JAVA工具类(16)---3des加解密工具类

package com.gcloud.common;import org.apache.poi.poifs.property.Child;import org.bouncycastle.jce.provider.BouncyCastleProvider;import javax.crypto.*;import javax.crypto.spec.IvParameterSpec;import javax.crypto.spec.SecretKeySpec;import java.io.BufferedReader;import java.io.File;import java.io.IOException;import java.io.InputStreamReader;import java.net.URL;import java.security.*;import java.security.spec.AlgorithmParameterSpec;/** * 三重数据加密算法工具类 * Created by charlin on 2017/9/11. */public class V3DESUtil {    //密钥存放位置    public static String FILENAME = "d:/3des.key";    // 1为加密，0为解密    private int isEncrypt = -1;    // 加密/解密密钥，长度为16byte或者24byte。    private String keyStr;    // 要加密/解密信息（解密时需为十六进制显示的字符串）    private String message;    public V3DESUtil() {    }    public V3DESUtil(int isEncrypt, String keyStr, String message) {        this.isEncrypt = isEncrypt;        this.keyStr = keyStr;        this.message = message;    }    //numStr = 12345678    public String V3DESChiper(String numStr) {        String result = null;        try {            Security.addProvider(new BouncyCastleProvider());            URL url = getClass().getResource(FILENAME);            File myFile = new File(FILENAME);            if (!myFile.exists()) {                return "Can't Find " + FILENAME;            }            try {                BufferedReader in = new BufferedReader(new InputStreamReader(url.openStream()));                while ((keyStr = in.readLine()) == null) {                    return "读取密钥失败！";                }                in.close();            } catch (IOException e) {                e.printStackTrace();            }            SecretKey key = new SecretKeySpec(keyStr.getBytes(), "DESede");            result = null;            byte[] textByte = null;            byte[] messageByte = null;            Cipher cipher = Cipher.getInstance("DESede/CBC/PKCS5Padding", "BC");            AlgorithmParameterSpec spec = new IvParameterSpec(numStr.getBytes());            if (isEncrypt == 1) {                messageByte = message.getBytes();                cipher.init(Cipher.ENCRYPT_MODE, key, spec);            } else if (isEncrypt == 0) {                messageByte = decodeHex(message);                cipher.init(Cipher.DECRYPT_MODE, key, spec);            } else {                return "加解密设置错误，请确认输入：1为加密；0为解密";            }            textByte = cipher.doFinal(messageByte);            if (isEncrypt == 1) {                result = encodeHex(textByte);            } else if (isEncrypt == 0) {                result = new String(textByte);            }        } catch (Exception e) {            e.printStackTrace();        }        return result;    }    public static final String encodeHex(byte bytes[]) {        StringBuffer buf = new StringBuffer(bytes.length * 2);        for (int i = 0; i < bytes.length; i++) {            if ((bytes[i] & 0xff) < 16)                buf.append("0");            buf.append(Long.toString(bytes[i] & 0xff, 16));        }        return buf.toString();    }    public static final byte[] decodeHex(String hex) {        char chars[] = hex.toCharArray();        byte bytes[] = new byte[chars.length / 2];        int byteCount = 0;        for (int i = 0; i < chars.length; i += 2) {            int newByte = 0;            newByte |= hexCharToByte(chars[i]);            newByte <<= 4;            newByte |= hexCharToByte(chars[i + 1]);            bytes[byteCount] = (byte) newByte;            byteCount++;        }        return bytes;    }    private static final byte hexCharToByte(char ch) {        switch (ch) {            case 48: // '0'                return 0;            case 49: // '1'                return 1;            case 50: // '2'                return 2;            case 51: // '3'                return 3;            case 52: // '4'                return 4;            case 53: // '5'                return 5;            case 54: // '6'                return 6;            case 55: // '7'                return 7;            case 56: // '8'                return 8;            case 57: // '9'                return 9;            case 97: // 'a'                return 10;            case 98: // 'b'                return 11;            case 99: // 'c'                return 12;            case 100: // 'd'                return 13;            case 101: // 'e'                return 14;            case 102: // 'f'                return 15;            case 58: // ':'            case 59: // ';'            case 60: // '<'            case 61: // '='            case 62: // '>'            case 63: // '?'            case 64: // '@'            case 65: // 'A'            case 66: // 'B'            case 67: // 'C'            case 68: // 'D'            case 69: // 'E'            case 70: // 'F'            case 71: // 'G'            case 72: // 'H'            case 73: // 'I'            case 74: // 'J'            case 75: // 'K'            case 76: // 'L'            case 77: // 'M'            case 78: // 'N'            case 79: // 'O'            case 80: // 'P'            case 81: // 'Q'            case 82: // 'R'            case 83: // 'S'            case 84: // 'T'            case 85: // 'U'            case 86: // 'V'            case 87: // 'W'            case 88: // 'X'            case 89: // 'Y'            case 90: // 'Z'            case 91: // '['            case 92: // '\\'            case 93: // ']'            case 94: // '^'            case 95: // '_'            case 96: // '`'            default:                return 0;        }    }    public static String getFILENAME() {        return FILENAME;    }    public int getIsEncrypt() {        return isEncrypt;    }    public void setIsEncrypt(int isEncrypt) {        this.isEncrypt = isEncrypt;    }    public String getKeyStr() {        return keyStr;    }    public void setKeyStr(String keyStr) {        this.keyStr = keyStr;    }    public String getMessage() {        return message;    }    public void setMessage(String message) {        this.message = message;    }    public static void main(String[] args) {        String key = "yycg12345678901234567890";        String oldstring = "test" + "#" + "test" + "#" + System.currentTimeMillis();        V3DESUtil tempDesEn = new V3DESUtil(1, oldstring, key);        String strTemp = tempDesEn.V3DESChiper("12345678");        System.out.println("strTemp=== " + strTemp);        V3DESUtil tempDe = new V3DESUtil(0, strTemp, key);        String strTempDe = tempDe.V3DESChiper("12345678");        System.out.println("strTempDe===" + strTempDe);    }}

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