Initial APIM-Addon-Project with hexCryptoProject

hexCryptoMediator/.vscode/settings.json

+{
+    "java.configuration.updateBuildConfiguration": "interactive"
+}
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hexCryptoMediator/pom.xml

+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <groupId>com.techberry.async.hexCryptoMediator</groupId>
+  <artifactId>hexCryptoMediator</artifactId>
+  <packaging>jar</packaging>
+  <version>1.0</version>
+  <name>hexCryptoMediator</name>
+
+  <parent>
+    <groupId>org.wso2</groupId>
+    <artifactId>wso2</artifactId>
+    <version>1</version>
+    
+</parent>
+
+  <build>
+    <plugins>
+        <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-compiler-plugin</artifactId>
+            <version>3.6.1</version>
+            <configuration>
+                <source>1.8</source>
+                <target>1.8</target>
+            </configuration>
+        </plugin>
+    </plugins>
+</build>
+
+  <dependencies>
+    <dependency>
+      <groupId>org.apache.synapse</groupId>
+      <artifactId>synapse-core</artifactId>
+      <version>2.1.7-wso2v7</version>
+    </dependency>
+
+    <dependency>
+        <groupId>org.wso2.carbon.apimgt</groupId>
+        <artifactId>org.wso2.carbon.apimgt.gateway</artifactId>
+        <version>6.5.0</version>
+    </dependency>
+
+  </dependencies>
+</project>

hexCryptoMediator/src/main/java/com/techberry/crypto/hexCryptoMediator/HexCryptoMediator.java

+package com.techberry.crypto.hexCryptoMediator;
+
+import com.techberry.crypto.hexCryptoMediator.utils.HexCryptoUtil;
+
+import org.apache.synapse.MessageContext;
+import org.apache.synapse.mediators.AbstractMediator;
+
+public class HexCryptoMediator extends AbstractMediator {
+
+    private String key;
+    private String data;
+    private String mode;
+
+    @Override
+    public boolean mediate(MessageContext synCtx) {
+
+        if("encrypt".equalsIgnoreCase(mode)){
+            data = HexCryptoUtil.encryptData(data, key);
+            synCtx.setProperty("data",data);
+        }else if("decrypt".equalsIgnoreCase(mode)){
+            data = HexCryptoUtil.decryptData(data, key);
+            synCtx.setProperty("data",data);
+        }else{
+            
+        }
+
+        return true;
+    }
+
+    public String getMode() {
+        return mode;
+    }
+
+    public void setMode(String mode) {
+        this.mode = mode;
+    }
+
+    public String getKey() {
+        return key;
+    }
+
+    public void setKey(String key) {
+        this.key = key;
+    }
+
+    public String getData() {
+        return data;
+    }
+
+    public void setData(String data) {
+        this.data = data;
+    }
+
+}

hexCryptoMediator/src/main/java/com/techberry/crypto/hexCryptoMediator/utils/HexCryptoUtil.java

+package com.techberry.crypto.hexCryptoMediator.utils;
+
+import org.apache.commons.codec.binary.StringUtils;
+
+public class HexCryptoUtil {
+
+    public static String decryptData(String data, String key) {
+        try {
+            int nLen = data.length();
+            int nKeyLen = key.length();
+            byte[] bdata = new byte[nLen / 2];
+            int nCount = 0;
+            for (int i = 0; i < nLen; i += 2) {
+                byte byteData = toByte("" + data.charAt(i) + data.charAt(i + 1));
+                bdata[nCount] = (byte) (byteData ^ key.charAt(nCount % nKeyLen));
+                nCount++;
+            }
+            // return Encoding.UTF8.GetString(bdata);
+            return StringUtils.newStringUtf8(bdata);
+        } catch (Exception e) {
+            return null;
+        }
+    }
+
+    private static byte toByte(String data) {
+        return (byte) ((((int) data.charAt(0) - 0x41) << 4) | ((int) data.charAt(1) - 0x41));
+    }
+
+    public static String encryptData(String sdata, String key) {
+        StringBuilder sb = new StringBuilder();
+        // byte[] bdata = Encoding.UTF8.GetBytes(sdata);
+        byte[] bdata = StringUtils.getBytesUtf8(sdata);
+        int nLen = bdata.length;
+        int nKeyLen = key.length();
+
+        for (int i = 0; i < nLen; i++) {
+            sb.append(toHex(((char) (bdata[i] ^ key.charAt(i % nKeyLen)))));
+        }
+        return sb.toString();
+    }
+
+    private static String toHex(char data) {
+        StringBuilder sb = new StringBuilder();
+        int nCh = (int) (data);
+        sb.append((char) (((nCh >> 4) & 15) + 0x41));
+        sb.append((char) ((nCh & 15) + 0x41));
+        return sb.toString();
+    }
+
+}
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