ps网站参考线怎么做,网站建设好的图片,网站建设必须要备案吗,深圳有哪几个区前言项目里需要用到sm4加密#xff0c;在这里记录一下(springboot)。依赖bouncycastleorg.bouncycastlebcmail-jdk15on1.66cn.hutoolhutool-all5.4.1代码直接贴代码#xff0c;可以根据自己的需要封装相对应的代码逻辑。//需要注意的是#xff0c;使用KeyGenerator生成密钥种…前言项目里需要用到sm4加密在这里记录一下(springboot)。依赖bouncycastleorg.bouncycastlebcmail-jdk15on1.66cn.hutoolhutool-all5.4.1代码直接贴代码可以根据自己的需要封装相对应的代码逻辑。//需要注意的是使用KeyGenerator生成密钥种子的时候windows和linux上会产生不一致。//例如KeyGenerator kg KeyGenerator.getInstance(ALGORITHM_NAME, PROVIDER_NAME);SecureRandom random new SecureRandom();if(null ! seed !.equals(seed)){random.setSeed(seed.getBytes());}kg.init(keySize, random);//解决办法SecureRandom random SecureRandom.getInstance(SHA1PRNG);import cn.hutool.core.util.HexUtil;import com.spinfo.common.constants.UserConstants;import com.spinfo.controller.UserController;import org.bouncycastle.jce.provider.BouncyCastleProvider;import org.bouncycastle.util.encoders.Base64;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.util.DigestUtils;import javax.crypto.*;import javax.crypto.spec.IvParameterSpec;import javax.crypto.spec.SecretKeySpec;import java.security.*;import java.util.Arrays;public class SM4Util {private static Logger logger LoggerFactory.getLogger(SM4Util.class);private static final String PROVIDER_NAME BC;public static final String ALGORITHM_NAME SM4;public static final String ALGORITHM_NAME_ECB_PADDING SM4/ECB/PKCS5Padding;public static final String ALGORITHM_NAME_CBC_PADDING SM4/CBC/PKCS5Padding;public static final String DEFAULT_KEY random_seed;public static final int DEFAULT_KEY_SIZE 128;private static final int ENCRYPT_MODE 1;private static final int DECRYPT_MODE 2;static {Security.addProvider(new BouncyCastleProvider());}public static byte[] generateKey() throws NoSuchAlgorithmException, NoSuchProviderException {return generateKey(DEFAULT_KEY, DEFAULT_KEY_SIZE);}public static byte[] generateKey(String seed) throws NoSuchAlgorithmException, NoSuchProviderException {return generateKey(seed, DEFAULT_KEY_SIZE);}public static byte[] generateKey(String seed, int keySize) throws NoSuchAlgorithmException, NoSuchProviderException {KeyGenerator kg KeyGenerator.getInstance(ALGORITHM_NAME, PROVIDER_NAME);SecureRandom random SecureRandom.getInstance(SHA1PRNG);if(null ! seed !.equals(seed)){random.setSeed(seed.getBytes());}kg.init(keySize, random);return kg.generateKey().getEncoded();}/*** ecb 加密* param key* param data*/public static byte[] encryptEcbPadding(byte[] key, byte[] data) throws InvalidKeyException, NoSuchAlgorithmException, NoSuchProviderException, NoSuchPaddingException, IllegalBlockSizeException, BadPaddingException {Cipher cipher generateEcbCipher(ENCRYPT_MODE, key);return cipher.doFinal(data);}/*** ecb 解密* param key* param cipherText*/public static byte[] decryptEcbPadding(byte[] key, byte[] cipherText) throws IllegalBlockSizeException, BadPaddingException, InvalidKeyException, NoSuchAlgorithmException, NoSuchProviderException, NoSuchPaddingException {Cipher cipher generateEcbCipher(DECRYPT_MODE, key);return cipher.doFinal(cipherText);}/*** cbc 加密* param key* param data*/public static byte[] encryptCbcPadding(byte[] key, byte[] iv, byte[] data) throws InvalidKeyException, NoSuchAlgorithmException, NoSuchProviderException, NoSuchPaddingException, IllegalBlockSizeException, BadPaddingException, InvalidAlgorithmParameterException {Cipher cipher generateCbcCipher(ENCRYPT_MODE, key, iv);return cipher.doFinal(data);}public static String encryptCbcPaddingString(byte[] key, byte[] iv, byte[] data) throws InvalidKeyException, NoSuchAlgorithmException, NoSuchProviderException, NoSuchPaddingException, IllegalBlockSizeException, BadPaddingException, InvalidAlgorithmParameterException {Cipher cipher generateCbcCipher(ENCRYPT_MODE, key, iv);byte[] result cipher.doFinal(data);return Base64.toBase64String(result);}/*** cbc 解密* param key* param iv* param cipherText*/public static byte[] decryptCbcPadding(byte[] key, byte[] iv, String cipherText) throws IllegalBlockSizeException, BadPaddingException, InvalidKeyException, NoSuchAlgorithmException, NoSuchProviderException, NoSuchPaddingException, InvalidAlgorithmParameterException {byte[] cipherBytes Base64.decode(cipherText);Cipher cipher generateCbcCipher(DECRYPT_MODE, key, iv);return cipher.doFinal(cipherBytes);}public static byte[] decryptCbcPadding(byte[] key, byte[] iv, byte[] cipherText) throws IllegalBlockSizeException, BadPaddingException, InvalidKeyException, NoSuchAlgorithmException, NoSuchProviderException, NoSuchPaddingException, InvalidAlgorithmParameterException {Cipher cipher generateCbcCipher(DECRYPT_MODE, key, iv);return cipher.doFinal(cipherText);}/*** ecb cipher* param mode* param key* return*/private static Cipher generateEcbCipher(int mode, byte[] key) throws NoSuchAlgorithmException, NoSuchProviderException, NoSuchPaddingException, InvalidKeyException {Cipher cipher Cipher.getInstance(ALGORITHM_NAME_ECB_PADDING, PROVIDER_NAME);Key sm4Key new SecretKeySpec(key, ALGORITHM_NAME);cipher.init(mode, sm4Key);return cipher;}/*** cbc cipher* param mode* param key* return*/private static Cipher generateCbcCipher(int mode, byte[] key, byte[] iv) throws InvalidKeyException, InvalidAlgorithmParameterException, NoSuchAlgorithmException, NoSuchProviderException, NoSuchPaddingException {Cipher cipher Cipher.getInstance(ALGORITHM_NAME_CBC_PADDING, PROVIDER_NAME);Key sm4Key new SecretKeySpec(key, ALGORITHM_NAME);IvParameterSpec ivParameterSpec new IvParameterSpec(iv);cipher.init(mode, sm4Key, ivParameterSpec);return cipher;}/*** ecb 加密 times 次* param data* param salt* param times* return*/public static String encryptEcbDataTimes(String data, String salt, int times) throws GeneralSecurityException {try {byte[] key HexUtil.decodeHex(salt);byte[] bytes data.getBytes();for(int i 0; i times; i) {bytes encryptEcbPadding(key, bytes);}data Base64.toBase64String(bytes);return data;} catch (BadPaddingException | IllegalBlockSizeException | NoSuchPaddingException | NoSuchProviderException | NoSuchAlgorithmException | InvalidKeyException var5) {throw new GeneralSecurityException(SM4加密失败);}}/*** ecb 解密 times 次* param data* param salt* param times* return* throws GeneralSecurityException*/public static String decryptEcbDataTimes(String data, String salt, int times) throws GeneralSecurityException {try {byte[] bytes Base64.decode(data);byte[] key HexUtil.decodeHex(salt);for(int i 0; i times; i) {bytes decryptEcbPadding(key, bytes);}data new String(bytes);return data;} catch (BadPaddingException | IllegalBlockSizeException | NoSuchPaddingException | NoSuchProviderException | NoSuchAlgorithmException | InvalidKeyException var5) {throw new GeneralSecurityException(SM4解密失败);}}/*** cbc 加密 times 次* param data* param salt* param times* return*/public static String encryptCbcDataTimes(String data, String salt, int times) {try {byte[] iv generateKey();byte[] key generateKey(salt);byte[] bytes data.getBytes();Cipher cipher generateCbcCipher(ENCRYPT_MODE, key, iv);for(int i 0; i times; i) {bytes cipher.doFinal(bytes);}data Base64.toBase64String(bytes);return data;} catch (Exception e) {e.printStackTrace();return null;}}/*** cbc 解密 times 次* param data* param salt* param times* return* throws GeneralSecurityException*/public static String decryptCbcDataTimes(String data, String salt, int times) throws GeneralSecurityException {try {byte[] iv generateKey();byte[] bytes Base64.decode(data);byte[] key generateKey(salt);Cipher cipher generateCbcCipher(ENCRYPT_MODE, key, iv);for(int i 0; i times; i) {bytes cipher.doFinal(bytes);}data new String(bytes);return data;} catch (BadPaddingException | IllegalBlockSizeException | NoSuchPaddingException | NoSuchProviderException | NoSuchAlgorithmException | InvalidKeyException var5) {throw new GeneralSecurityException(SM4解密失败);}}}
