Method and apparatus for processing data

A method and an apparatus for processing data. The invention relates to a method for processing data, said data being present in the form of at least one data block. The method comprises the followingsteps: providing first secret data; providing a first key allocated to the at least one data block; forming a second key allocated to the at least one data block according to the first secret data and the first key; forming a fourth key by encrypting the second key by means of the third key. 用于处理数据的方法和设备。一种用于处理数据的方法，其中这些数据以至少一个数据块的形式存在，该方法具有如下步骤：提供第一秘密数据；提供被分配给该至少一个数据块的第一密钥；根据第一秘密数据和第一密钥来形成被分配给该至少一个数据块的第二密钥；通过借助于第三密钥对第二密钥进行加密来形成第四密钥。