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1.2.2 增加RSA签名
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@ -1,6 +1,13 @@
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yexuejc-base 更新记录
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------------------
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#### version ：1.2.2
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**time：2018-11-20 20:20:12** <br/>
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**branch：** master <br/>
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**update：** <br/>
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>1. 优化RSA 加解密
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>1. 增加RSA 签名
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#
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#### version ：1.2.1
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**time：2018-11-9 15:05:06** <br/>
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**branch：** master <br/>
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2
pom.xml
2
pom.xml
@ -6,7 +6,7 @@
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<groupId>com.yexuejc.base</groupId>
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<artifactId>yexuejc-base</artifactId>
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<version>1.2.1</version>
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<version>1.2.2</version>
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<name>${project.artifactId}</name>
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@ -3,9 +3,12 @@ package com.yexuejc.base.encrypt;
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import org.apache.commons.codec.binary.Base64;
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import org.apache.commons.io.IOUtils;
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import org.bouncycastle.jce.provider.BouncyCastleProvider;
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import javax.crypto.Cipher;
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import javax.crypto.NoSuchPaddingException;
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import java.io.ByteArrayOutputStream;
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import java.io.UnsupportedEncodingException;
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import java.security.*;
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import java.security.interfaces.RSAPrivateKey;
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import java.security.interfaces.RSAPublicKey;
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@ -27,6 +30,25 @@ public class RSA {
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public static final String CHARSET = "UTF-8";
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public static final String RSA_ALGORITHM = "RSA";
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/**
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* 加密方式
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* <pre>
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* RSA 可选择isChangeSign 是否每次改变加密结果
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* RSA/None/NoPadding 不改变加密结果
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* RSA/ECB/PKCS1Padding 改变加密结果
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* </pre>
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*/
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public static String RSA_ALGORITHM_ECB = "RSA";
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/**
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* 是否每次改变加密结果
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* 只针对于RSA_ALGORITHM_ECB = "RSA"有效
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*/
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public static boolean isChangeSign = true;
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/**
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* 签名算法
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*/
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public static SignAlgorithm signAlgorithm = SignAlgorithm.SHA1withRSA;
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public static Map<String, String> initKeys(int keySize) {
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//为RSA算法创建一个KeyPairGenerator对象
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@ -61,7 +83,7 @@ public class RSA {
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* @param publicKey 密钥字符串（经过base64编码）
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* @throws Exception
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*/
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public static RSAPublicKey getPublicKey(String publicKey) throws NoSuchAlgorithmException, InvalidKeySpecException {
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public static RSAPublicKey getPublicKey(String publicKey) throws NoSuchAlgorithmException, InvalidKeySpecException{
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//通过X509编码的Key指令获得公钥对象
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KeyFactory keyFactory = KeyFactory.getInstance(RSA_ALGORITHM);
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X509EncodedKeySpec x509KeySpec = new X509EncodedKeySpec(Base64.decodeBase64(publicKey));
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@ -92,7 +114,7 @@ public class RSA {
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*/
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public static String publicEncrypt(String data, RSAPublicKey publicKey) {
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try {
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Cipher cipher = Cipher.getInstance(RSA_ALGORITHM);
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Cipher cipher = getCipher();
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cipher.init(Cipher.ENCRYPT_MODE, publicKey);
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return Base64.encodeBase64URLSafeString(rsaSplitCodec(cipher, Cipher.ENCRYPT_MODE, data.getBytes(CHARSET), publicKey.getModulus().bitLength()));
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} catch (Exception e) {
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@ -109,7 +131,7 @@ public class RSA {
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*/
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public static String privateDecrypt(String data, RSAPrivateKey privateKey) {
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try {
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Cipher cipher = Cipher.getInstance(RSA_ALGORITHM);
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Cipher cipher = getCipher();
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cipher.init(Cipher.DECRYPT_MODE, privateKey);
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return new String(rsaSplitCodec(cipher, Cipher.DECRYPT_MODE, Base64.decodeBase64(data), privateKey.getModulus().bitLength()), CHARSET);
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} catch (Exception e) {
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@ -117,6 +139,7 @@ public class RSA {
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}
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}
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/**
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* 私钥加密
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*
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@ -127,7 +150,7 @@ public class RSA {
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public static String privateEncrypt(String data, RSAPrivateKey privateKey) {
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try {
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Cipher cipher = Cipher.getInstance(RSA_ALGORITHM);
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Cipher cipher = getCipher();
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cipher.init(Cipher.ENCRYPT_MODE, privateKey);
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return Base64.encodeBase64URLSafeString(rsaSplitCodec(cipher, Cipher.ENCRYPT_MODE, data.getBytes(CHARSET), privateKey.getModulus().bitLength()));
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} catch (Exception e) {
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@ -145,7 +168,7 @@ public class RSA {
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public static String publicDecrypt(String data, RSAPublicKey publicKey) {
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try {
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Cipher cipher = Cipher.getInstance(RSA_ALGORITHM);
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Cipher cipher = getCipher();
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cipher.init(Cipher.DECRYPT_MODE, publicKey);
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return new String(rsaSplitCodec(cipher, Cipher.DECRYPT_MODE, Base64.decodeBase64(data), publicKey.getModulus().bitLength()), CHARSET);
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} catch (Exception e) {
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@ -153,6 +176,25 @@ public class RSA {
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}
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}
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/**
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* 获取 Cipher
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*
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* @return
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* @throws NoSuchPaddingException
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* @throws NoSuchAlgorithmException
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* @throws NoSuchProviderException
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*/
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private static Cipher getCipher() throws NoSuchPaddingException, NoSuchAlgorithmException, NoSuchProviderException {
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Cipher cipher;
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if ("RSA".equals(RSA_ALGORITHM_ECB) && isChangeSign) {
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cipher = Cipher.getInstance(RSA_ALGORITHM_ECB);
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} else {
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Security.addProvider(new BouncyCastleProvider());
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cipher = Cipher.getInstance(RSA_ALGORITHM_ECB, "BC");
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}
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return cipher;
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}
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private static byte[] rsaSplitCodec(Cipher cipher, int opmode, byte[] datas, int keySize) {
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int maxBlock = 0;
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if (opmode == Cipher.DECRYPT_MODE) {
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@ -183,4 +225,66 @@ public class RSA {
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return resultDatas;
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}
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private static Signature signature;
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/**
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* 私钥签名：默认算法SHA1withRSA
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* <p>
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* 签名算法 {@link SignAlgorithm}
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* </p>
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*
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* @param plaintext 签名字符串
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* @param privateKey 签名私钥
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* @return
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* @throws NoSuchAlgorithmException
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*/
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public static String sign(String plaintext, RSAPrivateKey privateKey) throws NoSuchAlgorithmException {
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signature = Signature.getInstance(signAlgorithm.getValue());
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String signBase64Str = "";
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try {
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signature.initSign(privateKey);
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try {
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signature.update(plaintext.getBytes(CHARSET));
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} catch (UnsupportedEncodingException e) {
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e.printStackTrace();
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throw new RuntimeException("签名字符串[" + plaintext + "]的数据时发生异常", e);
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}
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signBase64Str = Base64.encodeBase64String(signature.sign());
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return signBase64Str;
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} catch (InvalidKeyException var6) {
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var6.printStackTrace();
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throw new RuntimeException("签名字符串[" + plaintext + "]的数据时发生异常", var6);
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} catch (SignatureException var7) {
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var7.printStackTrace();
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throw new RuntimeException("签名字符串[" + plaintext + "]的数据时发生异常", var7);
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}
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}
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/**
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* 公钥校验签名
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*
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* @param plaintext 原串
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* @param signStr 签名串
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* @param publicKey 公钥
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* @return
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* @throws UnsupportedEncodingException
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*/
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public static boolean verify(String plaintext, String signStr, RSAPublicKey publicKey) throws UnsupportedEncodingException {
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boolean isValid = false;
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try {
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signature.initVerify(publicKey);
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signature.update(plaintext.getBytes(CHARSET));
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isValid = signature.verify(Base64.decodeBase64(signStr));
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} catch (InvalidKeyException var6) {
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var6.printStackTrace();
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throw new RuntimeException("校验签名字符串[" + plaintext + "]的数据时发生异常", var6);
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} catch (SignatureException var7) {
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var7.printStackTrace();
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throw new RuntimeException("校验签名字符串[" + plaintext + "]的数据时发生异常", var7);
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}
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return isValid;
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}
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}
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53
src/main/java/com/yexuejc/base/encrypt/SignAlgorithm.java
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53
src/main/java/com/yexuejc/base/encrypt/SignAlgorithm.java
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@ -0,0 +1,53 @@
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package com.yexuejc.base.encrypt;
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/**
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* 签名算法类型
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* 参考Hutool
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* see: https://docs.oracle.com/javase/7/docs/technotes/guides/security/StandardNames.html#Signature
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*/
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public enum SignAlgorithm {
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// The RSA signature algorithm
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NONEwithRSA("NONEwithRSA"),
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// The MD2/MD5 with RSA Encryption signature algorithm
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MD2withRSA("MD2withRSA"),
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MD5withRSA("MD5withRSA"),
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// The signature algorithm with SHA-* and the RSA
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SHA1withRSA("SHA1withRSA"),
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SHA256withRSA("SHA256withRSA"),
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SHA384withRSA("SHA384withRSA"),
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SHA512withRSA("SHA512withRSA"),
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// The Digital Signature Algorithm
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NONEwithDSA("NONEwithDSA"),
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// The DSA with SHA-1 signature algorithm
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SHA1withDSA("SHA1withDSA"),
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// The ECDSA signature algorithms
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NONEwithECDSA("NONEwithECDSA"),
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SHA1withECDSA("SHA1withECDSA"),
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SHA256withECDSA("SHA256withECDSA"),
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SHA384withECDSA("SHA384withECDSA"),
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SHA512withECDSA("SHA512withECDSA");
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private String value;
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/**
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* 构造
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*
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* @param value 算法字符表示，区分大小写
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*/
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private SignAlgorithm(String value) {
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this.value = value;
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}
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/**
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* 获取算法字符串表示，区分大小写
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*
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* @return 算法字符串表示
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*/
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public String getValue() {
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return this.value;
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}
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}
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