added svcapi ui and camunda code
[it/otf.git] / otf-service-api / src / main / java / org / oran / otf / common / utility / RSAEncryptDecrypt.java
1 /*  Copyright (c) 2019 AT&T Intellectual Property.                             #\r
2 #                                                                              #\r
3 #   Licensed under the Apache License, Version 2.0 (the "License");            #\r
4 #   you may not use this file except in compliance with the License.           #\r
5 #   You may obtain a copy of the License at                                    #\r
6 #                                                                              #\r
7 #       http://www.apache.org/licenses/LICENSE-2.0                             #\r
8 #                                                                              #\r
9 #   Unless required by applicable law or agreed to in writing, software        #\r
10 #   distributed under the License is distributed on an "AS IS" BASIS,          #\r
11 #   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   #\r
12 #   See the License for the specific language governing permissions and        #\r
13 #   limitations under the License.                                             #\r
14 ##############################################################################*/\r
15 \r
16 \r
17 package org.oran.otf.common.utility;\r
18 \r
19 import java.security.KeyPair;\r
20 import java.security.KeyPairGenerator;\r
21 import java.security.NoSuchAlgorithmException;\r
22 import javax.crypto.Cipher;\r
23 import org.springframework.stereotype.Service;\r
24 \r
25 @Service\r
26 public class RSAEncryptDecrypt {\r
27 \r
28   private KeyPair keyPair;\r
29 \r
30   public RSAEncryptDecrypt() throws NoSuchAlgorithmException {\r
31     this.keyPair = buildKeyPair();\r
32   }\r
33 \r
34   private KeyPair buildKeyPair() throws NoSuchAlgorithmException {\r
35     final int keySize = 2048;\r
36     KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA");\r
37     keyPairGenerator.initialize(keySize);\r
38     return keyPairGenerator.genKeyPair();\r
39   }\r
40 \r
41   public byte[] encrypt(String message) throws Exception {\r
42     Cipher cipher = Cipher.getInstance("RSA");\r
43     cipher.init(Cipher.ENCRYPT_MODE, this.keyPair.getPrivate());\r
44 \r
45     return cipher.doFinal(message.getBytes());\r
46   }\r
47 \r
48   public byte[] decrypt(byte[] encrypted) throws Exception {\r
49     Cipher cipher = Cipher.getInstance("RSA");\r
50     cipher.init(Cipher.DECRYPT_MODE, this.keyPair.getPublic());\r
51 \r
52     return cipher.doFinal(encrypted);\r
53   }\r
54 }\r