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- import org.apache.commons.codec.binary.Hex;
- import org.bouncycastle.jce.provider.BouncyCastleProvider;
- import org.bouncycastle.pqc.math.linearalgebra.ByteUtils;
-
- import javax.crypto.Cipher;
- import javax.crypto.KeyGenerator;
- import javax.crypto.spec.SecretKeySpec;
- import java.security.Key;
- import java.security.SecureRandom;
- import java.security.Security;
- import java.util.Arrays;
-
- public class SM4Util {
-
- static {
- Security.addProvider(new BouncyCastleProvider());
- }
-
- private static final String ENCODING = "UTF-8";
- public static final String ALGORITHM_NAME = "SM4";
- // 加密算法/分组加密模式/分组填充方式
- // PKCS5Padding-以8个字节为一组进行分组加密
- // 定义分组加密模式使用:PKCS5Padding
- public static final String ALGORITHM_NAME_ECB_PADDING = "SM4/ECB/PKCS5Padding";
- // 128-32位16进制;256-64位16进制
- public static final int DEFAULT_KEY_SIZE = 128;
-
- /**
- * 自动生成密钥
- *
- * @return
- * @explain
- */
- public static String generateKey() throws Exception {
- return new String(Hex.encodeHex(generateKey(DEFAULT_KEY_SIZE),false));
- }
-
- /**
- * @param keySize
- * @return
- * @throws Exception
- * @explain
- */
- public static byte[] generateKey(int keySize) throws Exception {
- KeyGenerator kg = KeyGenerator.getInstance(ALGORITHM_NAME, BouncyCastleProvider.PROVIDER_NAME);
- kg.init(keySize, new SecureRandom());
- return kg.generateKey().getEncoded();
- }
-
- /**
- * 生成ECB暗号
- *
- * @param algorithmName 算法名称
- * @param mode 模式
- * @param key
- * @return
- * @throws Exception
- * @explain ECB模式(电子密码本模式:Electronic codebook)
- */
- private static Cipher generateEcbCipher(String algorithmName, int mode, byte[] key) throws Exception {
- Cipher cipher = Cipher.getInstance(algorithmName, BouncyCastleProvider.PROVIDER_NAME);
- Key sm4Key = new SecretKeySpec(key, ALGORITHM_NAME);
- cipher.init(mode, sm4Key);
- return cipher;
- }
-
- /**
- * sm4加密
- *
- * @param hexKey 16进制密钥(忽略大小写)
- * @param paramStr 待加密字符串
- * @return 返回16进制的加密字符串
- * @explain 加密模式:ECB
- * 密文长度不固定,会随着被加密字符串长度的变化而变化
- */
- public static String encryptEcb(String hexKey, String paramStr) {
- try {
- String cipherText = "";
- // 16进制字符串-->byte[]
- byte[] keyData = ByteUtils.fromHexString(hexKey);
- // String-->byte[]
- byte[] srcData = paramStr.getBytes(ENCODING);
- // 加密后的数组
- byte[] cipherArray = encrypt_Ecb_Padding(keyData, srcData);
- // byte[]-->hexString
- cipherText = ByteUtils.toHexString(cipherArray);
- return cipherText;
- } catch (Exception e) {
- e.printStackTrace();
- return paramStr;
- }
- }
-
- /**
- * 加密模式之Ecb
- *
- * @param key
- * @param data
- * @return
- * @throws Exception
- * @explain
- */
- public static byte[] encrypt_Ecb_Padding(byte[] key, byte[] data) throws Exception {
- Cipher cipher = generateEcbCipher(ALGORITHM_NAME_ECB_PADDING, Cipher.ENCRYPT_MODE, key);
- return cipher.doFinal(data);
- }
-
- /**
- * sm4解密
- *
- * @param hexKey 16进制密钥
- * @param cipherText 16进制的加密字符串(忽略大小写)
- * @return 解密后的字符串
- * @throws Exception
- * @explain 解密模式:采用ECB
- */
- public static String decryptEcb(String hexKey, String cipherText) {
- // 用于接收解密后的字符串
- String decryptStr = "";
- // hexString-->byte[]
- byte[] keyData = ByteUtils.fromHexString(hexKey);
- // hexString-->byte[]
- byte[] cipherData = ByteUtils.fromHexString(cipherText);
- // 解密
- byte[] srcData = new byte[0];
- try {
- srcData = decrypt_Ecb_Padding(keyData, cipherData);
- // byte[]-->String
- decryptStr = new String(srcData, ENCODING);
- } catch (Exception e) {
- e.printStackTrace();
- }
- return decryptStr;
- }
-
- /**
- * 解密
- *
- * @param key
- * @param cipherText
- * @return
- * @throws Exception
- * @explain
- */
- public static byte[] decrypt_Ecb_Padding(byte[] key, byte[] cipherText) throws Exception {
- Cipher cipher = generateEcbCipher(ALGORITHM_NAME_ECB_PADDING, Cipher.DECRYPT_MODE, key);
- return cipher.doFinal(cipherText);
- }
-
- /**
- * 校验加密前后的字符串是否为同一数据
- *
- * @param hexKey 16进制密钥(忽略大小写)
- * @param cipherText 16进制加密后的字符串
- * @param paramStr 加密前的字符串
- * @return 是否为同一数据
- * @throws Exception
- * @explain
- */
- public static boolean verifyEcb(String hexKey, String cipherText, String paramStr) throws Exception {
- // 用于接收校验结果
- boolean flag = false;
- // hexString-->byte[]
- byte[] keyData = ByteUtils.fromHexString(hexKey);
- // 将16进制字符串转换成数组
- byte[] cipherData = ByteUtils.fromHexString(cipherText);
- // 解密
- byte[] decryptData = decrypt_Ecb_Padding(keyData, cipherData);
- // 将原字符串转换成byte[]
- byte[] srcData = paramStr.getBytes(ENCODING);
- // 判断2个数组是否一致
- flag = Arrays.equals(decryptData, srcData);
- return flag;
- }
-
-
- }
- <dependency>
- <groupId>org.bouncycastle</groupId>
- <artifactId>bcprov-jdk15on</artifactId>
- <version>1.56</version>
- </dependency>
本地不报错 上线后报错
往linux上的jdk文件夹 /jre/lib/ext 下加入bcprov-jdk15on 的jar包即可 每个版本都试一下
把jar包版本换一下也可
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