Data files embedding steganographic repeats of palindromic fingerprints for authorship protection

A method of verifying a correspondence between data files, wherein the method comprises:

• accessing a data file containing binary data that represents analogue data;
• scanning through a representation of the binary data of the accessed data file to detect a sequence in a binary representation of a payload embedded in the binary data, wherein
• the payload includes repeats of the sequence,
• the sequence contains a palindrome that is based on a digital fingerprint of a variant of the accessed data file, and
• said variant contains substitutive bit values in place of the embedded binary representation;
• and
• comparing the palindrome contained in the detected sequence to a reference palindrome corresponding to reference data file, to identify a correspondence between the accessed data file and the reference data file.

A data file, comprising:

• binary data that represent analogue data, and
• a binary representation of a payload embedded in the data file, in place of some least significant bits of the binary data,
• wherein
• the payload includes repeats of a sequence, and
• the sequence contains a palindrome that is based on a digital fingerprint of a variant to said data file, said variant containing substitutive bit values in place of the embedded binary representation.

A computer program product for processing a data file, the computer program product comprising a non-transitory computer readable storage medium having program instructions embodied therewith, the program instructions executable by processing means of a computerized system to cause the processing means to:

• access a data file containing binary data that represent analogue data, to populate a first data structure with the binary data;
• obtain a second data structure by replacing, in the first data structure, data corresponding to some of least significant bits of the binary data with substitutive bit values;
• obtain a digital fingerprint of the second data structure;
• form a binary representation of a payload, wherein the payload includes repeats of a sequence containing a palindrome based on the digital fingerprint;
• obtain a third data structure by embedding the binary representation of the payload formed in the second data structure, in place of the substitutive bit values;
• and
• store a modified data file including binary data of the third data structure.

A computerized system, wherein the system comprises

• a main memory;
• and
• processing means connected to the main memory,
• wherein
• the computerized system is configured to load computerized methods in the main memory, for the processing means to execute the loaded computerized methods and thereby cause to:
• access a data file containing binary data that represent analogue data, to populate a first data structure with the binary data;
• obtain a second data structure by replacing, in the first data structure, data corresponding to some of least significant bits of the binary data with substitutive bit values;
• obtain a digital fingerprint of the second data structure;
• form a binary representation of a payload, wherein the payload includes repeats of a sequence containing a palindrome based on the digital fingerprint;
• obtain a third data structure by embedding the binary representation of the payload formed in the second data structure, in place of the substitutive bit values;
• and
• store a modified data file including binary data of the third data structure.