Data encoding and decoding apparatus and method thereof for verifying data integrity

A data decoding apparatus for verifying data integrity by using a white box cipher, comprising:

• a processor;
• and
• a non-transitory computer-readable storage medium having
• a license information associated with an encoded data content;
• an encoded data content encoded with an unencoded white box cipher table;
• an encoded white box cipher table encoded with the license information;
• an arithmetic logic unit configured to decode the encoded white box cipher table using the license information to produce an unencoded white box cipher table;
• and
• a decoding unit configured to decode the encoded data content using the unencoded white box cipher table to produce unencoded data contents,
• wherein the integrity of the data content is verified when the unencoded white box cipher table is restored using the license information, and
• wherein the integrity of the data content is not verified when the unencoded white box cipher table cannot be restored.

A data encoding method for verifying data integrity by using a white box cipher, comprising:

• encoding a data content using an unencoded white box cipher table to produce an encoded data content, wherein the data content is associated with a license information;
• encoding the unencoded white box cipher table using the license information to produce an encoded white box cipher table;
• and
• transmitting the license information, the encoded data content and the encoded white box cipher table a client,
• wherein the integrity of the data content is verified when the client restores the unencoded white box cipher table using the license information, and
• wherein the integrity of the data content is not verified when the unencoded white box cipher table cannot be restored.

A data decoding method for verifying data integrity by using a white box cipher, comprising:

• receiving a license information associated with an encoded data content;
• receiving an encoded data content encoded with an unencoded white box cipher table;
• receiving an encoded white box cipher table encoded with the license information,
• decoding the encoded white box cipher table using the license information to produce an unencoded white box cipher table;
• and
• decoding the encoded data content using the unencoded white box cipher table to produce unencoded data contents,
• wherein the integrity of the data content is verified when the unencoded white box cipher table is restored using the license information, and
• wherein the integrity of the data content is not verified when the unencoded white box cipher table cannot be restored.