Java对字符串进行加密解密的工具类

import java.io.IOException;import java.io.UnsupportedEncodingException;import java.security.MessageDigest;import java.security.PrivateKey;import java.security.PublicKey;import java.security.Signature;import javax.crypto.Cipher;import org.apache.commons.codec.binary.Base64;import org.bouncycastle.crypto.digests.SM3Digest;/** * @Author  2285841929 * @ClassName SecureUtil * @Description acpsdk安全算法工具类 * @date 2017-7-22 下午4:08:32 * */public class SecureUtil {/*** 算法常量： SHA1*/private static final String ALGORITHM_SHA1 = "SHA-1";/*** 算法常量： SHA256*/private static final String ALGORITHM_SHA256 = "SHA-256";/*** 算法常量：SHA1withRSA*/private static final String BC_PROV_ALGORITHM_SHA1RSA = "SHA1withRSA";/*** 算法常量：SHA256withRSA*/private static final String BC_PROV_ALGORITHM_SHA256RSA = "SHA256withRSA";/*** sm3计算后进行16进制转换* * @param data*            待计算的数据* @param encoding*            编码* @return 计算结果*/public static String sm3X16Str(String data, String encoding) {byte[] bytes = sm3(data, encoding);StringBuilder sm3StrBuff = new StringBuilder();for (int i = 0; i < bytes.length; i++) {if (Integer.toHexString(0xFF & bytes[i]).length() == 1) {sm3StrBuff.append("0").append(Integer.toHexString(0xFF & bytes[i]));} else {sm3StrBuff.append(Integer.toHexString(0xFF & bytes[i]));}}return sm3StrBuff.toString();}/*** sha1计算后进行16进制转换* * @param data*            待计算的数据* @param encoding*            编码* @return 计算结果*/public static byte[] sha1X16(String data, String encoding) {byte[] bytes = sha1(data, encoding);StringBuilder sha1StrBuff = new StringBuilder();for (int i = 0; i < bytes.length; i++) {if (Integer.toHexString(0xFF & bytes[i]).length() == 1) {sha1StrBuff.append("0").append(Integer.toHexString(0xFF & bytes[i]));} else {sha1StrBuff.append(Integer.toHexString(0xFF & bytes[i]));}}try {return sha1StrBuff.toString().getBytes(encoding);} catch (UnsupportedEncodingException e) {LogUtil.writeErrorLog(e.getMessage(), e);return null;}}/*** sha256计算后进行16进制转换* * @param data*            待计算的数据* @param encoding*            编码* @return 计算结果*/public static String sha256X16Str(String data, String encoding) {byte[] bytes = sha256(data, encoding);StringBuilder sha256StrBuff = new StringBuilder();for (int i = 0; i < bytes.length; i++) {if (Integer.toHexString(0xFF & bytes[i]).length() == 1) {sha256StrBuff.append("0").append(Integer.toHexString(0xFF & bytes[i]));} else {sha256StrBuff.append(Integer.toHexString(0xFF & bytes[i]));}}return sha256StrBuff.toString();}/*** sha256计算后进行16进制转换* * @param data*            待计算的数据* @param encoding*            编码* @return 计算结果*/public static byte[] sha256X16(String data, String encoding) {byte[] bytes = sha256(data, encoding);StringBuilder sha256StrBuff = new StringBuilder();for (int i = 0; i < bytes.length; i++) {if (Integer.toHexString(0xFF & bytes[i]).length() == 1) {sha256StrBuff.append("0").append(Integer.toHexString(0xFF & bytes[i]));} else {sha256StrBuff.append(Integer.toHexString(0xFF & bytes[i]));}}try {return sha256StrBuff.toString().getBytes(encoding);} catch (UnsupportedEncodingException e) {LogUtil.writeErrorLog(e.getMessage(), e);return null;}}/*** sha1计算.* * @param datas*            待计算的数据* @return 计算结果*/private static byte[] sha1(byte[] data) {MessageDigest md = null;try {md = MessageDigest.getInstance(ALGORITHM_SHA1);md.reset();md.update(data);return md.digest();} catch (Exception e) {LogUtil.writeErrorLog("SHA1计算失败", e);return null;}}/*** sha256计算.* * @param datas*            待计算的数据* @return 计算结果*/private static byte[] sha256(byte[] data) {MessageDigest md = null;try {md = MessageDigest.getInstance(ALGORITHM_SHA256);md.reset();md.update(data);return md.digest();} catch (Exception e) {LogUtil.writeErrorLog("SHA256计算失败", e);return null;}}/*** SM3计算.* * @param datas*            待计算的数据* @return 计算结果*/private static byte[] sm3(byte[] data) {SM3Digest sm3 = new SM3Digest();sm3.update(data, 0, data.length);byte[] result = new byte[sm3.getDigestSize()];sm3.doFinal(result, 0);return result;}/*** sha1计算* * @param datas*            待计算的数据* @param encoding*            字符集编码* @return*/private static byte[] sha1(String datas, String encoding) {try {return sha1(datas.getBytes(encoding));} catch (UnsupportedEncodingException e) {LogUtil.writeErrorLog("SHA1计算失败", e);return null;}}/*** sha256计算* * @param datas*            待计算的数据* @param encoding*            字符集编码* @return*/private static byte[] sha256(String datas, String encoding) {try {return sha256(datas.getBytes(encoding));} catch (UnsupportedEncodingException e) {LogUtil.writeErrorLog("SHA256计算失败", e);return null;}}/*** sm3计算* * @param datas*            待计算的数据* @param encoding*            字符集编码* @return*/private static byte[] sm3(String datas, String encoding) {try {return sm3(datas.getBytes(encoding));} catch (UnsupportedEncodingException e) {LogUtil.writeErrorLog("SM3计算失败", e);return null;}}/*** * @param privateKey* @param data* @return* @throws Exception*/public static byte[] signBySoft(PrivateKey privateKey, byte[] data)throws Exception {byte[] result = null;Signature st = Signature.getInstance(BC_PROV_ALGORITHM_SHA1RSA, "BC");st.initSign(privateKey);st.update(data);result = st.sign();return result;}/*** @param privateKey* @param data* @return* @throws Exception*/public static byte[] signBySoft256(PrivateKey privateKey, byte[] data)throws Exception {byte[] result = null;Signature st = Signature.getInstance(BC_PROV_ALGORITHM_SHA256RSA, "BC");st.initSign(privateKey);st.update(data);result = st.sign();return result;}public static boolean validateSignBySoft(PublicKey publicKey,byte[] signData, byte[] srcData) throws Exception {Signature st = Signature.getInstance(BC_PROV_ALGORITHM_SHA1RSA, "BC");st.initVerify(publicKey);st.update(srcData);return st.verify(signData);}public static boolean validateSignBySoft256(PublicKey publicKey,byte[] signData, byte[] srcData) throws Exception {Signature st = Signature.getInstance(BC_PROV_ALGORITHM_SHA256RSA, "BC");st.initVerify(publicKey);st.update(srcData);return st.verify(signData);}/*** 对数据通过公钥进行加密，并进行base64计算* * @param dataString*            待处理数据* @param encoding*            字符编码* @param key*            公钥* @return*/public static String encryptData(String dataString, String encoding,PublicKey key) {/** 使用公钥对密码加密 **/byte[] data = null;try {data = encryptData(key, dataString.getBytes(encoding));return new String(SecureUtil.base64Encode(data), encoding);} catch (Exception e) {LogUtil.writeErrorLog(e.getMessage(), e);return "";}}/*** 对数据通过公钥进行加密，并进行base64计算* * @param dataString*            待处理数据* @param encoding*            字符编码* @param key*            公钥* @return*/public static String encryptPin(String accNo, String pin, String encoding,PublicKey key) {/** 使用公钥对密码加密 **/byte[] data = null;try {data = pin2PinBlockWithCardNO(pin, accNo);data = encryptData(key, data);return new String(SecureUtil.base64Encode(data), encoding);} catch (Exception e) {LogUtil.writeErrorLog(e.getMessage(), e);return "";}}/*** 通过私钥解密* * @param dataString*            base64过的数据* @param encoding*            编码* @param key*            私钥* @return 解密后的数据*/public static String decryptData(String dataString, String encoding,PrivateKey key) {byte[] data = null;try {data = SecureUtil.base64Decode(dataString.getBytes(encoding));data = decryptData(key, data);return new String(data, encoding);} catch (Exception e) {LogUtil.writeErrorLog(e.getMessage(), e);return "";}}/*** BASE64解码* * @param inputByte*            待解码数据* @return 解码后的数据* @throws IOException*/public static byte[] base64Decode(byte[] inputByte) throws IOException {return Base64.decodeBase64(inputByte);}/*** BASE64编码* * @param inputByte*            待编码数据* @return 解码后的数据* @throws IOException*/public static byte[] base64Encode(byte[] inputByte) throws IOException {return Base64.encodeBase64(inputByte);}/*** 加密除pin之外的其他信息* * @param publicKey* @param plainData* @return* @throws Exception*/private static byte[] encryptData(PublicKey publicKey, byte[] plainData)throws Exception {try {Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding","BC");cipher.init(Cipher.ENCRYPT_MODE, publicKey);return cipher.doFinal(plainData);} catch (Exception e) {throw new Exception(e.getMessage());}}/*** @param privateKey* @param cryptPin* @return* @throws Exception*/private static byte[] decryptData(PrivateKey privateKey, byte[] data)throws Exception {try {Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding","BC");cipher.init(Cipher.DECRYPT_MODE, privateKey);return cipher.doFinal(data);} catch (Exception e) {LogUtil.writeErrorLog("解密失败", e);}return null;}/*** * @param aPin* @return*/private static byte[] pin2PinBlock(String aPin) {int tTemp = 1;int tPinLen = aPin.length();byte[] tByte = new byte[8];try {/******************************************************************** if (tPinLen > 9) { tByte[0] = (byte) Integer.parseInt(new* Integer(tPinLen) .toString(), 16); } else { tByte[0] = (byte)* Integer.parseInt(new Integer(tPinLen) .toString(), 10); }******************************************************************/// tByte[0] = (byte) Integer.parseInt(new Integer(tPinLen).toString(),// 10);tByte[0] = (byte) Integer.parseInt(Integer.toString(tPinLen), 10);if (tPinLen % 2 == 0) {for (int i = 0; i < tPinLen;) {String a = aPin.substring(i, i + 2);tByte[tTemp] = (byte) Integer.parseInt(a, 16);if (i == (tPinLen - 2)) {if (tTemp < 7) {for (int x = (tTemp + 1); x < 8; x++) {tByte[x] = (byte) 0xff;}}}tTemp++;i = i + 2;}} else {for (int i = 0; i < tPinLen - 1;) {String a;a = aPin.substring(i, i + 2);tByte[tTemp] = (byte) Integer.parseInt(a, 16);if (i == (tPinLen - 3)) {String b = aPin.substring(tPinLen - 1) + "F";tByte[tTemp + 1] = (byte) Integer.parseInt(b, 16);if ((tTemp + 1) < 7) {for (int x = (tTemp + 2); x < 8; x++) {tByte[x] = (byte) 0xff;}}}tTemp++;i = i + 2;}}} catch (Exception e) {}return tByte;}/*** * @param aPan* @return*/private static byte[] formatPan(String aPan) {int tPanLen = aPan.length();byte[] tByte = new byte[8];;int temp = tPanLen - 13;try {tByte[0] = (byte) 0x00;tByte[1] = (byte) 0x00;for (int i = 2; i < 8; i++) {String a = aPan.substring(temp, temp + 2);tByte[i] = (byte) Integer.parseInt(a, 16);temp = temp + 2;}} catch (Exception e) {}return tByte;}/*** * @param aPin* @param aCardNO* @return*/private static byte[] pin2PinBlockWithCardNO(String aPin, String aCardNO) {byte[] tPinByte = pin2PinBlock(aPin);if (aCardNO.length() == 11) {aCardNO = "00" + aCardNO;} else if (aCardNO.length() == 12) {aCardNO = "0" + aCardNO;}byte[] tPanByte = formatPan(aCardNO);byte[] tByte = new byte[8];for (int i = 0; i < 8; i++) {tByte[i] = (byte) (tPinByte[i] ^ tPanByte[i]);}return tByte;}/**    * luhn算法    *     * @param number    * @return    */   public static int genLuhn(String number) {       number = number + "0";       int s1 = 0, s2 = 0;       String reverse = new StringBuffer(number).reverse().toString();       for (int i = 0; i < reverse.length(); i++) {           int digit = Character.digit(reverse.charAt(i), 10);           if (i % 2 == 0) {// this is for odd digits, they are 1-indexed in //                            // the algorithm               s1 += digit;           } else {// add 2 * digit for 0-4, add 2 * digit - 9 for 5-9               s2 += 2 * digit;               if (digit >= 5) {                   s2 -= 9;               }           }       }       int check = 10 - ((s1 + s2) % 10);       if (check == 10)           check = 0;       return check;   }}