加解密工具使用

1.加解密工具使用示例：

MD5使用示例：详见MD5
public static void main(String args[]) {
        MD5 m = new MD5();
        System.out.println(m.getMD5ofStr(m.getMD5ofStr("a")));
        if (Array.getLength(args) == 0) { // 如果没有参数，执行标准的Test Suite
            System.out.println("MD5 Test suite:");
            System.out.println("MD5(\"\"):" + m.getMD5ofStr(""));
            System.out.println("MD5(\"a\"):" + m.getMD5ofStr("a"));
            System.out.println("MD5(\"abc\"):" + m.getMD5ofStr("abc"));
            System.out.println("MD5(\"message digest\"):" + m.getMD5ofStr("message digest"));
            System.out.println("MD5(\"abcdefghijklmnopqrstuvwxyz\"):" + m.getMD5ofStr("abcdefghijklmnopqrstuvwxyz"));
            System.out.println("MD5(\"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789\"):"
                    + m.getMD5ofStr("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"));
        } else
            System.out.println("MD5(" + args[0] + ")=" + m.getMD5ofStr(args[0]));

    }


SHA1使用示例：详见SHA1Utils
public static void main(String[] args) throws Exception {  
        String key = "123";  
        System.out.println(SHA1Utils.encryptSHA(key));  
 }  

BASE64编码图片示例：详见Base64Image
public static void main(String[] args) {
        String imgStr = Base64Image.imageToBase64("G:\\img.jpg");
        System.out.println(imgStr);
        base64ToImage(imgStr, "G:\\img1.jpg");
    }


DES加解密使用示例: 详见DESUtils
public static void main(String[] args) throws Exception {
        String source = "amigoxie";
        System.out.println("原文: " + source);
        String key = "A1B2C3D4E5F60708";
        String encryptData = encrypt(source, key);
        System.out.println("加密后: " + encryptData);
        String decryptData = decrypt(encryptData, key);
        System.out.println("解密后: " + decryptData);
    }

 DES3加解密使用示例: 详见DES3Utils
 public static void main(String[] args) throws Exception {
        byte[] key = "6C4E60E55552386C759569836DC0F83869836DC0F838C0F7".getBytes();
        byte[] keyiv = { 1, 2, 3, 4, 5, 6, 7, 8 };
        byte[] data = "amigoxie".getBytes("UTF-8");
        System.out.println("data.length=" + data.length);
        System.out.println("CBC加密解密");
        byte[] str5 = des3EncodeCBC(key, keyiv, data);
        System.out.println(new sun.misc.BASE64Encoder().encode(str5));

        byte[] str6 = des3DecodeCBC(key, keyiv, str5);
        System.out.println(new String(str6, "UTF-8"));
    }

  RSA加解密使用示例：详见RSAUtils 
  public static void main(String[] args) throws Exception {  
        HashMap<String, Object> map = RSAUtils.getKeys();  
        //生成公钥和私钥  
        RSAPublicKey publicKey = (RSAPublicKey) map.get("public");  
        RSAPrivateKey privateKey = (RSAPrivateKey) map.get("private");  

        //模  
        String modulus = publicKey.getModulus().toString();  
        //公钥指数  
        String public_exponent = publicKey.getPublicExponent().toString();  
        //私钥指数  
        String private_exponent = privateKey.getPrivateExponent().toString();  
        //明文  
        String ming = "123456789";  
        //使用模和指数生成公钥和私钥  
        RSAPublicKey pubKey = RSAUtils.getPublicKey(modulus, public_exponent);  
        RSAPrivateKey priKey = RSAUtils.getPrivateKey(modulus, private_exponent);
        System.out.println("加密前的明文:"+ming);
        //加密后的密文  
        String mi = RSAUtils.encryptByPublicKey(ming, pubKey);  
        System.out.println("加密后的密文:"+mi);  
        //解密后的明文  
        ming = RSAUtils.decryptByPrivateKey(mi, priKey);  
        System.out.println("解密后的明文:"+ming);  
    }