Java加密解密等操作的工具类

package com.unionpay.acp.sdk;

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 {

/*[b][b][b][b][b][b][b][b][b][b][b][b][b][b][b]**[/b][/b][/b][/b][/b][/b][/b][/b][/b][/b][/b][/b][/b][/b][/b]

if (tPinLen > 9) { tByte[0] = (byte) Integer.parseInt(new

Integer(tPinLen) .toString(), 16); } else { tByte[0] = (byte)

Integer.parseInt(new Integer(tPinLen) .toString(), 10); }

[b][b][b][b][b][b][b][b][b][b][b][b][b][b][b]**[/b][/b][/b][/b][/b][/b][/b][/b][/b][/b][/b][/b][/b][/b][/b]/
// 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;
}
}