=?keyFactory.generateSecret(dks);*?</code>*/public?static?final?String?ALGORITHM?=?"DES";/***?轉(zhuǎn)換密鑰<br>*?*?@param?key*?@return*?@throws?Exception*/private?static?Key?toKey(byte[]?key)?throws?Exception?{DESKeySpec?dks?=?new?DESKeySpec(key);SecretKeyFactory?keyFactory?=?SecretKeyFactory.getInstance(ALGORITHM);SecretKey?secretKey?=?keyFactory.generateSecret(dks);//?當(dāng)使用其他對稱加密算法時，如AES、Blowfish等算法時，用下述代碼替換上述三行代碼//?SecretKey?secretKey?=?new?SecretKeySpec(key,?ALGORITHM);return?secretKey;}/***?解密*?*?@param?data*?@param?key*?@return*?@throws?Exception*/public?static?byte[]?decrypt(byte[]?data,?String?key)?throws?Exception?{Key?k?=?toKey(decryptBASE64(key));Cipher?cipher?=?Cipher.getInstance(ALGORITHM);cipher.init(Cipher.DECRYPT_MODE,?k);return?cipher.doFinal(data);}/***?加密*?*?@param?data*?@param?key*?@return*?@throws?Exception*/public?static?byte[]?encrypt(byte[]?data,?String?key)?throws?Exception?{Key?k?=?toKey(decryptBASE64(key));Cipher?cipher?=?Cipher.getInstance(ALGORITHM);cipher.init(Cipher.ENCRYPT_MODE,?k);return?cipher.doFinal(data);}/***?生成密鑰*?*?@return*?@throws?Exception*/public?static?String?initKey()?throws?Exception?{return?initKey(null);}/***?生成密鑰*?*?@param?seed*?@return*?@throws?Exception*/public?static?String?initKey(String?seed)?throws?Exception?{SecureRandom?secureRandom?=?null;if?(seed?!=?null)?{secureRandom?=?new?SecureRandom(decryptBASE64(seed));}?else?{secureRandom?=?new?SecureRandom();}KeyGenerator?kg?=?KeyGenerator.getInstance(ALGORITHM);kg.init(secureRandom);SecretKey?secretKey?=?kg.generateKey();return?encryptBASE64(secretKey.getEncoded());}
}
import?static?org.junit.Assert.*;import?org.junit.Test;/***?*?@author?梁棟*?@version?1.0*?@since?1.0*/
public?class?DESCoderTest?{@Testpublic?void?test()?throws?Exception?{String?inputStr?=?"DES";String?key?=?DESCoder.initKey();System.err.println("原文:\t"?+?inputStr);System.err.println("密鑰:\t"?+?key);byte[]?inputData?=?inputStr.getBytes();inputData?=?DESCoder.encrypt(inputData,?key);System.err.println("加密后:\t"?+?DESCoder.encryptBASE64(inputData));byte[]?outputData?=?DESCoder.decrypt(inputData,?key);String?outputStr?=?new?String(outputData);System.err.println("解密后:\t"?+?outputStr);assertEquals(inputStr,?outputStr);}
}
原文: DES
密鑰: f3wEtRrV6q0=加密后: C6qe9oNIzRY=解密后: DES
/***?DES??????????key?size?must?be?equal?to?56*?DESede(TripleDES)?key?size?must?be?equal?to?112?or?168*?AES??????????key?size?must?be?equal?to?128,?192?or?256,but?192?and?256?bits?may?not?be?available*?Blowfish?????key?size?must?be?multiple?of?8,?and?can?only?range?from?32?to?448?(inclusive)*?RC2??????????key?size?must?be?between?40?and?1024?bits*?RC4(ARCFOUR)?key?size?must?be?between?40?and?1024?bits**/
??? 除了DES，我們還知道有DESede(TripleDES,就是3DES)、AES、Blowfish、RC2、RC4(ARCFOUR)等多種對稱加密方式，其實現(xiàn)方式大同小異，這里介紹對稱加密的另一個算法——PBE?
import?java.security.Key;
import?java.util.Random;import?javax.crypto.Cipher;
import?javax.crypto.SecretKey;
import?javax.crypto.SecretKeyFactory;
import?javax.crypto.spec.PBEKeySpec;
import?javax.crypto.spec.PBEParameterSpec;/***?PBE安全編碼組件*?*?@author?梁棟*?@version?1.0*?@since?1.0*/
public?abstract?class?PBECoder?extends?Coder?{/***?支持以下任意一種算法*?*?<pre>*?PBEWithMD5AndDES?*?PBEWithMD5AndTripleDES?*?PBEWithSHA1AndDESede*?PBEWithSHA1AndRC2_40*?</pre>*/public?static?final?String?ALGORITHM?=?"PBEWITHMD5andDES";/***?鹽初始化*?*?@return*?@throws?Exception*/public?static?byte[]?initSalt()?throws?Exception?{byte[]?salt?=?new?byte[8];Random?random?=?new?Random();random.nextBytes(salt);return?salt;}/***?轉(zhuǎn)換密鑰<br>*?*?@param?password*?@return*?@throws?Exception*/private?static?Key?toKey(String?password)?throws?Exception?{PBEKeySpec?keySpec?=?new?PBEKeySpec(password.toCharArray());SecretKeyFactory?keyFactory?=?SecretKeyFactory.getInstance(ALGORITHM);SecretKey?secretKey?=?keyFactory.generateSecret(keySpec);return?secretKey;}/***?加密*?*?@param?data?數(shù)據(jù)*?@param?password?密碼*?@param?salt??鹽*?@return*?@throws?Exception*/public?static?byte[]?encrypt(byte[]?data,?String?password,?byte[]?salt)throws?Exception?{Key?key?=?toKey(password);PBEParameterSpec?paramSpec?=?new?PBEParameterSpec(salt,?100);Cipher?cipher?=?Cipher.getInstance(ALGORITHM);cipher.init(Cipher.ENCRYPT_MODE,?key,?paramSpec);return?cipher.doFinal(data);}/***?解密*?*?@param?data??數(shù)據(jù)*?@param?password?密碼*?@param?salt??鹽*?@return*?@throws?Exception*/public?static?byte[]?decrypt(byte[]?data,?String?password,?byte[]?salt)throws?Exception?{Key?key?=?toKey(password);PBEParameterSpec?paramSpec?=?new?PBEParameterSpec(salt,?100);Cipher?cipher?=?Cipher.getInstance(ALGORITHM);cipher.init(Cipher.DECRYPT_MODE,?key,?paramSpec);return?cipher.doFinal(data);}
}
import?static?org.junit.Assert.*;import?org.junit.Test;/***?*?@author?梁棟*?@version?1.0*?@since?1.0*/
public?class?PBECoderTest?{@Testpublic?void?test()?throws?Exception?{String?inputStr?=?"abc";System.err.println("原文:?"?+?inputStr);byte[]?input?=?inputStr.getBytes();String?pwd?=?"efg";System.err.println("密碼:?"?+?pwd);byte[]?salt?=?PBECoder.initSalt();byte[]?data?=?PBECoder.encrypt(input,?pwd,?salt);System.err.println("加密后:?"?+?PBECoder.encryptBASE64(data));byte[]?output?=?PBECoder.decrypt(data,?pwd,?salt);String?outputStr?=?new?String(output);System.err.println("解密后:?"?+?outputStr);assertEquals(inputStr,?outputStr);}}
原文:?abc
密碼:?efg
加密后:?iCZ0uRtaAhE=解密后:?abc
??? 接下來我們介紹典型的非對稱加密算法——RSA?
甲方構(gòu)建密鑰對兒，將公鑰公布給乙方，將私鑰保留。
甲方使用私鑰加密數(shù)據(jù)，然后用私鑰對加密后的數(shù)據(jù)簽名，發(fā)送給乙方簽名以及加密后的數(shù)據(jù)；乙方使用公鑰、簽名來驗證待解密數(shù)據(jù)是否有效，如果有效使用公鑰對數(shù)據(jù)解密。
乙方使用公鑰加密數(shù)據(jù)，向甲方發(fā)送經(jīng)過加密后的數(shù)據(jù)；甲方獲得加密數(shù)據(jù)，通過私鑰解密。
import?java.security.Key;
import?java.security.KeyFactory;
import?java.security.KeyPair;
import?java.security.KeyPairGenerator;
import?java.security.PrivateKey;
import?java.security.PublicKey;
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?java.util.HashMap;
import?java.util.Map;import?javax.crypto.Cipher;/***?RSA安全編碼組件*?*?@author?梁棟*?@version?1.0*?@since?1.0*/
public?abstract?class?RSACoder?extends?Coder?{public?static?final?String?KEY_ALGORITHM?=?"RSA";public?static?final?String?SIGNATURE_ALGORITHM?=?"MD5withRSA";private?static?final?String?PUBLIC_KEY?=?"RSAPublicKey";private?static?final?String?PRIVATE_KEY?=?"RSAPrivateKey";/***?用私鑰對信息生成數(shù)字簽名*?*?@param?data*????????????加密數(shù)據(jù)*?@param?privateKey*????????????私鑰*?*?@return*?@throws?Exception*/public?static?String?sign(byte[]?data,?String?privateKey)?throws?Exception?{//?解密由base64編碼的私鑰byte[]?keyBytes?=?decryptBASE64(privateKey);//?構(gòu)造PKCS8EncodedKeySpec對象PKCS8EncodedKeySpec?pkcs8KeySpec?=?new?PKCS8EncodedKeySpec(keyBytes);//?KEY_ALGORITHM?指定的加密算法KeyFactory?keyFactory?=?KeyFactory.getInstance(KEY_ALGORITHM);//?取私鑰匙對象PrivateKey?priKey?=?keyFactory.generatePrivate(pkcs8KeySpec);//?用私鑰對信息生成數(shù)字簽名Signature?signature?=?Signature.getInstance(SIGNATURE_ALGORITHM);signature.initSign(priKey);signature.update(data);return?encryptBASE64(signature.sign());}/***?校驗數(shù)字簽名*?*?@param?data*????????????加密數(shù)據(jù)*?@param?publicKey*????????????公鑰*?@param?sign*????????????數(shù)字簽名*?*?@return?校驗成功返回true?失敗返回false*?@throws?Exception*?*/public?static?boolean?verify(byte[]?data,?String?publicKey,?String?sign)throws?Exception?{//?解密由base64編碼的公鑰byte[]?keyBytes?=?decryptBASE64(publicKey);//?構(gòu)造X509EncodedKeySpec對象X509EncodedKeySpec?keySpec?=?new?X509EncodedKeySpec(keyBytes);//?KEY_ALGORITHM?指定的加密算法KeyFactory?keyFactory?=?KeyFactory.getInstance(KEY_ALGORITHM);//?取公鑰匙對象PublicKey?pubKey?=?keyFactory.generatePublic(keySpec);Signature?signature?=?Signature.getInstance(SIGNATURE_ALGORITHM);signature.initVerify(pubKey);signature.update(data);//?驗證簽名是否正常return?signature.verify(decryptBASE64(sign));}/***?解密<br>*?用私鑰解密*?*?@param?data*?@param?key*?@return*?@throws?Exception*/public?static?byte[]?decryptByPrivateKey(byte[]?data,?String?key)throws?Exception?{//?對密鑰解密byte[]?keyBytes?=?decryptBASE64(key);//?取得私鑰PKCS8EncodedKeySpec?pkcs8KeySpec?=?new?PKCS8EncodedKeySpec(keyBytes);KeyFactory?keyFactory?=?KeyFactory.getInstance(KEY_ALGORITHM);Key?privateKey?=?keyFactory.generatePrivate(pkcs8KeySpec);//?對數(shù)據(jù)解密Cipher?cipher?=?Cipher.getInstance(keyFactory.getAlgorithm());cipher.init(Cipher.DECRYPT_MODE,?privateKey);return?cipher.doFinal(data);}/***?解密<br>*?用私鑰解密*?*?@param?data*?@param?key*?@return*?@throws?Exception*/public?static?byte[]?decryptByPublicKey(byte[]?data,?String?key)throws?Exception?{//?對密鑰解密byte[]?keyBytes?=?decryptBASE64(key);//?取得公鑰X509EncodedKeySpec?x509KeySpec?=?new?X509EncodedKeySpec(keyBytes);KeyFactory?keyFactory?=?KeyFactory.getInstance(KEY_ALGORITHM);Key?publicKey?=?keyFactory.generatePublic(x509KeySpec);//?對數(shù)據(jù)解密Cipher?cipher?=?Cipher.getInstance(keyFactory.getAlgorithm());cipher.init(Cipher.DECRYPT_MODE,?publicKey);return?cipher.doFinal(data);}/***?加密<br>*?用公鑰加密*?*?@param?data*?@param?key*?@return*?@throws?Exception*/public?static?byte[]?encryptByPublicKey(byte[]?data,?String?key)throws?Exception?{//?對公鑰解密byte[]?keyBytes?=?decryptBASE64(key);//?取得公鑰X509EncodedKeySpec?x509KeySpec?=?new?X509EncodedKeySpec(keyBytes);KeyFactory?keyFactory?=?KeyFactory.getInstance(KEY_ALGORITHM);Key?publicKey?=?keyFactory.generatePublic(x509KeySpec);//?對數(shù)據(jù)加密Cipher?cipher?=?Cipher.getInstance(keyFactory.getAlgorithm());cipher.init(Cipher.ENCRYPT_MODE,?publicKey);return?cipher.doFinal(data);}/***?加密<br>*?用私鑰加密*?*?@param?data*?@param?key*?@return*?@throws?Exception*/public?static?byte[]?encryptByPrivateKey(byte[]?data,?String?key)throws?Exception?{//?對密鑰解密byte[]?keyBytes?=?decryptBASE64(key);//?取得私鑰PKCS8EncodedKeySpec?pkcs8KeySpec?=?new?PKCS8EncodedKeySpec(keyBytes);KeyFactory?keyFactory?=?KeyFactory.getInstance(KEY_ALGORITHM);Key?privateKey?=?keyFactory.generatePrivate(pkcs8KeySpec);//?對數(shù)據(jù)加密Cipher?cipher?=?Cipher.getInstance(keyFactory.getAlgorithm());cipher.init(Cipher.ENCRYPT_MODE,?privateKey);return?cipher.doFinal(data);}/***?取得私鑰*?*?@param?keyMap*?@return*?@throws?Exception*/public?static?String?getPrivateKey(Map<String,?Object>?keyMap)throws?Exception?{Key?key?=?(Key)?keyMap.get(PRIVATE_KEY);return?encryptBASE64(key.getEncoded());}/***?取得公鑰*?*?@param?keyMap*?@return*?@throws?Exception*/public?static?String?getPublicKey(Map<String,?Object>?keyMap)throws?Exception?{Key?key?=?(Key)?keyMap.get(PUBLIC_KEY);return?encryptBASE64(key.getEncoded());}/***?初始化密鑰*?*?@return*?@throws?Exception*/public?static?Map<String,?Object>?initKey()?throws?Exception?{KeyPairGenerator?keyPairGen?=?KeyPairGenerator.getInstance(KEY_ALGORITHM);keyPairGen.initialize(1024);KeyPair?keyPair?=?keyPairGen.generateKeyPair();//?公鑰RSAPublicKey?publicKey?=?(RSAPublicKey)?keyPair.getPublic();//?私鑰RSAPrivateKey?privateKey?=?(RSAPrivateKey)?keyPair.getPrivate();Map<String,?Object>?keyMap?=?new?HashMap<String,?Object>(2);keyMap.put(PUBLIC_KEY,?publicKey);keyMap.put(PRIVATE_KEY,?privateKey);return?keyMap;}
}
import?static?org.junit.Assert.*;import?org.junit.Before;
import?org.junit.Test;import?java.util.Map;/***?*?@author?梁棟*?@version?1.0*?@since?1.0*/
public?class?RSACoderTest?{private?String?publicKey;private?String?privateKey;@Beforepublic?void?setUp()?throws?Exception?{Map<String,?Object>?keyMap?=?RSACoder.initKey();publicKey?=?RSACoder.getPublicKey(keyMap);privateKey?=?RSACoder.getPrivateKey(keyMap);System.err.println("公鑰:?\n\r"?+?publicKey);System.err.println("私鑰：?\n\r"?+?privateKey);}@Testpublic?void?test()?throws?Exception?{System.err.println("公鑰加密——私鑰解密");String?inputStr?=?"abc";byte[]?data?=?inputStr.getBytes();byte[]?encodedData?=?RSACoder.encryptByPublicKey(data,?publicKey);byte[]?decodedData?=?RSACoder.decryptByPrivateKey(encodedData,privateKey);String?outputStr?=?new?String(decodedData);System.err.println("加密前:?"?+?inputStr?+?"\n\r"?+?"解密后:?"?+?outputStr);assertEquals(inputStr,?outputStr);}@Testpublic?void?testSign()?throws?Exception?{System.err.println("私鑰加密——公鑰解密");String?inputStr?=?"sign";byte[]?data?=?inputStr.getBytes();byte[]?encodedData?=?RSACoder.encryptByPrivateKey(data,?privateKey);byte[]?decodedData?=?RSACoder.decryptByPublicKey(encodedData,?publicKey);String?outputStr?=?new?String(decodedData);System.err.println("加密前:?"?+?inputStr?+?"\n\r"?+?"解密后:?"?+?outputStr);assertEquals(inputStr,?outputStr);System.err.println("私鑰簽名——公鑰驗證簽名");//?產(chǎn)生簽名String?sign?=?RSACoder.sign(encodedData,?privateKey);System.err.println("簽名:\r"?+?sign);//?驗證簽名boolean?status?=?RSACoder.verify(encodedData,?publicKey,?sign);System.err.println("狀態(tài):\r"?+?status);assertTrue(status);}}
公鑰:?MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCYU/+I0+z1aBl5X6DUUOHQ7FZpmBSDbKTtx89J
EcB64jFCkunELT8qiKly7fzEqD03g8ALlu5XvX+bBqHFy7YPJJP0ekE2X3wjUnh2NxlqpH3/B/xm
1ZdSlCwDIkbijhBVDjA/bu5BObhZqQmDwIxlQInL9oVz+o6FbAZCyHBd7wIDAQAB私鑰：?MIICdgIBADANBgkqhkiG9w0BAQEFAASCAmAwggJcAgEAAoGBAJhT/4jT7PVoGXlfoNRQ4dDsVmmY
FINspO3Hz0kRwHriMUKS6cQtPyqIqXLt/MSoPTeDwAuW7le9f5sGocXLtg8kk/R6QTZffCNSeHY3
GWqkff8H/GbVl1KULAMiRuKOEFUOMD9u7kE5uFmpCYPAjGVAicv2hXP6joVsBkLIcF3vAgMBAAEC
gYBvZHWoZHmS2EZQqKqeuGr58eobG9hcZzWQoJ4nq/CarBAjw/VovUHE490uK3S9ht4FW7Yzg3LV
/MB06Huifh6qf/X9NQA7SeZRRC8gnCQk6JuDIEVJOud5jU+9tyumJakDKodQ3Jf2zQtNr+5ZdEPl
uwWgv9c4kmpjhAdyMuQmYQJBANn6pcgvyYaia52dnu+yBUsGkaFfwXkzFSExIbi0MXTkhEb/ER/D
rLytukkUu5S5ecz/KBa8U4xIslZDYQbLz5ECQQCy5dutt7RsxN4+dxCWn0/1FrkWl2G329Ucewm3
QU9CKu4D+7Kqdj+Ha3lXP8F0Etaaapi7+EfkRUpukn2ItZV/AkEAlk+I0iphxT1rCB0Q5CjWDY5S
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o9dchENPtlsCM9C/Sd2EWpqISSUlmfugZbJBwR5pQ5XeMUqKeXZYpP+HEBj1nS+tMH9u2/IGEwJA
fL8mZiZXan/oBKrblAbplNcKWGRVD/3y65042PAEeghahlJMiYquV5DzZajuuT0wbJ5xQuZB01+X
nfpFpBJ2dw==公鑰加密——私鑰解密
加密前:?abc解密后:?abc
公鑰:?MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDdOj40yEB48XqWxmPILmJAc7UecIN7F32etSHF
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l9qq1kwSK7ZkGAgodEn3yIILVmQDuEImHOXFtulvJ71ka07u3LuwUNdB/wIDAQAB私鑰：?MIICdwIBADANBgkqhkiG9w0BAQEFAASCAmEwggJdAgEAAoGBAN06PjTIQHjxepbGY8guYkBztR5w
g3sXfZ61IcX2vBu4SHf6JM84ZLGGhJCk4QPS85vRkgyQFdlKCzEtoFKKfZFnT1gpZGO2kIDSQOSI
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j9gUxaxi1MQs+C1ZgDF2xmECQQDy70bQntbRfysP+ppCtd56YRnES1Tyekw0wryS2tr+ivQJl7JF
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9jA/Wc0wp29SbGTh5CcMuGpXm1g0M+FKW3dGiHgS3rVUKim4owJAbnxgapUzAgiiHxxMeDaavnHW
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mkRiwY6zApE4Z6tPl1V33ymSVovvUzHnOdD1SKQdD5t+UV/crb3QVi8ED0t2B0u0ZSPfDT/D7kMC
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I2k1Afmrwyw=私鑰加密——公鑰解密
加密前:?sign解密后:?sign
私鑰簽名——公鑰驗證簽名
簽名:
ud1RsIwmSC1pN22I4IXteg1VD2FbiehKUfNxgVSHzvQNIK+d20FCkHCqh9djP3h94iWnIUY0ifU+
mbJkhAl/i5krExOE0hknOnPMcEP+lZV1RbJI2zG2YooSp2XDleqrQk5e/QF2Mx0Zxt8Xsg7ucVpn
i3wwbYWs9wSzIf0UjlM=狀態(tài):
true
??? 接下來我們分析DH加密算法，一種適基于密鑰一致協(xié)議的加密算法。?
?
import?java.security.Key;
import?java.security.KeyFactory;
import?java.security.KeyPair;
import?java.security.KeyPairGenerator;
import?java.security.PublicKey;
import?java.security.spec.PKCS8EncodedKeySpec;
import?java.security.spec.X509EncodedKeySpec;
import?java.util.HashMap;
import?java.util.Map;import?javax.crypto.Cipher;
import?javax.crypto.KeyAgreement;
import?javax.crypto.SecretKey;
import?javax.crypto.interfaces.DHPrivateKey;
import?javax.crypto.interfaces.DHPublicKey;
import?javax.crypto.spec.DHParameterSpec;/***?DH安全編碼組件*?*?@author?梁棟*?@version?1.0*?@since?1.0*/
public?abstract?class?DHCoder?extends?Coder?{public?static?final?String?ALGORITHM?=?"DH";/***?默認密鑰字節(jié)數(shù)*?*?<pre>*?DH*?Default?Keysize?1024??*?Keysize?must?be?a?multiple?of?64,?ranging?from?512?to?1024?(inclusive).*?</pre>*/private?static?final?int?KEY_SIZE?=?1024;/***?DH加密下需要一種對稱加密算法對數(shù)據(jù)加密，這里我們使用DES，也可以使用其他對稱加密算法。*/public?static?final?String?SECRET_ALGORITHM?=?"DES";private?static?final?String?PUBLIC_KEY?=?"DHPublicKey";private?static?final?String?PRIVATE_KEY?=?"DHPrivateKey";/***?初始化甲方密鑰*?*?@return*?@throws?Exception*/public?static?Map<String,?Object>?initKey()?throws?Exception?{KeyPairGenerator?keyPairGenerator?=?KeyPairGenerator.getInstance(ALGORITHM);keyPairGenerator.initialize(KEY_SIZE);KeyPair?keyPair?=?keyPairGenerator.generateKeyPair();//?甲方公鑰DHPublicKey?publicKey?=?(DHPublicKey)?keyPair.getPublic();//?甲方私鑰DHPrivateKey?privateKey?=?(DHPrivateKey)?keyPair.getPrivate();Map<String,?Object>?keyMap?=?new?HashMap<String,?Object>(2);keyMap.put(PUBLIC_KEY,?publicKey);keyMap.put(PRIVATE_KEY,?privateKey);return?keyMap;}/***?初始化乙方密鑰*?*?@param?key*????????????甲方公鑰*?@return*?@throws?Exception*/public?static?Map<String,?Object>?initKey(String?key)?throws?Exception?{//?解析甲方公鑰byte[]?keyBytes?=?decryptBASE64(key);X509EncodedKeySpec?x509KeySpec?=?new?X509EncodedKeySpec(keyBytes);KeyFactory?keyFactory?=?KeyFactory.getInstance(ALGORITHM);PublicKey?pubKey?=?keyFactory.generatePublic(x509KeySpec);//?由甲方公鑰構(gòu)建乙方密鑰DHParameterSpec?dhParamSpec?=?((DHPublicKey)?pubKey).getParams();KeyPairGenerator?keyPairGenerator?=?KeyPairGenerator.getInstance(keyFactory.getAlgorithm());keyPairGenerator.initialize(dhParamSpec);KeyPair?keyPair?=?keyPairGenerator.generateKeyPair();//?乙方公鑰DHPublicKey?publicKey?=?(DHPublicKey)?keyPair.getPublic();//?乙方私鑰DHPrivateKey?privateKey?=?(DHPrivateKey)?keyPair.getPrivate();Map<String,?Object>?keyMap?=?new?HashMap<String,?Object>(2);keyMap.put(PUBLIC_KEY,?publicKey);keyMap.put(PRIVATE_KEY,?privateKey);return?keyMap;}/***?加密<br>*?*?@param?data*????????????待加密數(shù)據(jù)*?@param?publicKey*????????????甲方公鑰*?@param?privateKey*????????????乙方私鑰*?@return*?@throws?Exception*/public?static?byte[]?encrypt(byte[]?data,?String?publicKey,String?privateKey)?throws?Exception?{//?生成本地密鑰SecretKey?secretKey?=?getSecretKey(publicKey,?privateKey);//?數(shù)據(jù)加密Cipher?cipher?=?Cipher.getInstance(secretKey.getAlgorithm());cipher.init(Cipher.ENCRYPT_MODE,?secretKey);return?cipher.doFinal(data);}/***?解密<br>*?*?@param?data*????????????待解密數(shù)據(jù)*?@param?publicKey*????????????乙方公鑰*?@param?privateKey*????????????乙方私鑰*?@return*?@throws?Exception*/public?static?byte[]?decrypt(byte[]?data,?String?publicKey,String?privateKey)?throws?Exception?{//?生成本地密鑰SecretKey?secretKey?=?getSecretKey(publicKey,?privateKey);//?數(shù)據(jù)解密Cipher?cipher?=?Cipher.getInstance(secretKey.getAlgorithm());cipher.init(Cipher.DECRYPT_MODE,?secretKey);return?cipher.doFinal(data);}/***?構(gòu)建密鑰*?*?@param?publicKey*????????????公鑰*?@param?privateKey*????????????私鑰*?@return*?@throws?Exception*/private?static?SecretKey?getSecretKey(String?publicKey,?String?privateKey)throws?Exception?{//?初始化公鑰byte[]?pubKeyBytes?=?decryptBASE64(publicKey);KeyFactory?keyFactory?=?KeyFactory.getInstance(ALGORITHM);X509EncodedKeySpec?x509KeySpec?=?new?X509EncodedKeySpec(pubKeyBytes);PublicKey?pubKey?=?keyFactory.generatePublic(x509KeySpec);//?初始化私鑰byte[]?priKeyBytes?=?decryptBASE64(privateKey);PKCS8EncodedKeySpec?pkcs8KeySpec?=?new?PKCS8EncodedKeySpec(priKeyBytes);Key?priKey?=?keyFactory.generatePrivate(pkcs8KeySpec);KeyAgreement?keyAgree?=?KeyAgreement.getInstance(keyFactory.getAlgorithm());keyAgree.init(priKey);keyAgree.doPhase(pubKey,?true);//?生成本地密鑰SecretKey?secretKey?=?keyAgree.generateSecret(SECRET_ALGORITHM);return?secretKey;}/***?取得私鑰*?*?@param?keyMap*?@return*?@throws?Exception*/public?static?String?getPrivateKey(Map<String,?Object>?keyMap)throws?Exception?{Key?key?=?(Key)?keyMap.get(PRIVATE_KEY);return?encryptBASE64(key.getEncoded());}/***?取得公鑰*?*?@param?keyMap*?@return*?@throws?Exception*/public?static?String?getPublicKey(Map<String,?Object>?keyMap)throws?Exception?{Key?key?=?(Key)?keyMap.get(PUBLIC_KEY);return?encryptBASE64(key.getEncoded());}
}
import?static?org.junit.Assert.*;import?java.util.Map;import?org.junit.Test;/***?*?@author?梁棟*?@version?1.0*?@since?1.0*/
public?class?DHCoderTest?{@Testpublic?void?test()?throws?Exception?{//?生成甲方密鑰對兒Map<String,?Object>?aKeyMap?=?DHCoder.initKey();String?aPublicKey?=?DHCoder.getPublicKey(aKeyMap);String?aPrivateKey?=?DHCoder.getPrivateKey(aKeyMap);System.err.println("甲方公鑰:\r"?+?aPublicKey);System.err.println("甲方私鑰:\r"?+?aPrivateKey);//?由甲方公鑰產(chǎn)生本地密鑰對兒Map<String,?Object>?bKeyMap?=?DHCoder.initKey(aPublicKey);String?bPublicKey?=?DHCoder.getPublicKey(bKeyMap);String?bPrivateKey?=?DHCoder.getPrivateKey(bKeyMap);System.err.println("乙方公鑰:\r"?+?bPublicKey);System.err.println("乙方私鑰:\r"?+?bPrivateKey);String?aInput?=?"abc?";System.err.println("原文:?"?+?aInput);//?由甲方公鑰，乙方私鑰構(gòu)建密文byte[]?aCode?=?DHCoder.encrypt(aInput.getBytes(),?aPublicKey,bPrivateKey);//?由乙方公鑰，甲方私鑰解密byte[]?aDecode?=?DHCoder.decrypt(aCode,?bPublicKey,?aPrivateKey);String?aOutput?=?(new?String(aDecode));System.err.println("解密:?"?+?aOutput);assertEquals(aInput,?aOutput);System.err.println("?===============反過來加密解密==================?");String?bInput?=?"def?";System.err.println("原文:?"?+?bInput);//?由乙方公鑰，甲方私鑰構(gòu)建密文byte[]?bCode?=?DHCoder.encrypt(bInput.getBytes(),?bPublicKey,aPrivateKey);//?由甲方公鑰，乙方私鑰解密byte[]?bDecode?=?DHCoder.decrypt(bCode,?aPublicKey,?bPrivateKey);String?bOutput?=?(new?String(bDecode));System.err.println("解密:?"?+?bOutput);assertEquals(bInput,?bOutput);}}
甲方公鑰:
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MIHRAgEAMIGXBgkqhkiG9w0BAwEwgYkCQQD8poLOjhLKuibvzPcRDlJtsHiwXt7LzR60ogjzrhYX
rgHzW5Gkfm32NBPF4S7QiZvNEyrNUNmRUb3EPuc3WS4XAkBnhHGyepz0TukaScUUfbGpqvJE8FpD
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eHyD+4Hfb+xR0uoIGR1oL9i9Nk6g2AAuaDPgEVWHn+QXID13yL/uDos=乙方公鑰:
MIHfMIGXBgkqhkiG9w0BAwEwgYkCQQD8poLOjhLKuibvzPcRDlJtsHiwXt7LzR60ogjzrhYXrgHz
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kx0tFCcbnjUDC3H9c9oXkGmzLik1Yw4cIGI1TQ2iCmxBblC+eUykAgIBgANDAAJAVEYSfBA+I9nr
dWw3OBv475C+eBrWBBYqt0m6/eu4ptuDQHwV4MmUtKAC2wc2nNrdb1wmBhY1X8RnWkJ1XmdDbQ==乙方私鑰:
MIHSAgEAMIGXBgkqhkiG9w0BAwEwgYkCQQD8poLOjhLKuibvzPcRDlJtsHiwXt7LzR60ogjzrhYX
rgHzW5Gkfm32NBPF4S7QiZvNEyrNUNmRUb3EPuc3WS4XAkBnhHGyepz0TukaScUUfbGpqvJE8FpD
TWSGkx0tFCcbnjUDC3H9c9oXkGmzLik1Yw4cIGI1TQ2iCmxBblC+eUykAgIBgAQzAjEAqaZiCdXp
2iNpdBlHRaO9ir70wo2n32xNlIzIX19VLSPCDdeUWkgRv4CEj/8k+/yd原文:?abc?
解密:?abc?===============反過來加密解密==================?
原文:?def?
解密:?def
??? 接下來我們介紹DSA數(shù)字簽名，非對稱加密的另一種實現(xiàn)。?
import?java.security.Key;
import?java.security.KeyFactory;
import?java.security.KeyPair;
import?java.security.KeyPairGenerator;
import?java.security.PrivateKey;
import?java.security.PublicKey;
import?java.security.SecureRandom;
import?java.security.Signature;
import?java.security.interfaces.DSAPrivateKey;
import?java.security.interfaces.DSAPublicKey;
import?java.security.spec.PKCS8EncodedKeySpec;
import?java.security.spec.X509EncodedKeySpec;
import?java.util.HashMap;
import?java.util.Map;/***?DSA安全編碼組件*?*?@author?梁棟*?@version?1.0*?@since?1.0*/
public?abstract?class?DSACoder?extends?Coder?{public?static?final?String?ALGORITHM?=?"DSA";/***?默認密鑰字節(jié)數(shù)*?*?<pre>*?DSA?*?Default?Keysize?1024??*?Keysize?must?be?a?multiple?of?64,?ranging?from?512?to?1024?(inclusive).*?</pre>*/private?static?final?int?KEY_SIZE?=?1024;/***?默認種子*/private?static?final?String?DEFAULT_SEED?=?"0f22507a10bbddd07d8a3082122966e3";private?static?final?String?PUBLIC_KEY?=?"DSAPublicKey";private?static?final?String?PRIVATE_KEY?=?"DSAPrivateKey";/***?用私鑰對信息生成數(shù)字簽名*?*?@param?data*????????????加密數(shù)據(jù)*?@param?privateKey*????????????私鑰*?*?@return*?@throws?Exception*/public?static?String?sign(byte[]?data,?String?privateKey)?throws?Exception?{//?解密由base64編碼的私鑰byte[]?keyBytes?=?decryptBASE64(privateKey);//?構(gòu)造PKCS8EncodedKeySpec對象PKCS8EncodedKeySpec?pkcs8KeySpec?=?new?PKCS8EncodedKeySpec(keyBytes);//?KEY_ALGORITHM?指定的加密算法KeyFactory?keyFactory?=?KeyFactory.getInstance(ALGORITHM);//?取私鑰匙對象PrivateKey?priKey?=?keyFactory.generatePrivate(pkcs8KeySpec);//?用私鑰對信息生成數(shù)字簽名Signature?signature?=?Signature.getInstance(keyFactory.getAlgorithm());signature.initSign(priKey);signature.update(data);return?encryptBASE64(signature.sign());}/***?校驗數(shù)字簽名*?*?@param?data*????????????加密數(shù)據(jù)*?@param?publicKey*????????????公鑰*?@param?sign*????????????數(shù)字簽名*?*?@return?校驗成功返回true?失敗返回false*?@throws?Exception*?*/public?static?boolean?verify(byte[]?data,?String?publicKey,?String?sign)throws?Exception?{//?解密由base64編碼的公鑰byte[]?keyBytes?=?decryptBASE64(publicKey);//?構(gòu)造X509EncodedKeySpec對象X509EncodedKeySpec?keySpec?=?new?X509EncodedKeySpec(keyBytes);//?ALGORITHM?指定的加密算法KeyFactory?keyFactory?=?KeyFactory.getInstance(ALGORITHM);//?取公鑰匙對象PublicKey?pubKey?=?keyFactory.generatePublic(keySpec);Signature?signature?=?Signature.getInstance(keyFactory.getAlgorithm());signature.initVerify(pubKey);signature.update(data);//?驗證簽名是否正常return?signature.verify(decryptBASE64(sign));}/***?生成密鑰*?*?@param?seed*????????????種子*?@return?密鑰對象*?@throws?Exception*/public?static?Map<String,?Object>?initKey(String?seed)?throws?Exception?{KeyPairGenerator?keygen?=?KeyPairGenerator.getInstance(ALGORITHM);//?初始化隨機產(chǎn)生器SecureRandom?secureRandom?=?new?SecureRandom();secureRandom.setSeed(seed.getBytes());keygen.initialize(KEY_SIZE,?secureRandom);KeyPair?keys?=?keygen.genKeyPair();DSAPublicKey?publicKey?=?(DSAPublicKey)?keys.getPublic();DSAPrivateKey?privateKey?=?(DSAPrivateKey)?keys.getPrivate();Map<String,?Object>?map?=?new?HashMap<String,?Object>(2);map.put(PUBLIC_KEY,?publicKey);map.put(PRIVATE_KEY,?privateKey);return?map;}/***?默認生成密鑰*?*?@return?密鑰對象*?@throws?Exception*/public?static?Map<String,?Object>?initKey()?throws?Exception?{return?initKey(DEFAULT_SEED);}/***?取得私鑰*?*?@param?keyMap*?@return*?@throws?Exception*/public?static?String?getPrivateKey(Map<String,?Object>?keyMap)throws?Exception?{Key?key?=?(Key)?keyMap.get(PRIVATE_KEY);return?encryptBASE64(key.getEncoded());}/***?取得公鑰*?*?@param?keyMap*?@return*?@throws?Exception*/public?static?String?getPublicKey(Map<String,?Object>?keyMap)throws?Exception?{Key?key?=?(Key)?keyMap.get(PUBLIC_KEY);return?encryptBASE64(key.getEncoded());}
}
import?static?org.junit.Assert.*;import?java.util.Map;import?org.junit.Test;/***?*?@author?梁棟*?@version?1.0*?@since?1.0*/
public?class?DSACoderTest?{@Testpublic?void?test()?throws?Exception?{String?inputStr?=?"abc";byte[]?data?=?inputStr.getBytes();//?構(gòu)建密鑰Map<String,?Object>?keyMap?=?DSACoder.initKey();//?獲得密鑰String?publicKey?=?DSACoder.getPublicKey(keyMap);String?privateKey?=?DSACoder.getPrivateKey(keyMap);System.err.println("公鑰:\r"?+?publicKey);System.err.println("私鑰:\r"?+?privateKey);//?產(chǎn)生簽名String?sign?=?DSACoder.sign(data,?privateKey);System.err.println("簽名:\r"?+?sign);//?驗證簽名boolean?status?=?DSACoder.verify(data,?publicKey,?sign);System.err.println("狀態(tài):\r"?+?status);assertTrue(status);}}
公鑰:
MIIBtzCCASwGByqGSM44BAEwggEfAoGBAP1/U4EddRIpUt9KnC7s5Of2EbdSPO9EAMMeP4C2USZp
RV1AIlH7WT2NWPq/xfW6MPbLm1Vs14E7gB00b/JmYLdrmVClpJ+f6AR7ECLCT7up1/63xhv4O1fn
xqimFQ8E+4P208UewwI1VBNaFpEy9nXzrith1yrv8iIDGZ3RSAHHAhUAl2BQjxUjC8yykrmCouuE
C/BYHPUCgYEA9+GghdabPd7LvKtcNrhXuXmUr7v6OuqC+VdMCz0HgmdRWVeOutRZT+ZxBxCBgLRJ
FnEj6EwoFhO3zwkyjMim4TwWeotUfI0o4KOuHiuzpnWRbqN/C/ohNWLx+2J6ASQ7zKTxvqhRkImo
g9/hWuWfBpKLZl6Ae1UlZAFMO/7PSSoDgYQAAoGAIu4RUlcQLp49PI0MrbssOY+3uySVnp0TULSv
5T4VaHoKzsLHgGTrwOvsGA+V3yCNl2WDu3D84bSLF7liTWgOj+SMOEaPk4VyRTlLXZWGPsf1Mfd9
21XAbMeVyKDSHHVGbMjBScajf3bXooYQMlyoHiOt/WrCo+mv7efstMM0PGo=私鑰:
MIIBTAIBADCCASwGByqGSM44BAEwggEfAoGBAP1/U4EddRIpUt9KnC7s5Of2EbdSPO9EAMMeP4C2
USZpRV1AIlH7WT2NWPq/xfW6MPbLm1Vs14E7gB00b/JmYLdrmVClpJ+f6AR7ECLCT7up1/63xhv4
O1fnxqimFQ8E+4P208UewwI1VBNaFpEy9nXzrith1yrv8iIDGZ3RSAHHAhUAl2BQjxUjC8yykrmC
ouuEC/BYHPUCgYEA9+GghdabPd7LvKtcNrhXuXmUr7v6OuqC+VdMCz0HgmdRWVeOutRZT+ZxBxCB
gLRJFnEj6EwoFhO3zwkyjMim4TwWeotUfI0o4KOuHiuzpnWRbqN/C/ohNWLx+2J6ASQ7zKTxvqhR
kImog9/hWuWfBpKLZl6Ae1UlZAFMO/7PSSoEFwIVAIegLUtmm2oQKQJTOiLugHTSjl/q簽名:
MC0CFQCMg0J/uZmF8GuRpr3TNq48w60nDwIUJCyYNah+HtbU6NcQfy8Ac6LeLQs=狀態(tài):
true
ECC?
import?java.math.BigInteger;
import?java.security.Key;
import?java.security.KeyFactory;
import?java.security.interfaces.ECPrivateKey;
import?java.security.interfaces.ECPublicKey;
import?java.security.spec.ECFieldF2m;
import?java.security.spec.ECParameterSpec;
import?java.security.spec.ECPoint;
import?java.security.spec.ECPrivateKeySpec;
import?java.security.spec.ECPublicKeySpec;
import?java.security.spec.EllipticCurve;
import?java.security.spec.PKCS8EncodedKeySpec;
import?java.security.spec.X509EncodedKeySpec;
import?java.util.HashMap;
import?java.util.Map;import?javax.crypto.Cipher;
import?javax.crypto.NullCipher;import?sun.security.ec.ECKeyFactory;
import?sun.security.ec.ECPrivateKeyImpl;
import?sun.security.ec.ECPublicKeyImpl;/***?ECC安全編碼組件*?*?@author?梁棟*?@version?1.0*?@since?1.0*/
public?abstract?class?ECCCoder?extends?Coder?{public?static?final?String?ALGORITHM?=?"EC";private?static?final?String?PUBLIC_KEY?=?"ECCPublicKey";private?static?final?String?PRIVATE_KEY?=?"ECCPrivateKey";/***?解密<br>*?用私鑰解密*?*?@param?data*?@param?key*?@return*?@throws?Exception*/public?static?byte[]?decrypt(byte[]?data,?String?key)?throws?Exception?{//?對密鑰解密byte[]?keyBytes?=?decryptBASE64(key);//?取得私鑰PKCS8EncodedKeySpec?pkcs8KeySpec?=?new?PKCS8EncodedKeySpec(keyBytes);KeyFactory?keyFactory?=?ECKeyFactory.INSTANCE;ECPrivateKey?priKey?=?(ECPrivateKey)?keyFactory.generatePrivate(pkcs8KeySpec);ECPrivateKeySpec?ecPrivateKeySpec?=?new?ECPrivateKeySpec(priKey.getS(),priKey.getParams());//?對數(shù)據(jù)解密//?TODO?Chipher不支持EC算法?未能實現(xiàn)Cipher?cipher?=?new?NullCipher();//?Cipher.getInstance(ALGORITHM,?keyFactory.getProvider());cipher.init(Cipher.DECRYPT_MODE,?priKey,?ecPrivateKeySpec.getParams());return?cipher.doFinal(data);}/***?加密<br>*?用公鑰加密*?*?@param?data*?@param?privateKey*?@return*?@throws?Exception*/public?static?byte[]?encrypt(byte[]?data,?String?privateKey)throws?Exception?{//?對公鑰解密byte[]?keyBytes?=?decryptBASE64(privateKey);//?取得公鑰X509EncodedKeySpec?x509KeySpec?=?new?X509EncodedKeySpec(keyBytes);KeyFactory?keyFactory?=?ECKeyFactory.INSTANCE;ECPublicKey?pubKey?=?(ECPublicKey)?keyFactory.generatePublic(x509KeySpec);ECPublicKeySpec?ecPublicKeySpec?=?new?ECPublicKeySpec(pubKey.getW(),pubKey.getParams());//?對數(shù)據(jù)加密//?TODO?Chipher不支持EC算法?未能實現(xiàn)Cipher?cipher?=?new?NullCipher();//?Cipher.getInstance(ALGORITHM,?keyFactory.getProvider());cipher.init(Cipher.ENCRYPT_MODE,?pubKey,?ecPublicKeySpec.getParams());return?cipher.doFinal(data);}/***?取得私鑰*?*?@param?keyMap*?@return*?@throws?Exception*/public?static?String?getPrivateKey(Map<String,?Object>?keyMap)throws?Exception?{Key?key?=?(Key)?keyMap.get(PRIVATE_KEY);return?encryptBASE64(key.getEncoded());}/***?取得公鑰*?*?@param?keyMap*?@return*?@throws?Exception*/public?static?String?getPublicKey(Map<String,?Object>?keyMap)throws?Exception?{Key?key?=?(Key)?keyMap.get(PUBLIC_KEY);return?encryptBASE64(key.getEncoded());}/***?初始化密鑰*?*?@return*?@throws?Exception*/public?static?Map<String,?Object>?initKey()?throws?Exception?{BigInteger?x1?=?new?BigInteger("2fe13c0537bbc11acaa07d793de4e6d5e5c94eee8",?16);BigInteger?x2?=?new?BigInteger("289070fb05d38ff58321f2e800536d538ccdaa3d9",?16);ECPoint?g?=?new?ECPoint(x1,?x2);//?the?order?of?generatorBigInteger?n?=?new?BigInteger("5846006549323611672814741753598448348329118574063",?10);//?the?cofactorint?h?=?2;int?m?=?163;int[]?ks?=?{?7,?6,?3?};ECFieldF2m?ecField?=?new?ECFieldF2m(m,?ks);//?y^2+xy=x^3+x^2+1BigInteger?a?=?new?BigInteger("1",?2);BigInteger?b?=?new?BigInteger("1",?2);EllipticCurve?ellipticCurve?=?new?EllipticCurve(ecField,?a,?b);ECParameterSpec?ecParameterSpec?=?new?ECParameterSpec(ellipticCurve,?g,n,?h);//?公鑰ECPublicKey?publicKey?=?new?ECPublicKeyImpl(g,?ecParameterSpec);BigInteger?s?=?new?BigInteger("1234006549323611672814741753598448348329118574063",?10);//?私鑰ECPrivateKey?privateKey?=?new?ECPrivateKeyImpl(s,?ecParameterSpec);Map<String,?Object>?keyMap?=?new?HashMap<String,?Object>(2);keyMap.put(PUBLIC_KEY,?publicKey);keyMap.put(PRIVATE_KEY,?privateKey);return?keyMap;}}
import?static?org.junit.Assert.*;import?java.math.BigInteger;
import?java.security.spec.ECFieldF2m;
import?java.security.spec.ECParameterSpec;
import?java.security.spec.ECPoint;
import?java.security.spec.ECPrivateKeySpec;
import?java.security.spec.ECPublicKeySpec;
import?java.security.spec.EllipticCurve;
import?java.util.Map;import?org.junit.Test;/***?*?@author?梁棟*?@version?1.0*?@since?1.0*/
public?class?ECCCoderTest?{@Testpublic?void?test()?throws?Exception?{String?inputStr?=?"abc";byte[]?data?=?inputStr.getBytes();Map<String,?Object>?keyMap?=?ECCCoder.initKey();String?publicKey?=?ECCCoder.getPublicKey(keyMap);String?privateKey?=?ECCCoder.getPrivateKey(keyMap);System.err.println("公鑰:?\n"?+?publicKey);System.err.println("私鑰：?\n"?+?privateKey);byte[]?encodedData?=?ECCCoder.encrypt(data,?publicKey);byte[]?decodedData?=?ECCCoder.decrypt(encodedData,?privateKey);String?outputStr?=?new?String(decodedData);System.err.println("加密前:?"?+?inputStr?+?"\n\r"?+?"解密后:?"?+?outputStr);assertEquals(inputStr,?outputStr);}
}
公鑰:?
MEAwEAYHKoZIzj0CAQYFK4EEAAEDLAAEAv4TwFN7vBGsqgfXk95ObV5clO7oAokHD7BdOP9YMh8u
gAU21TjM2qPZ私鑰：?
MDICAQAwEAYHKoZIzj0CAQYFK4EEAAEEGzAZAgEBBBTYJsR3BN7TFw7JHcAHFkwNmfil7w==加密前:?abc解密后:?abc
??? 本篇的主要內(nèi)容為Java證書體系的實現(xiàn)。?
keytool?-genkey?-validity?36000?-alias?www.zlex.org?-keyalg?RSA?-keystore?d:\zlex.keystore
輸入keystore密碼：
再次輸入新密碼:
您的名字與姓氏是什么？[Unknown]：??www.zlex.org
您的組織單位名稱是什么？[Unknown]：??zlex
您的組織名稱是什么？[Unknown]：??zlex
您所在的城市或區(qū)域名稱是什么？[Unknown]：??BJ
您所在的州或省份名稱是什么？[Unknown]：??BJ
該單位的兩字母國家代碼是什么[Unknown]：??CN
CN=www.zlex.org,?OU=zlex,?O=zlex,?L=BJ,?ST=BJ,?C=CN?正確嗎？[否]：??Y輸入<tomcat>的主密碼（如果和?keystore?密碼相同，按回車）：
再次輸入新密碼:
keytool?-export?-keystore?d:\zlex.keystore?-alias?www.zlex.org?-file?d:\zlex.cer?-rfc
輸入keystore密碼：
保存在文件中的認證?<d:\zlex.cer>
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;/***?證書組件*?*?@author?梁棟*?@version?1.0*?@since?1.0*/
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.getInstance(KEY_STORE);ks.load(is,?password.toCharArray());is.close();return?ks;}/***?私鑰加密*?*?@param?data*?@param?keyStorePath*?@param?alias*?@param?password*?@return*?@throws?Exception*/public?static?byte[]?encryptByPrivateKey(byte[]?data,?String?keyStorePath,String?alias,?String?password)?throws?Exception?{//?取得私鑰PrivateKey?privateKey?=?getPrivateKey(keyStorePath,?alias,?password);//?對數(shù)據(jù)加密Cipher?cipher?=?Cipher.getInstance(privateKey.getAlgorithm());cipher.init(Cipher.ENCRYPT_MODE,?privateKey);return?cipher.doFinal(data);}/***?私鑰解密*?*?@param?data*?@param?keyStorePath*?@param?alias*?@param?password*?@return*?@throws?Exception*/public?static?byte[]?decryptByPrivateKey(byte[]?data,?String?keyStorePath,String?alias,?String?password)?throws?Exception?{//?取得私鑰PrivateKey?privateKey?=?getPrivateKey(keyStorePath,?alias,?password);//?對數(shù)據(jù)加密Cipher?cipher?=?Cipher.getInstance(privateKey.getAlgorithm());cipher.init(Cipher.DECRYPT_MODE,?privateKey);return?cipher.doFinal(data);}/***?公鑰加密*?*?@param?data*?@param?certificatePath*?@return*?@throws?Exception*/public?static?byte[]?encryptByPublicKey(byte[]?data,?String?certificatePath)throws?Exception?{//?取得公鑰PublicKey?publicKey?=?getPublicKey(certificatePath);//?對數(shù)據(jù)加密Cipher?cipher?=?Cipher.getInstance(publicKey.getAlgorithm());cipher.init(Cipher.ENCRYPT_MODE,?publicKey);return?cipher.doFinal(data);}/***?公鑰解密*?*?@param?data*?@param?certificatePath*?@return*?@throws?Exception*/public?static?byte[]?decryptByPublicKey(byte[]?data,?String?certificatePath)throws?Exception?{//?取得公鑰PublicKey?publicKey?=?getPublicKey(certificatePath);//?對數(shù)據(jù)加密Cipher?cipher?=?Cipher.getInstance(publicKey.getAlgorithm());cipher.init(Cipher.DECRYPT_MODE,?publicKey);return?cipher.doFinal(data);}/***?驗證Certificate*?*?@param?certificatePath*?@return*/public?static?boolean?verifyCertificate(String?certificatePath)?{return?verifyCertificate(new?Date(),?certificatePath);}/***?驗證Certificate是否過期或無效*?*?@param?date*?@param?certificatePath*?@return*/public?static?boolean?verifyCertificate(Date?date,?String?certificatePath)?{boolean?status?=?true;try?{//?取得證書Certificate?certificate?=?getCertificate(certificatePath);//?驗證證書是否過期或無效status?=?verifyCertificate(date,?certificate);}?catch?(Exception?e)?{status?=?false;}return?status;}/***?驗證證書是否過期或無效*?*?@param?date*?@param?certificate*?@return*/private?static?boolean?verifyCertificate(Date?date,?Certificate?certificate)?{boolean?status?=?true;try?{X509Certificate?x509Certificate?=?(X509Certificate)?certificate;x509Certificate.checkValidity(date);}?catch?(Exception?e)?{status?=?false;}return?status;}/***?簽名*?*?@param?keyStorePath*?@param?alias*?@param?password*?*?@return*?@throws?Exception*/public?static?String?sign(byte[]?sign,?String?keyStorePath,?String?alias,String?password)?throws?Exception?{//?獲得證書X509Certificate?x509Certificate?=?(X509Certificate)?getCertificate(keyStorePath,?alias,?password);//?獲取私鑰KeyStore?ks?=?getKeyStore(keyStorePath,?password);//?取得私鑰PrivateKey?privateKey?=?(PrivateKey)?ks.getKey(alias,?password.toCharArray());//?構(gòu)建簽名Signature?signature?=?Signature.getInstance(x509Certificate.getSigAlgName());signature.initSign(privateKey);signature.update(sign);return?encryptBASE64(signature.sign());}/***?驗證簽名*?*?@param?data*?@param?sign*?@param?certificatePath*?@return*?@throws?Exception*/public?static?boolean?verify(byte[]?data,?String?sign,String?certificatePath)?throws?Exception?{//?獲得證書X509Certificate?x509Certificate?=?(X509Certificate)?getCertificate(certificatePath);//?獲得公鑰PublicKey?publicKey?=?x509Certificate.getPublicKey();//?構(gòu)建簽名Signature?signature?=?Signature.getInstance(x509Certificate.getSigAlgName());signature.initVerify(publicKey);signature.update(data);return?signature.verify(decryptBASE64(sign));}/***?驗證Certificate*?*?@param?keyStorePath*?@param?alias*?@param?password*?@return*/public?static?boolean?verifyCertificate(Date?date,?String?keyStorePath,String?alias,?String?password)?{boolean?status?=?true;try?{Certificate?certificate?=?getCertificate(keyStorePath,?alias,password);status?=?verifyCertificate(date,?certificate);}?catch?(Exception?e)?{status?=?false;}return?status;}/***?驗證Certificate*?*?@param?keyStorePath*?@param?alias*?@param?password*?@return*/public?static?boolean?verifyCertificate(String?keyStorePath,?String?alias,String?password)?{return?verifyCertificate(new?Date(),?keyStorePath,?alias,?password);}
}
import?static?org.junit.Assert.*;import?org.junit.Test;/***?*?@author?梁棟*?@version?1.0*?@since?1.0*/
public?class?CertificateCoderTest?{private?String?password?=?"123456";private?String?alias?=?"www.zlex.org";private?String?certificatePath?=?"d:/zlex.cer";private?String?keyStorePath?=?"d:/zlex.keystore";@Testpublic?void?test()?throws?Exception?{System.err.println("公鑰加密——私鑰解密");String?inputStr?=?"Ceritifcate";byte[]?data?=?inputStr.getBytes();byte[]?encrypt?=?CertificateCoder.encryptByPublicKey(data,certificatePath);byte[]?decrypt?=?CertificateCoder.decryptByPrivateKey(encrypt,keyStorePath,?alias,?password);String?outputStr?=?new?String(decrypt);System.err.println("加密前:?"?+?inputStr?+?"\n\r"?+?"解密后:?"?+?outputStr);//?驗證數(shù)據(jù)一致assertArrayEquals(data,?decrypt);//?驗證證書有效assertTrue(CertificateCoder.verifyCertificate(certificatePath));}@Testpublic?void?testSign()?throws?Exception?{System.err.println("私鑰加密——公鑰解密");String?inputStr?=?"sign";byte[]?data?=?inputStr.getBytes();byte[]?encodedData?=?CertificateCoder.encryptByPrivateKey(data,keyStorePath,?alias,?password);byte[]?decodedData?=?CertificateCoder.decryptByPublicKey(encodedData,certificatePath);String?outputStr?=?new?String(decodedData);System.err.println("加密前:?"?+?inputStr?+?"\n\r"?+?"解密后:?"?+?outputStr);assertEquals(inputStr,?outputStr);System.err.println("私鑰簽名——公鑰驗證簽名");//?產(chǎn)生簽名String?sign?=?CertificateCoder.sign(encodedData,?keyStorePath,?alias,password);System.err.println("簽名:\r"?+?sign);//?驗證簽名boolean?status?=?CertificateCoder.verify(encodedData,?sign,certificatePath);System.err.println("狀態(tài):\r"?+?status);assertTrue(status);}
}
公鑰加密——私鑰解密
加密前:?Ceritificate解密后:?Ceritificate私鑰加密——公鑰解密
加密前:?sign解密后:?sign
私鑰簽名——公鑰驗證簽名
簽名:
pqBn5m6PJlfOjH0A6U2o2mUmBsfgyEY1NWCbiyA/I5Gc3gaVNVIdj/zkGNZRqTjhf3+J9a9z9EI7
6F2eWYd7punHx5oh6hfNgcKbVb52EfItl4QEN+djbXiPynn07+Lbg1NOjULnpEd6ZhLP1YwrEAuM
OfvX0e7/wplxLbySaKQ=狀態(tài):
true
jarsigner?-storetype?jks?-keystore?zlex.keystore?-verbose?tools.jar?www.zlex.org
輸入密鑰庫的口令短語：正在更新：?META-INF/WWW_ZLEX.SF正在更新：?META-INF/WWW_ZLEX.RSA正在簽名：?org/zlex/security/Security.class正在簽名：?org/zlex/tool/Main$1.class正在簽名：?org/zlex/tool/Main$2.class正在簽名：?org/zlex/tool/Main.class警告：
簽名者證書將在六個月內(nèi)過期。
jarsigner?-verify?-verbose?-certs?tools.jar
?????????402?Sat?Jun?20?16:25:14?CST?2009?META-INF/MANIFEST.MF532?Sat?Jun?20?16:25:14?CST?2009?META-INF/WWW_ZLEX.SF889?Sat?Jun?20?16:25:14?CST?2009?META-INF/WWW_ZLEX.RSA
sm???????590?Wed?Dec?10?13:03:42?CST?2008?org/zlex/security/Security.classX.509,?CN=www.zlex.org,?OU=zlex,?O=zlex,?L=BJ,?ST=BJ,?C=CN[證書將在?09-9-18?下午3:27?到期]sm???????705?Tue?Dec?16?18:00:56?CST?2008?org/zlex/tool/Main$1.classX.509,?CN=www.zlex.org,?OU=zlex,?O=zlex,?L=BJ,?ST=BJ,?C=CN[證書將在?09-9-18?下午3:27?到期]sm???????779?Tue?Dec?16?18:00:56?CST?2008?org/zlex/tool/Main$2.classX.509,?CN=www.zlex.org,?OU=zlex,?O=zlex,?L=BJ,?ST=BJ,?C=CN[證書將在?09-9-18?下午3:27?到期]sm?????12672?Tue?Dec?16?18:00:56?CST?2008?org/zlex/tool/Main.classX.509,?CN=www.zlex.org,?OU=zlex,?O=zlex,?L=BJ,?ST=BJ,?C=CN[證書將在?09-9-18?下午3:27?到期]s?=?已驗證簽名m?=?在清單中列出條目k?=?在密鑰庫中至少找到了一個證書i?=?在身份作用域內(nèi)至少找到了一個證書jar?已驗證。警告：
此?jar?包含簽名者證書將在六個月內(nèi)過期的條目。
??? 在中，我們模擬了一個基于RSA非對稱加密網(wǎng)絡(luò)的安全通信。現(xiàn)在我們深度了解一下現(xiàn)有的安全網(wǎng)絡(luò)通信——SSL。?
keytool?-import?-alias?www.zlex.org?-file?d:/zlex.cer?-keystore?d:/zlex.keystore
輸入keystore密碼：
再次輸入新密碼:
所有者:CN=www.zlex.org,?OU=zlex,?O=zlex,?L=BJ,?ST=BJ,?C=CN
簽發(fā)人:CN=www.zlex.org,?OU=zlex,?O=zlex,?L=BJ,?ST=BJ,?C=CN
序列號:4a1e48df
有效期:?Thu?May?28?16:18:39?CST?2009?至Wed?Aug?26?16:18:39?CST?2009
證書指紋:MD5:19:CA:E6:36:E2:DF:AD:96:31:97:2F:A9:AD:FC:37:6ASHA1:49:88:30:59:29:45:F1:69:CA:97:A9:6D:8A:CF:08:D2:C3:D5:C0:C4簽名算法名稱:SHA1withRSA版本:?3
信任這個認證？?[否]：??y
認證已添加至keystore中
<ConnectorSSLEnabled="true"URIEncoding="UTF-8"clientAuth="false"keystoreFile="conf/zlex.keystore"keystorePass="123456"maxThreads="150"port="443"protocol="HTTP/1.1"scheme="https"secure="true"sslProtocol="TLS"?/>
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?javax.net.ssl.HttpsURLConnection;
import?javax.net.ssl.KeyManagerFactory;
import?javax.net.ssl.SSLContext;
import?javax.net.ssl.SSLSocketFactory;
import?javax.net.ssl.TrustManagerFactory;/***?證書組件*?*?@author?梁棟*?@version?1.0*?@since?1.0*/
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";public?static?final?String?SunX509?=?"SunX509";public?static?final?String?SSL?=?"SSL";/***?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.getInstance(KEY_STORE);ks.load(is,?password.toCharArray());is.close();return?ks;}/***?私鑰加密*?*?@param?data*?@param?keyStorePath*?@param?alias*?@param?password*?@return*?@throws?Exception*/public?static?byte[]?encryptByPrivateKey(byte[]?data,?String?keyStorePath,String?alias,?String?password)?throws?Exception?{//?取得私鑰PrivateKey?privateKey?=?getPrivateKey(keyStorePath,?alias,?password);//?對數(shù)據(jù)加密Cipher?cipher?=?Cipher.getInstance(privateKey.getAlgorithm());cipher.init(Cipher.ENCRYPT_MODE,?privateKey);return?cipher.doFinal(data);}/***?私鑰解密*?*?@param?data*?@param?keyStorePath*?@param?alias*?@param?password*?@return*?@throws?Exception*/public?static?byte[]?decryptByPrivateKey(byte[]?data,?String?keyStorePath,String?alias,?String?password)?throws?Exception?{//?取得私鑰PrivateKey?privateKey?=?getPrivateKey(keyStorePath,?alias,?password);//?對數(shù)據(jù)加密Cipher?cipher?=?Cipher.getInstance(privateKey.getAlgorithm());cipher.init(Cipher.DECRYPT_MODE,?privateKey);return?cipher.doFinal(data);}/***?公鑰加密*?*?@param?data*?@param?certificatePath*?@return*?@throws?Exception*/public?static?byte[]?encryptByPublicKey(byte[]?data,?String?certificatePath)throws?Exception?{//?取得公鑰PublicKey?publicKey?=?getPublicKey(certificatePath);//?對數(shù)據(jù)加密Cipher?cipher?=?Cipher.getInstance(publicKey.getAlgorithm());cipher.init(Cipher.ENCRYPT_MODE,?publicKey);return?cipher.doFinal(data);}/***?公鑰解密*?*?@param?data*?@param?certificatePath*?@return*?@throws?Exception*/public?static?byte[]?decryptByPublicKey(byte[]?data,?String?certificatePath)throws?Exception?{//?取得公鑰PublicKey?publicKey?=?getPublicKey(certificatePath);//?對數(shù)據(jù)加密Cipher?cipher?=?Cipher.getInstance(publicKey.getAlgorithm());cipher.init(Cipher.DECRYPT_MODE,?publicKey);return?cipher.doFinal(data);}/***?驗證Certificate*?*?@param?certificatePath*?@return*/public?static?boolean?verifyCertificate(String?certificatePath)?{return?verifyCertificate(new?Date(),?certificatePath);}/***?驗證Certificate是否過期或無效*?*?@param?date*?@param?certificatePath*?@return*/public?static?boolean?verifyCertificate(Date?date,?String?certificatePath)?{boolean?status?=?true;try?{//?取得證書Certificate?certificate?=?getCertificate(certificatePath);//?驗證證書是否過期或無效status?=?verifyCertificate(date,?certificate);}?catch?(Exception?e)?{status?=?false;}return?status;}/***?驗證證書是否過期或無效*?*?@param?date*?@param?certificate*?@return*/private?static?boolean?verifyCertificate(Date?date,?Certificate?certificate)?{boolean?status?=?true;try?{X509Certificate?x509Certificate?=?(X509Certificate)?certificate;x509Certificate.checkValidity(date);}?catch?(Exception?e)?{status?=?false;}return?status;}/***?簽名*?*?@param?keyStorePath*?@param?alias*?@param?password*?*?@return*?@throws?Exception*/public?static?String?sign(byte[]?sign,?String?keyStorePath,?String?alias,String?password)?throws?Exception?{//?獲得證書X509Certificate?x509Certificate?=?(X509Certificate)?getCertificate(keyStorePath,?alias,?password);//?獲取私鑰KeyStore?ks?=?getKeyStore(keyStorePath,?password);//?取得私鑰PrivateKey?privateKey?=?(PrivateKey)?ks.getKey(alias,?password.toCharArray());//?構(gòu)建簽名Signature?signature?=?Signature.getInstance(x509Certificate.getSigAlgName());signature.initSign(privateKey);signature.update(sign);return?encryptBASE64(signature.sign());}/***?驗證簽名*?*?@param?data*?@param?sign*?@param?certificatePath*?@return*?@throws?Exception*/public?static?boolean?verify(byte[]?data,?String?sign,String?certificatePath)?throws?Exception?{//?獲得證書X509Certificate?x509Certificate?=?(X509Certificate)?getCertificate(certificatePath);//?獲得公鑰PublicKey?publicKey?=?x509Certificate.getPublicKey();//?構(gòu)建簽名Signature?signature?=?Signature.getInstance(x509Certificate.getSigAlgName());signature.initVerify(publicKey);signature.update(data);return?signature.verify(decryptBASE64(sign));}/***?驗證Certificate*?*?@param?keyStorePath*?@param?alias*?@param?password*?@return*/public?static?boolean?verifyCertificate(Date?date,?String?keyStorePath,String?alias,?String?password)?{boolean?status?=?true;try?{Certificate?certificate?=?getCertificate(keyStorePath,?alias,password);status?=?verifyCertificate(date,?certificate);}?catch?(Exception?e)?{status?=?false;}return?status;}/***?驗證Certificate*?*?@param?keyStorePath*?@param?alias*?@param?password*?@return*/public?static?boolean?verifyCertificate(String?keyStorePath,?String?alias,String?password)?{return?verifyCertificate(new?Date(),?keyStorePath,?alias,?password);}/***?獲得SSLSocektFactory*?*?@param?password*????????????密碼*?@param?keyStorePath*????????????密鑰庫路徑*?*?@param?trustKeyStorePath*????????????信任庫路徑*?@return*?@throws?Exception*/private?static?SSLSocketFactory?getSSLSocketFactory(String?password,String?keyStorePath,?String?trustKeyStorePath)?throws?Exception?{//?初始化密鑰庫KeyManagerFactory?keyManagerFactory?=?KeyManagerFactory.getInstance(SunX509);KeyStore?keyStore?=?getKeyStore(keyStorePath,?password);keyManagerFactory.init(keyStore,?password.toCharArray());//?初始化信任庫TrustManagerFactory?trustManagerFactory?=?TrustManagerFactory.getInstance(SunX509);KeyStore?trustkeyStore?=?getKeyStore(trustKeyStorePath,?password);trustManagerFactory.init(trustkeyStore);//?初始化SSL上下文SSLContext?ctx?=?SSLContext.getInstance(SSL);ctx.init(keyManagerFactory.getKeyManagers(),?trustManagerFactory.getTrustManagers(),?null);SSLSocketFactory?sf?=?ctx.getSocketFactory();return?sf;}/***?為HttpsURLConnection配置SSLSocketFactory*?*?@param?conn*????????????HttpsURLConnection*?@param?password*????????????密碼*?@param?keyStorePath*????????????密鑰庫路徑*?*?@param?trustKeyStorePath*????????????信任庫路徑*?@throws?Exception*/public?static?void?configSSLSocketFactory(HttpsURLConnection?conn,String?password,?String?keyStorePath,?String?trustKeyStorePath)throws?Exception?{conn.setSSLSocketFactory(getSSLSocketFactory(password,?keyStorePath,trustKeyStorePath));}
}
import?static?org.junit.Assert.*;import?java.io.DataInputStream;
import?java.io.InputStream;
import?java.net.URL;import?javax.net.ssl.HttpsURLConnection;import?org.junit.Test;/***?*?@author?梁棟*?@version?1.0*?@since?1.0*/
public?class?CertificateCoderTest?{private?String?password?=?"123456";private?String?alias?=?"www.zlex.org";private?String?certificatePath?=?"d:/zlex.cer";private?String?keyStorePath?=?"d:/zlex.keystore";private?String?clientKeyStorePath?=?"d:/zlex-client.keystore";private?String?clientPassword?=?"654321";@Testpublic?void?test()?throws?Exception?{System.err.println("公鑰加密——私鑰解密");String?inputStr?=?"Ceritifcate";byte[]?data?=?inputStr.getBytes();byte[]?encrypt?=?CertificateCoder.encryptByPublicKey(data,certificatePath);byte[]?decrypt?=?CertificateCoder.decryptByPrivateKey(encrypt,keyStorePath,?alias,?password);String?outputStr?=?new?String(decrypt);System.err.println("加密前:?"?+?inputStr?+?"\n\r"?+?"解密后:?"?+?outputStr);//?驗證數(shù)據(jù)一致assertArrayEquals(data,?decrypt);//?驗證證書有效assertTrue(CertificateCoder.verifyCertificate(certificatePath));}@Testpublic?void?testSign()?throws?Exception?{System.err.println("私鑰加密——公鑰解密");String?inputStr?=?"sign";byte[]?data?=?inputStr.getBytes();byte[]?encodedData?=?CertificateCoder.encryptByPrivateKey(data,keyStorePath,?alias,?password);byte[]?decodedData?=?CertificateCoder.decryptByPublicKey(encodedData,certificatePath);String?outputStr?=?new?String(decodedData);System.err.println("加密前:?"?+?inputStr?+?"\n\r"?+?"解密后:?"?+?outputStr);assertEquals(inputStr,?outputStr);System.err.println("私鑰簽名——公鑰驗證簽名");//?產(chǎn)生簽名String?sign?=?CertificateCoder.sign(encodedData,?keyStorePath,?alias,password);System.err.println("簽名:\r"?+?sign);//?驗證簽名boolean?status?=?CertificateCoder.verify(encodedData,?sign,certificatePath);System.err.println("狀態(tài):\r"?+?status);assertTrue(status);}@Testpublic?void?testHttps()?throws?Exception?{URL?url?=?new?URL("https://www.zlex.org/examples/");HttpsURLConnection?conn?=?(HttpsURLConnection)?url.openConnection();conn.setDoInput(true);conn.setDoOutput(true);CertificateCoder.configSSLSocketFactory(conn,?clientPassword,clientKeyStorePath,?clientKeyStorePath);InputStream?is?=?conn.getInputStream();int?length?=?conn.getContentLength();DataInputStream?dis?=?new?DataInputStream(is);byte[]?data?=?new?byte[length];dis.readFully(data);dis.close();System.err.println(new?String(data));conn.disconnect();}
}
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??? 我們使用自簽名證書完成了認證。接下來，我們使用第三方CA簽名機構(gòu)完成證書簽名。?
keytool?-genkey?-validity?36000?-alias?www.zlex.org?-keyalg?RSA?-keystore?d:\zlex.keystore
輸入keystore密碼：
再次輸入新密碼:
您的名字與姓氏是什么？[Unknown]：??www.zlex.org
您的組織單位名稱是什么？[Unknown]：??zlex
您的組織名稱是什么？[Unknown]：??zlex
您所在的城市或區(qū)域名稱是什么？[Unknown]：??BJ
您所在的州或省份名稱是什么？[Unknown]：??BJ
該單位的兩字母國家代碼是什么[Unknown]：??CN
CN=www.zlex.org,?OU=zlex,?O=zlex,?L=BJ,?ST=BJ,?C=CN?正確嗎？[否]：??Y輸入<tomcat>的主密碼（如果和?keystore?密碼相同，按回車）：
再次輸入新密碼:
keytool?-certreq?-alias?www.zlex.org?-file?d:\zlex.csr?-keystore?d:\zlex.keystore?-v
你會獲得zlex.csr文件，可以用記事本打開，內(nèi)容如下格式：
-----BEGIN?NEW?CERTIFICATE?REQUEST-----
MIIBnDCCAQUCAQAwXDELMAkGA1UEBhMCQ04xCzAJBgNVBAgTAkJKMQswCQYDVQQHEwJCSjENMAsG
A1UEChMEemxleDENMAsGA1UECxMEemxleDEVMBMGA1UEAxMMd3d3LnpsZXgub3JnMIGfMA0GCSqG
SIb3DQEBAQUAA4GNADCBiQKBgQCR6DXU9Mp+mCKO7cv9JPsj0n1Ec/GpM09qvhpgX3FNad/ZWSDc
vU77YXZSoF9hQp3w1LC+eeKgd2MlVpXTvbVwBNVd2HiQPp37ic6BUUjSaX8LHtCl7l0BIEye9qQ2
j8G0kak7e8ZA0s7nb3Ymq/K8BV7v0MQIdhIc1bifK9ZDewIDAQABoAAwDQYJKoZIhvcNAQEFBQAD
gYEAMA1r2fbZPtNx37U9TRwadCH2TZZecwKJS/hskNm6ryPKIAp9APWwAyj8WJHRBz5SpZM4zmYO
oMCI8BcnY2A4JP+R7/SwXTdH/xcg7NVghd9A2SCgqMpF7KMfc5dE3iygdiPu+UhY200Dvpjx8gmJ
1UbH3+nqMUyCrZgURFslOUY=
-----END?NEW?CERTIFICATE?REQUEST-----
-----BEGIN?PKCS7-----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-----END?PKCS7-----
將其存儲為zlex.p7b?
keytool?-import?-trustcacerts?-alias?www.zlex.org?-file?d:\zlex.p7b?-keystore?d:\zlex.keystore?-v
輸入keystore密碼：回復(fù)中的最高級認證：所有者:CN=Thawte?Test?CA?Root,?OU=TEST?TEST?TEST,?O=Thawte?Certification,?ST=FORTESTING?PURPOSES?ONLY,?C=ZA
簽發(fā)人:CN=Thawte?Test?CA?Root,?OU=TEST?TEST?TEST,?O=Thawte?Certification,?ST=FORTESTING?PURPOSES?ONLY,?C=ZA
序列號:0
有效期:?Thu?Aug?01?08:00:00?CST?1996?至Fri?Jan?01?05:59:59?CST?2021
證書指紋:MD5:5E:E0:0E:1D:17:B7:CA:A5:7D:36:D6:02:DF:4D:26:A4SHA1:39:C6:9D:27:AF:DC:EB:47:D6:33:36:6A:B2:05:F1:47:A9:B4:DA:EA簽名算法名稱:MD5withRSA版本:?3擴展:#1:?ObjectId:?2.5.29.19?Criticality=true
BasicConstraints:[CA:truePathLen:2147483647
]...?是不可信的。?還是要安裝回復(fù)？?[否]：??Y
認證回復(fù)已安裝在?keystore中
[正在存儲?d:\zlex.keystore]
<ConnectorkeystoreFile="conf/zlex.keystore"keystorePass="123456"?truststoreFile="conf/zlex.keystore"????truststorePass="123456"?????SSLEnabled="true"URIEncoding="UTF-8"clientAuth="false" maxThreads="150"port="443"protocol="HTTP/1.1"scheme="https"secure="true"sslProtocol="TLS"?/>
import?static?org.junit.Assert.*;import?java.io.DataInputStream;
import?java.io.InputStream;
import?java.net.URL;import?javax.net.ssl.HttpsURLConnection;import?org.junit.Test;/***?*?@author?梁棟*?@version?1.0*?@since?1.0*/
public?class?CertificateCoderTest?{private?String?password?=?"123456";private?String?alias?=?"www.zlex.org";private?String?certificatePath?=?"d:/zlex.cer";private?String?keyStorePath?=?"d:/zlex.keystore";@Testpublic?void?test()?throws?Exception?{System.err.println("公鑰加密——私鑰解密");String?inputStr?=?"Ceritifcate";byte[]?data?=?inputStr.getBytes();byte[]?encrypt?=?CertificateCoder.encryptByPublicKey(data,certificatePath);byte[]?decrypt?=?CertificateCoder.decryptByPrivateKey(encrypt,keyStorePath,?alias,?password);String?outputStr?=?new?String(decrypt);System.err.println("加密前:?"?+?inputStr?+?"\n\r"?+?"解密后:?"?+?outputStr);//?驗證數(shù)據(jù)一致assertArrayEquals(data,?decrypt);//?驗證證書有效assertTrue(CertificateCoder.verifyCertificate(certificatePath));}@Testpublic?void?testSign()?throws?Exception?{System.err.println("私鑰加密——公鑰解密");String?inputStr?=?"sign";byte[]?data?=?inputStr.getBytes();byte[]?encodedData?=?CertificateCoder.encryptByPrivateKey(data,keyStorePath,?alias,?password);byte[]?decodedData?=?CertificateCoder.decryptByPublicKey(encodedData,certificatePath);String?outputStr?=?new?String(decodedData);System.err.println("加密前:?"?+?inputStr?+?"\n\r"?+?"解密后:?"?+?outputStr);assertEquals(inputStr,?outputStr);System.err.println("私鑰簽名——公鑰驗證簽名");//?產(chǎn)生簽名String?sign?=?CertificateCoder.sign(encodedData,?keyStorePath,?alias,password);System.err.println("簽名:\r"?+?sign);//?驗證簽名boolean?status?=?CertificateCoder.verify(encodedData,?sign,certificatePath);System.err.println("狀態(tài):\r"?+?status);assertTrue(status);}@Testpublic?void?testHttps()?throws?Exception?{URL?url?=?new?URL("https://www.zlex.org/examples/");HttpsURLConnection?conn?=?(HttpsURLConnection)?url.openConnection();conn.setDoInput(true);conn.setDoOutput(true);CertificateCoder.configSSLSocketFactory(conn,?password,?keyStorePath,keyStorePath);InputStream?is?=?conn.getInputStream();int?length?=?conn.getContentLength();DataInputStream?dis?=?new?DataInputStream(is);byte[]?data?=?new?byte[length];dis.readFully(data);dis.close();conn.disconnect();System.err.println(new?String(data));}
}
（原文地址：http://www.open-open.com/lib/view/open1397274257325.html）
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