Merge pull request #1642 from xbkaishui/v5-dev

对称加密增加update功能

hutool-crypto/src/main/java/cn/hutool/crypto/symmetric/SymmetricCrypto.java

@@ -218,6 +218,34 @@ public class SymmetricCrypto implements Serializable {
 		}
 	}
 
+	/**
+	 * 更新数据，分组加密中间结果可以当作随机数
+	 *
+	 * @param data 被加密的bytes
+	 * @return update之后的bytes
+	 */
+	public byte[] update(byte[] data) {
+		lock.lock();
+		try {
+			final Cipher cipher = initCipher(Cipher.ENCRYPT_MODE);
+			return cipher.update(paddingDataWithZero(data, cipher.getBlockSize()));
+		} catch (Exception e) {
+			throw new CryptoException(e);
+		} finally {
+			lock.unlock();
+		}
+	}
+
+	/**
+	 * 更新数据，分组加密中间结果可以当作随机数
+	 *
+	 * @param data 被加密的bytes
+	 * @return update之后的hex数据
+	 */
+	public String updateHex(byte[] data) {
+		return HexUtil.encodeHexStr(update(data));
+	}
+
 	/**
 	 * 加密，针对大数据量，可选结束后是否关闭流
 	 *

hutool-crypto/src/test/java/cn/hutool/crypto/test/symmetric/SymmetricTest.java

@@ -14,6 +14,7 @@ import cn.hutool.crypto.symmetric.DESede;
 import cn.hutool.crypto.symmetric.SymmetricAlgorithm;
 import cn.hutool.crypto.symmetric.SymmetricCrypto;
 import cn.hutool.crypto.symmetric.Vigenere;
+import java.nio.charset.StandardCharsets;
 import org.junit.Assert;
 import org.junit.Test;
 
@@ -108,6 +109,19 @@ public class SymmetricTest {
 		Assert.assertEquals("cd0e3a249eaf0ed80c330338508898c4bddcfd665a1b414622164a273ca5daf7b4ebd2c00aaa66b84dd0a237708dac8e", encryptHex);
 	}
 
+	@Test
+	public void aesUpdateTest() {
+		String content = "4321c9a2db2e6b08987c3b903d8d11ff";
+		AES aes = new AES(Mode.CBC, Padding.PKCS5Padding, "0123456789ABHAEQ".getBytes(), "DYgjCEIMVrj2W9xN".getBytes());
+
+		// 加密为16进制表示
+		String randomData = aes.updateHex(content.getBytes(StandardCharsets.UTF_8));
+		String randomData2 = aes.updateHex(content.getBytes(StandardCharsets.UTF_8));
+		Assert.assertEquals(randomData2, randomData);
+		Assert.assertEquals(randomData, "cd0e3a249eaf0ed80c330338508898c4");
+	}
+
+
 	@Test
 	public void aesZeroPaddingTest() {
 		String content = RandomUtil.randomString(RandomUtil.randomInt(200));