feat: add randomCipheringData

src/main/java/io/twentysixty/sa/client/model/message/Ciphering.java

@@ -1,31 +1,16 @@
 package io.twentysixty.sa.client.model.message;
 
 import java.io.Serializable;
+import lombok.Getter;
+import lombok.Setter;
+import lombok.ToString;
 
+@Setter
+@Getter
+@ToString
 public class Ciphering implements Serializable {
 
   private static final long serialVersionUID = -8660299956191649637L;
   private String algorithm;
   private Parameters parameters;
-
-  public String getAlgorithm() {
-    return algorithm;
-  }
-
-  public void setAlgorithm(String algorithm) {
-    this.algorithm = algorithm;
-  }
-
-  public Parameters getParameters() {
-    return parameters;
-  }
-
-  public void setParameters(Parameters parameters) {
-    this.parameters = parameters;
-  }
-
-  @Override
-  public String toString() {
-    return "Ciphering [algorithm=" + algorithm + ", parameters=" + parameters + "]";
-  }
 }

src/main/java/io/twentysixty/sa/client/model/message/Parameters.java

@@ -1,31 +1,16 @@
 package io.twentysixty.sa.client.model.message;
 
 import java.io.Serializable;
+import lombok.Getter;
+import lombok.Setter;
+import lombok.ToString;
 
+@Setter
+@Getter
+@ToString
 public class Parameters implements Serializable {
 
   private static final long serialVersionUID = -3591319454008944749L;
   private String key;
   private String iv;
-
-  public String getKey() {
-    return key;
-  }
-
-  public void setKey(String key) {
-    this.key = key;
-  }
-
-  public String getIv() {
-    return iv;
-  }
-
-  public void setIv(String iv) {
-    this.iv = iv;
-  }
-
-  @Override
-  public String toString() {
-    return "Parameters [key=" + key + ", iv=" + iv + "]";
-  }
 }

src/main/java/io/twentysixty/sa/client/util/Aes256cbc.java

@@ -1,6 +1,10 @@
 package io.twentysixty.sa.client.util;
 
+import io.twentysixty.sa.client.model.message.Ciphering;
+import io.twentysixty.sa.client.model.message.Parameters;
 import javax.crypto.Cipher;
+import javax.crypto.KeyGenerator;
+import javax.crypto.SecretKey;
 import javax.crypto.spec.IvParameterSpec;
 import javax.crypto.spec.SecretKeySpec;
 import org.jboss.logging.Logger;
@@ -40,4 +44,21 @@ public static byte[] decrypt(String key, String iv, byte[] encrypted) throws Exc
     byte[] decrypted = cipher.doFinal(encrypted);
     return decrypted;
   }
+
+  public static Ciphering randomCipheringData() throws Exception {
+    Ciphering c = new Ciphering();
+    Parameters p = new Parameters();
+    p.setKey(randomKey(32));
+    p.setIv(randomKey(16));
+    c.setAlgorithm(cI);
+    c.setParameters(p);
+    return c;
+  }
+
+  private static String randomKey(int size) throws Exception {
+    KeyGenerator keyGen = KeyGenerator.getInstance(alg);
+    keyGen.init(size * 8);
+    SecretKey secretKey = keyGen.generateKey();
+    return ISOUtil.dumpString(secretKey.getEncoded());
+  }
 }