Program: 6054
Project: 6054
Buggy source:
/** 
 * Stores an element in the secure store. Although JCEKS supports overwriting keys the interface currently does not support it. If the key already exists then this method throws an AlreadyExistsException.
 * @param namespace The namespace this key belongs to.
 * @param name Name of the element to store.
 * @param data The data that needs to be securely stored.
 * @param description User provided description of the entry.
 * @param properties Metadata associated with the data.
 * @throws NamespaceNotFoundException If the specified namespace does not exist.
 * @throws AlreadyExistsException If the key already exists in the namespace. Updating is not supported.
 * @throws IOException If there was a problem storing the key to the in memory keystoreor if there was problem persisting the keystore.
 */
@Override public void putSecureData(String namespace,String name,byte[] data,String description,Map<String,String> properties) throws Exception {
  checkNamespaceExists(namespace);
  String keyName=getKeyName(namespace,name);
  SecureStoreMetadata meta=SecureStoreMetadata.of(name,description,properties);
  SecureStoreData secureStoreData=new SecureStoreData(meta,data);
  writeLock.lock();
  try {
    if (keyStore.containsAlias(keyName)) {
      throw new AlreadyExistsException((new SecureKeyId(namespace,name)).toId());
    }
    keyStore.setKeyEntry(keyName,new KeyStoreEntry(secureStoreData,meta),password,null);
    flush();
    LOG.debug(String.format("String_Node_Str",name,namespace));
  }
 catch (  KeyStoreException e) {
    throw new IOException("String_Node_Str",e);
  }
 finally {
    writeLock.unlock();
  }
}

Fixed version (ground truth):
/** 
 * Stores an element in the secure store. Although JCEKS supports overwriting keys the interface currently does not support it. If the key already exists then this method throws an AlreadyExistsException.
 * @param namespace The namespace this key belongs to.
 * @param name Name of the element to store.
 * @param data The data that needs to be securely stored.
 * @param description User provided description of the entry.
 * @param properties Metadata associated with the data.
 * @throws NamespaceNotFoundException If the specified namespace does not exist.
 * @throws AlreadyExistsException If the key already exists in the namespace. Updating is not supported.
 * @throws IOException If there was a problem storing the key to the in memory keystoreor if there was problem persisting the keystore.
 */
@Override public void putSecureData(String namespace,String name,String data,String description,Map<String,String> properties) throws Exception {
  checkNamespaceExists(namespace);
  String keyName=getKeyName(namespace,name);
  SecureStoreMetadata meta=SecureStoreMetadata.of(name,description,properties);
  SecureStoreData secureStoreData=new SecureStoreData(meta,data.getBytes(Charsets.UTF_8));
  writeLock.lock();
  try {
    if (keyStore.containsAlias(keyName)) {
      throw new AlreadyExistsException((new SecureKeyId(namespace,name)).toId());
    }
    keyStore.setKeyEntry(keyName,new KeyStoreEntry(secureStoreData,meta),password,null);
    flush();
    LOG.debug(String.format("String_Node_Str",name,namespace));
  }
 catch (  KeyStoreException e) {
    throw new IOException("String_Node_Str",e);
  }
 finally {
    writeLock.unlock();
  }
}