Added encrypt decrypt snippets for java

Author: marcin-cebo

pubnub-gson/pubnub-gson-docs/src/main/java/com/pubnub/docs/miscellaneous/MiscellaneousOthers.java

@@ -1,15 +1,18 @@
 package com.pubnub.docs.miscellaneous;
 
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParser;
 import com.pubnub.api.PubNubException;
 import com.pubnub.api.UserId;
 import com.pubnub.api.crypto.CryptoModule;
+import com.pubnub.api.java.PubNub;
+import com.pubnub.api.java.util.TimetokenUtil;
 import com.pubnub.api.java.v2.PNConfiguration;
 import com.pubnub.api.models.consumer.push.payload.PushPayloadHelper;
 import com.pubnub.docs.SnippetBase;
-import com.pubnub.api.java.PubNub;
-import com.pubnub.api.java.util.TimetokenUtil;
 
 import java.io.InputStream;
+import java.nio.charset.StandardCharsets;
 import java.time.Instant;
 import java.time.LocalDateTime;
 import java.util.HashMap;
@@ -195,4 +198,37 @@ private void createCryptoModuleBasic() {
         PubNub pubNub = PubNub.create(configBuilder.build());
         // snippet.end
     }
+
+    private void encryptApnsBasic() {
+        // https://www.pubnub.com/docs/general/setup/data-security#apns-example
+
+        // snippet.encryptApnsBasic
+        JsonObject clearData = new JsonObject();
+        clearData.addProperty("test_name", "pregnancy");
+        clearData.addProperty("results", "positive");
+        clearData.addProperty("notes", "You are having twins!");
+        byte[]  clearBytes = clearData.toString().getBytes(StandardCharsets.UTF_8);
+
+        CryptoModule aesCbcCryptoModule = CryptoModule.createAesCbcCryptoModule("myCipherKey01", true);
+
+        byte[] encryptedData = aesCbcCryptoModule.encrypt(clearBytes);
+        // [80, 78, 69, 68, 1, 65, 67, 82, 72, 16, 83, 67, -54, -1, 98, -51, 91, 120, 31, 121, 100, 95, 75, 54, -95, 60, -74, 32, 26, 108, 77, 107, -47, 50, -45, -8, 86, -67, 72, 30, -106, -9, 45, -92, -111, 118, 50, -55, -48, -103, -90, -115, -70, 120, -47, -107, 41, 7, -61, 52, -37, -61, 83, -20, 34, -30, -64, 61, 104, 24, 3, 25, 41, -122, -36, 60, 98, -16, 34, 81, -41, 46, 102, 7, -97, 64, -37, -10, 124, 67, -41, 101, 35, -80, -103, -27, -26, -34, -50, -86, -2, -84, 105, 16, -84, 4]
+        // snippet.end
+    }
+
+    private void decryptingMessage() {
+        // https://www.pubnub.com/docs/general/setup/data-security#decrypting-messages
+
+        // snippet.decryptingMessage
+        // parse the received message and pass the encrypted parts to decrypt API.
+        CryptoModule aesCbcCryptoModule = CryptoModule.createAesCbcCryptoModule("myCipherKey01", true);
+        byte[] encryptedData = new byte[]{80, 78, 69, 68, 1, 65, 67, 82, 72, 16, 83, 67, -54, -1, 98, -51, 91, 120, 31, 121, 100, 95, 75, 54, -95, 60, -74, 32, 26, 108, 77, 107, -47, 50, -45, -8, 86, -67, 72, 30, -106, -9, 45, -92, -111, 118, 50, -55, -48, -103, -90, -115, -70, 120, -47, -107, 41, 7, -61, 52, -37, -61, 83, -20, 34, -30, -64, 61, 104, 24, 3, 25, 41, -122, -36, 60, 98, -16, 34, 81, -41, 46, 102, 7, -97, 64, -37, -10, 124, 67, -41, 101, 35, -80, -103, -27, -26, -34, -50, -86, -2, -84, 105, 16, -84, 4};
+
+        byte[] decryptedBytes = aesCbcCryptoModule.decrypt(encryptedData);
+        JsonObject decryptedJson = JsonParser.parseString(new String(decryptedBytes, StandardCharsets.UTF_8)).getAsJsonObject();
+        assert decryptedJson.get("test_name").getAsString().equals("pregnancy");
+        assert decryptedJson.get("results").getAsString().equals("positive");
+        assert decryptedJson.get("notes").getAsString().equals("You are having twins!");
+        // snippet.end
+    }
 }

pubnub-kotlin/pubnub-kotlin-impl/src/test/kotlin/com/pubnub/api/crypto/CryptoModuleTest.kt

@@ -1,5 +1,7 @@
 package com.pubnub.api.crypto
 
+import com.google.gson.JsonObject
+import com.google.gson.JsonParser
 import com.pubnub.api.PubNubError
 import com.pubnub.api.PubNubException
 import com.pubnub.api.crypto.cryptor.Cryptor
@@ -22,7 +24,7 @@ import org.junit.jupiter.params.provider.Arguments
 import org.junit.jupiter.params.provider.MethodSource
 import java.io.ByteArrayInputStream
 import java.io.InputStream
-import java.util.Base64
+import java.util.*
 import org.hamcrest.Matchers.`is` as iz
 
 class CryptoModuleTest {
@@ -149,6 +151,25 @@ class CryptoModuleTest {
         // then
         assertArrayEquals(msgToEncrypt, decryptedMsg)
     }
+    @Test
+    fun mytest() {
+
+        // https://www.pubnub.com/docs/general/setup/data-security#apns-example
+
+        // snippet.encryptApnsBasic
+        val clearData = JsonObject()
+        clearData.addProperty("test_name", "pregnancy")
+        clearData.addProperty("results", "positive")
+        clearData.addProperty("notes", "You are having twins!")
+        val clearBytes: ByteArray = clearData.toString().toByteArray(Charsets.UTF_8)
+        val cipherKey = "enigma"
+        val aesCbcCryptoModule = CryptoModule.createAesCbcCryptoModule(cipherKey)
+        val encryptedData = aesCbcCryptoModule.encrypt(clearBytes)
+
+        val decryptedBytes = aesCbcCryptoModule.decrypt(encryptedData);
+        val decryptedJson: JsonObject = JsonParser.parseString(decryptedBytes.toString(Charsets.UTF_8)).asJsonObject
+        assertEquals(clearData, decryptedJson)
+    }
 
     @Test
     fun `using AesCbcCryptoModule can decrypt message that was encrypted with LegacyCryptor with staticIV `() {