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Signed-off-by: Sola <dev@sola.love>
This commit is contained in:
Sola
2017-12-27 10:59:50 +08:00
parent 9ccd27d9d9
commit 0de1ce63d9
7 changed files with 1 additions and 214 deletions
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81
src/main/java/love/sola/netsupport/util/RSAUtil.java
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/*
* This file is part of WechatTicketSystem.
*
* WechatTicketSystem is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* WechatTicketSystem is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with WechatTicketSystem. If not, see <http://www.gnu.org/licenses/>.
*/
package love.sola.netsupport.util;
import org.apache.commons.codec.binary.Base64;
import javax.crypto.Cipher;
import java.nio.charset.StandardCharsets;
import java.security.Key;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
/**
* @author Sola {@literal <dev@sola.love>}
*/
public class RSAUtil {
public static Key publicKey;
public static Key privateKey;
public static String publicKey_s;
public static String privateKey_s;
static {
genKeyPair();
}
public static void genKeyPair() {
try {
KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA");
kpg.initialize(1024);
KeyPair kp = kpg.genKeyPair();
publicKey = kp.getPublic();
privateKey = kp.getPrivate();
publicKey_s = Base64.encodeBase64String(publicKey.getEncoded());
privateKey_s = Base64.encodeBase64String(privateKey.getEncoded());
} catch (Exception e) {
e.printStackTrace();
}
}
public static String encrypt(String value) {
try {
Cipher cipher = Cipher.getInstance("RSA");
cipher.init(Cipher.ENCRYPT_MODE, publicKey);
byte[] encrypted = cipher.doFinal(value.getBytes(StandardCharsets.UTF_8));
return Base64.encodeBase64String(encrypted);
} catch (Exception ex) {
ex.printStackTrace();
}
return null;
}
public static String decrypt(String encrypted) {
try {
Cipher cipher = Cipher.getInstance("RSA");
cipher.init(Cipher.DECRYPT_MODE, privateKey);
byte[] original = cipher.doFinal(Base64.decodeBase64(encrypted));
return new String(original, StandardCharsets.UTF_8);
} catch (Exception ex) {
ex.printStackTrace();
}
return null;
}
}