Java内容重新整理删除过期的东西

2026-02-03 18:44:19 +08:00 · 2025-09-14 03:49:42 -04:00
parent 9b8524ff80
commit 885b795e45
413 changed files with 643 additions and 1340 deletions
--- a/Java/JavaDemo/codedemo/encrypt/AES.java
+++ b/Java/JavaDemo/codedemo/encrypt/AES.java
@@ -0,0 +1,54 @@
+package cn.aofeng.demo.encrypt;
+
+import static cn.aofeng.demo.util.LogUtil.log;
+
+import java.io.UnsupportedEncodingException;
+import java.security.InvalidAlgorithmParameterException;
+import java.security.InvalidKeyException;
+import java.security.NoSuchAlgorithmException;
+
+import javax.crypto.BadPaddingException;
+import javax.crypto.IllegalBlockSizeException;
+import javax.crypto.NoSuchPaddingException;
+import javax.crypto.SecretKey;
+
+import org.apache.commons.codec.binary.Base64;
+
+/**
+ * AES加密与解密。
+ * 
+ * @author <a href="mailto:aofengblog@163.com">聂勇</a>
+ */
+public class AES extends EncryptAndDecrypt {
+
+    public final String encryptType = "AES/CBC/PKCS5Padding";
+    public final String algorithmParam = "abcdefgh12345678";
+    public final String key = "abcdefgh_1234567";
+
+    public void execute(String data) throws InvalidKeyException,
+            IllegalBlockSizeException, BadPaddingException,
+            UnsupportedEncodingException, NoSuchAlgorithmException,
+            NoSuchPaddingException, InvalidAlgorithmParameterException {
+        SecretKey secretKey = createSecretKey("AES", key);
+        byte[] secretData = encrypt(encryptType, secretKey, data,
+                algorithmParam);
+        log("使用%s加密后的数据：", encryptType);
+        log(Base64.encodeBase64String(secretData));
+
+        String srcStr = decrypt(encryptType, secretKey, secretData,
+                algorithmParam);
+        log("解密后的数据：\n%s", srcStr);
+    }
+
+    public static void main(String[] args) throws UnsupportedEncodingException,
+            InvalidKeyException, IllegalBlockSizeException,
+            BadPaddingException, NoSuchAlgorithmException,
+            NoSuchPaddingException, InvalidAlgorithmParameterException {
+        String data = "炎黄，汉字，english,do it,abcdefghijklmnopqrstuvwxyz,0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ, ~!@#$%^&*()_+=-";
+        log("待加密的数据：\n%s", data);
+
+        AES aes = new AES();
+        aes.execute(data);
+    }
+
+}
--- a/Java/JavaDemo/codedemo/encrypt/Blowfish.java
+++ b/Java/JavaDemo/codedemo/encrypt/Blowfish.java
@@ -0,0 +1,51 @@
+package cn.aofeng.demo.encrypt;
+
+import static cn.aofeng.demo.util.LogUtil.log;
+
+import java.io.UnsupportedEncodingException;
+import java.security.InvalidAlgorithmParameterException;
+import java.security.InvalidKeyException;
+import java.security.NoSuchAlgorithmException;
+
+import javax.crypto.BadPaddingException;
+import javax.crypto.IllegalBlockSizeException;
+import javax.crypto.NoSuchPaddingException;
+import javax.crypto.SecretKey;
+
+import org.apache.commons.codec.binary.Base64;
+
+/**
+ * Blowfish加密解密。
+ * 
+ * @author <a href="mailto:aofengblog@163.com">聂勇</a>
+ */
+public class Blowfish extends EncryptAndDecrypt {
+
+    public final String encryptType = "Blowfish";
+    public final String key = "abcdefgh_1234567";
+
+    public void execute(String data) throws InvalidKeyException,
+            IllegalBlockSizeException, BadPaddingException,
+            UnsupportedEncodingException, NoSuchAlgorithmException,
+            NoSuchPaddingException, InvalidAlgorithmParameterException {
+        SecretKey secretKey = createSecretKey(encryptType, key);
+        byte[] secretData = encrypt(encryptType, secretKey, data);
+        log("使用%s加密后的数据：", encryptType);
+        log(Base64.encodeBase64String(secretData));
+
+        String srcStr = decrypt(encryptType, secretKey, secretData);
+        log("解密后的数据：\n%s", srcStr);
+    }
+
+    public static void main(String[] args) throws UnsupportedEncodingException,
+            InvalidKeyException, IllegalBlockSizeException,
+            BadPaddingException, NoSuchAlgorithmException,
+            NoSuchPaddingException, InvalidAlgorithmParameterException {
+        String data = "炎黄，汉字，english,do it,abcdefghijklmnopqrstuvwxyz,0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ, ~!@#$%^&*()_+=-";
+        log("待加密的数据：\n%s", data);
+
+        Blowfish bf = new Blowfish();
+        bf.execute(data);
+    }
+
+}
--- a/Java/JavaDemo/codedemo/encrypt/EncryptAndDecrypt.java
+++ b/Java/JavaDemo/codedemo/encrypt/EncryptAndDecrypt.java
@@ -0,0 +1,125 @@
+package cn.aofeng.demo.encrypt;
+
+import java.io.UnsupportedEncodingException;
+import java.security.InvalidAlgorithmParameterException;
+import java.security.InvalidKeyException;
+import java.security.NoSuchAlgorithmException;
+
+import javax.crypto.BadPaddingException;
+import javax.crypto.Cipher;
+import javax.crypto.IllegalBlockSizeException;
+import javax.crypto.NoSuchPaddingException;
+import javax.crypto.SecretKey;
+import javax.crypto.spec.IvParameterSpec;
+import javax.crypto.spec.SecretKeySpec;
+
+/**
+ * 加密与解密。
+ * 
+ * @author <a href="mailto:aofengblog@163.com">聂勇</a>
+ */
+public class EncryptAndDecrypt {
+
+    public final static String CHARSET = "utf8";
+
+    /**
+     * 创建安全密钥。
+     * 
+     * @param encryptType
+     *            加密方式，如：AES，Blowfish。详情查看<a href="https://docs.oracle.com/javase/7/docs/technotes/guides/security/StandardNames.html#Cipher">Java Cryptography Architecture Standard Algorithm Name Documentation</a>
+     * @param keyStr
+     *            密钥明文
+     * @return 安全密钥
+     * @throws UnsupportedEncodingException
+     *             不支持指定的字符集编码
+     */
+    public SecretKey createSecretKey(String encryptType, String keyStr)
+            throws UnsupportedEncodingException {
+        byte[] secretKeyData = keyStr.getBytes(CHARSET);
+        SecretKeySpec sks = new SecretKeySpec(secretKeyData, encryptType);
+
+        return sks;
+    }
+
+    /**
+     * 加密数据。
+     * 
+     * @param encryptType 加密方式，如：AES，Blowfish。详情查看<a href="https://docs.oracle.com/javase/7/docs/technotes/guides/security/StandardNames.html#Cipher">Java Cryptography Architecture Standard Algorithm Name Documentation</a>
+     * @param secretKey 密钥
+     * @param srcData 待加密的源数据
+     * @return 加密后的二进制数据（字节数组）
+     * @see #encrypt(String, SecretKey, String, String)
+     */
+    public byte[] encrypt(String encryptType, SecretKey secretKey,
+            String srcData) throws InvalidKeyException,
+            IllegalBlockSizeException, BadPaddingException,
+            UnsupportedEncodingException, NoSuchAlgorithmException,
+            NoSuchPaddingException, InvalidAlgorithmParameterException {
+        return encrypt(encryptType, secretKey, srcData, null);
+    }
+
+    /**
+     * 加密数据。
+     * 
+     * @param encryptType 加密类型，如：AES/CBC/PKCS5Padding
+     * @param secretKey 密钥
+     * @param srcData 待加密的源数据
+     * @param algorithmParam 某些加密算法的附加参数
+     * @return 加密后的二进制数据（字节数组）
+     */
+    public byte[] encrypt(String encryptType, SecretKey secretKey,
+            String srcData, String algorithmParam) throws InvalidKeyException,
+            IllegalBlockSizeException, BadPaddingException,
+            UnsupportedEncodingException, NoSuchAlgorithmException,
+            NoSuchPaddingException, InvalidAlgorithmParameterException {
+        Cipher encrpyt = Cipher.getInstance(encryptType);
+        if (null == algorithmParam) {
+            encrpyt.init(Cipher.ENCRYPT_MODE, secretKey);
+        } else {
+            IvParameterSpec iv = new IvParameterSpec(
+                    algorithmParam.getBytes(CHARSET));
+            encrpyt.init(Cipher.ENCRYPT_MODE, secretKey, iv);
+        }
+        byte[] secretData = encrpyt.doFinal(srcData.getBytes(CHARSET));
+
+        return secretData;
+    }
+
+    /**
+     * 解密数据。
+     * 
+     * @param decryptType 解密方式，如：AES，Blowfish。详情查看<a href="https://docs.oracle.com/javase/7/docs/technotes/guides/security/StandardNames.html#Cipher">Java Cryptography Architecture Standard Algorithm Name Documentation</a>
+     * @param secretKey 密钥
+     * @param secretData 待解密的数据
+     * @return 解密后的数据
+     * @see #decrypt(String, SecretKey, byte[], String)
+     */
+    public String decrypt(String decryptType, SecretKey secretKey,
+            byte[] secretData) throws InvalidKeyException,
+            IllegalBlockSizeException, BadPaddingException,
+            UnsupportedEncodingException, NoSuchAlgorithmException,
+            NoSuchPaddingException, InvalidAlgorithmParameterException {
+        return decrypt(decryptType, secretKey, secretData, null);
+    }
+
+    public String decrypt(String decryptType, SecretKey secretKey,
+            byte[] secretData, String algorithmParam)
+            throws InvalidKeyException, IllegalBlockSizeException,
+            BadPaddingException, UnsupportedEncodingException,
+            NoSuchAlgorithmException, NoSuchPaddingException,
+            InvalidAlgorithmParameterException {
+        Cipher decrypt = Cipher.getInstance(decryptType);
+        if (null == algorithmParam) {
+            decrypt.init(Cipher.DECRYPT_MODE, secretKey);
+        } else {
+            IvParameterSpec iv = new IvParameterSpec(
+                    algorithmParam.getBytes(CHARSET));
+            decrypt.init(Cipher.DECRYPT_MODE, secretKey, iv);
+        }
+        byte[] srcData = decrypt.doFinal(secretData);
+        String srcStr = new String(srcData, CHARSET);
+
+        return srcStr;
+    }
+
+}
--- a/Java/JavaDemo/codedemo/encrypt/HmacSha1.java
+++ b/Java/JavaDemo/codedemo/encrypt/HmacSha1.java
@@ -0,0 +1,53 @@
+package cn.aofeng.demo.encrypt;
+
+import static cn.aofeng.demo.util.LogUtil.log;
+
+import java.io.UnsupportedEncodingException;
+import java.security.InvalidAlgorithmParameterException;
+import java.security.InvalidKeyException;
+import java.security.NoSuchAlgorithmException;
+
+import javax.crypto.BadPaddingException;
+import javax.crypto.IllegalBlockSizeException;
+import javax.crypto.Mac;
+import javax.crypto.NoSuchPaddingException;
+import javax.crypto.SecretKey;
+
+import org.apache.commons.codec.binary.Base64;
+
+/**
+ * HMAC-SHA1签名算法。
+ * 
+ * @author <a href="mailto:aofengblog@163.com">聂勇</a>
+ */
+public class HmacSha1 {
+
+    public final String encryptType = "HmacSHA1";
+    public final String key = "abcdefgh_1234567";
+    
+    public void execute(String data) throws UnsupportedEncodingException, 
+            NoSuchAlgorithmException, InvalidKeyException {
+        EncryptAndDecrypt ead = new EncryptAndDecrypt();
+        
+        byte[] srcData = data.getBytes(EncryptAndDecrypt.CHARSET);
+        SecretKey secretKey = ead.createSecretKey(encryptType, key);   // 生成密钥对象
+        Mac mac = Mac.getInstance(encryptType);
+        mac.init(secretKey);
+        byte[] result = mac.doFinal(srcData);  
+        
+        log("使用%s签名后的数据：", encryptType);
+        log(Base64.encodeBase64String(result));
+    }
+    
+    public static void main(String[] args) throws InvalidKeyException, 
+            UnsupportedEncodingException, IllegalBlockSizeException, 
+            BadPaddingException, NoSuchAlgorithmException, 
+            NoSuchPaddingException, InvalidAlgorithmParameterException {
+        String data = "炎黄，汉字，english,do it,abcdefghijklmnopqrstuvwxyz,0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ, ~!@#$%^&*()_+=-";
+        log("待签名的数据：\n%s", data);
+
+        HmacSha1 hs = new HmacSha1();
+        hs.execute(data);
+    }
+
+}
--- a/Java/JavaDemo/codedemo/encrypt/PerformanceCompare.java
+++ b/Java/JavaDemo/codedemo/encrypt/PerformanceCompare.java
@@ -0,0 +1,70 @@
+package cn.aofeng.demo.encrypt;
+
+import static cn.aofeng.demo.util.LogUtil.log;
+
+import java.io.UnsupportedEncodingException;
+import java.security.InvalidAlgorithmParameterException;
+import java.security.InvalidKeyException;
+import java.security.NoSuchAlgorithmException;
+
+import javax.crypto.BadPaddingException;
+import javax.crypto.IllegalBlockSizeException;
+import javax.crypto.NoSuchPaddingException;
+import javax.crypto.SecretKey;
+
+/**
+ * 加密解密性能比较。
+ * 
+ * @author <a href="mailto:nieyong@ucweb.com">聂勇</a>
+ */
+public class PerformanceCompare extends EncryptAndDecrypt {
+
+    public void blowfishPerformence(String data)
+            throws UnsupportedEncodingException, InvalidKeyException,
+            IllegalBlockSizeException, BadPaddingException,
+            NoSuchAlgorithmException, NoSuchPaddingException,
+            InvalidAlgorithmParameterException {
+        Blowfish bf = new Blowfish();
+        SecretKey secretKey = createSecretKey(bf.encryptType, bf.key);
+        long startTime = System.currentTimeMillis();
+        for (int j = 0; j < 100000; j++) {
+            bf.encrypt(bf.encryptType, secretKey, data+j);
+        }
+        long endTime = System.currentTimeMillis();
+        long usedTime = endTime - startTime;
+        log("使用%s进行%d次加密消耗时间%d毫秒", bf.encryptType, 100000, usedTime);
+    }
+
+    public void aesPerformence(String data)
+            throws UnsupportedEncodingException, InvalidKeyException,
+            IllegalBlockSizeException, BadPaddingException,
+            NoSuchAlgorithmException, NoSuchPaddingException,
+            InvalidAlgorithmParameterException {
+        AES aes = new AES();
+        SecretKey secretKey = createSecretKey("AES", aes.key);
+        long startTime = System.currentTimeMillis();
+        for (int j = 0; j < 100000; j++) {
+            aes.encrypt(aes.encryptType, secretKey, data+j,
+                    aes.algorithmParam);
+        }
+        long endTime = System.currentTimeMillis();
+        long usedTime = endTime - startTime;
+        log("使用%s进行%d次加密消耗时间%d毫秒", aes.encryptType, 100000, usedTime);
+    }
+
+    public static void main(String[] args) throws InvalidKeyException,
+            UnsupportedEncodingException, IllegalBlockSizeException,
+            BadPaddingException, NoSuchAlgorithmException,
+            NoSuchPaddingException, InvalidAlgorithmParameterException {
+        String data = "炎黄，汉字，english,do it,abcdefghijklmnopqrstuvwxyz,0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ, ~!@#$%^&*()_+=-";
+        log("待加密的数据：\n%s", data);
+
+        PerformanceCompare pc = new PerformanceCompare();
+        // AES
+        pc.aesPerformence(data);
+
+        // Blowfish
+        pc.blowfishPerformence(data);
+    }
+
+}