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add method
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@@ -5,7 +5,6 @@ import cn.hutool.core.io.IoUtil;
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import cn.hutool.core.lang.Assert;
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import cn.hutool.core.util.ArrayUtil;
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import cn.hutool.core.util.CharUtil;
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import cn.hutool.core.util.CharsetUtil;
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import cn.hutool.core.util.RandomUtil;
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import cn.hutool.core.util.StrUtil;
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import cn.hutool.crypto.asymmetric.AsymmetricAlgorithm;
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@@ -108,22 +107,43 @@ public class KeyUtil {
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}
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/**
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* 生成 {@link SecretKey},仅用于对称加密和摘要算法密钥生成
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* 生成 {@link SecretKey},仅用于对称加密和摘要算法密钥生成<br>
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* 当指定keySize<0时,AES默认长度为128,其它算法不指定。
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*
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* @param algorithm 算法,支持PBE算法
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* @param keySize 密钥长度
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* @param keySize 密钥长度,<0表示不设定密钥长度,即使用默认长度
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* @return {@link SecretKey}
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* @since 3.1.2
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*/
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public static SecretKey generateKey(String algorithm, int keySize) {
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return generateKey(algorithm, keySize, null);
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}
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/**
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* 生成 {@link SecretKey},仅用于对称加密和摘要算法密钥生成<br>
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* 当指定keySize<0时,AES默认长度为128,其它算法不指定。
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*
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* @param algorithm 算法,支持PBE算法
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* @param keySize 密钥长度,<0表示不设定密钥长度,即使用默认长度
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* @param random 随机数生成器,null表示默认
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* @return {@link SecretKey}
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* @since 5.5.2
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*/
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public static SecretKey generateKey(String algorithm, int keySize, SecureRandom random) {
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algorithm = getMainAlgorithm(algorithm);
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final KeyGenerator keyGenerator = getKeyGenerator(algorithm);
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if (keySize > 0) {
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keyGenerator.init(keySize);
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} else if (SymmetricAlgorithm.AES.getValue().equals(algorithm)) {
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if (keySize <= 0 && SymmetricAlgorithm.AES.getValue().equals(algorithm)) {
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// 对于AES的密钥,除非指定,否则强制使用128位
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keyGenerator.init(128);
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keySize = 128;
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}
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if(keySize > 0){
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if (null == random) {
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keyGenerator.init(keySize);
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} else {
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keyGenerator.init(keySize, random);
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}
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}
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return keyGenerator.generateKey();
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}
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@@ -140,7 +160,7 @@ public class KeyUtil {
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SecretKey secretKey;
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if (algorithm.startsWith("PBE")) {
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// PBE密钥
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secretKey = generatePBEKey(algorithm, (null == key) ? null : StrUtil.str(key, CharsetUtil.CHARSET_UTF_8).toCharArray());
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secretKey = generatePBEKey(algorithm, (null == key) ? null : StrUtil.utf8Str(key).toCharArray());
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} else if (algorithm.startsWith("DES")) {
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// DES密钥
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secretKey = generateDESKey(algorithm, key);
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@@ -2,9 +2,9 @@ package cn.hutool.crypto.symmetric;
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import cn.hutool.core.util.ArrayUtil;
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import cn.hutool.core.util.StrUtil;
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import cn.hutool.crypto.KeyUtil;
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import cn.hutool.crypto.Mode;
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import cn.hutool.crypto.Padding;
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import cn.hutool.crypto.SecureUtil;
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import javax.crypto.SecretKey;
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import javax.crypto.spec.IvParameterSpec;
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@@ -49,6 +49,16 @@ public class AES extends SymmetricCrypto {
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super(SymmetricAlgorithm.AES, key);
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}
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/**
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* 构造,使用默认的AES/ECB/PKCS5Padding
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*
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* @param key 密钥
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* @since 5.5.2
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*/
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public AES(SecretKey key) {
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super(SymmetricAlgorithm.AES, key);
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}
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/**
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* 构造,使用随机密钥
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*
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@@ -152,7 +162,7 @@ public class AES extends SymmetricCrypto {
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*/
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public AES(String mode, String padding, byte[] key, byte[] iv) {
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this(mode, padding,//
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SecureUtil.generateKey(SymmetricAlgorithm.AES.getValue(), key),//
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KeyUtil.generateKey(SymmetricAlgorithm.AES.getValue(), key),//
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ArrayUtil.isEmpty(iv) ? null : new IvParameterSpec(iv));
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}
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@@ -134,7 +134,7 @@ public class SymmetricCrypto implements Serializable {
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*
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* @param algorithm 算法
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* @param key 密钥,如果为<code>null</code>自动生成一个key
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* @return {@link SymmetricCrypto}的子对象,即子对象自身
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* @return SymmetricCrypto的子对象,即子对象自身
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*/
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public SymmetricCrypto init(String algorithm, SecretKey key) {
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Assert.notBlank(algorithm, "'algorithm' must be not blank !");
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@@ -1,13 +1,12 @@
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package cn.hutool.crypto.test.asymmetric;
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import cn.hutool.core.map.MapUtil;
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import org.junit.Assert;
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import org.junit.Test;
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import cn.hutool.core.util.StrUtil;
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import cn.hutool.crypto.SecureUtil;
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import cn.hutool.crypto.asymmetric.Sign;
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import cn.hutool.crypto.asymmetric.SignAlgorithm;
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import org.junit.Assert;
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import org.junit.Test;
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import java.util.HashMap;
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import java.util.Map;
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@@ -2,12 +2,17 @@ package cn.hutool.crypto.test.symmetric;
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import cn.hutool.core.codec.Base64;
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import cn.hutool.core.util.HexUtil;
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import cn.hutool.core.util.RandomUtil;
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import cn.hutool.crypto.KeyUtil;
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import cn.hutool.crypto.Mode;
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import cn.hutool.crypto.Padding;
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import cn.hutool.crypto.symmetric.AES;
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import org.junit.Assert;
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import org.junit.Test;
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import javax.crypto.SecretKey;
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import java.security.SecureRandom;
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public class AESTest {
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@Test
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@@ -95,4 +100,17 @@ public class AESTest {
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Assert.assertEquals("16c5", aes.decryptStr(Base64.decode("ecIQ0+MEkyz56mqciHxtfA==")));
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// ------------------------------------------------------------------------
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}
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@Test
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public void aesWithSha1PrngTest() {
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final SecureRandom random = RandomUtil.getSecureRandom("123456".getBytes());
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final SecretKey secretKey = KeyUtil.generateKey("AES", 128, random);
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String content = "12sdfsdfs你好啊!";
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AES aes = new AES(secretKey);
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final String result1 = aes.encryptBase64(content);
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final String decryptStr = aes.decryptStr(result1);
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Assert.assertEquals(content, decryptStr);
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}
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}
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