Java对字符串进行加密解密的工具类

阳光穿透心脏的1/2处 2022-06-10 02:21 406阅读 0赞

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; } }