Security based on subliminal and supraliminal channels for data objects

• US 20120278627A1
• Filed: 03/25/2012
• Published: 11/01/2012
• Est. Priority Date: 09/20/2000
• Status: Active Grant

• Current Assignee: Wistaria Trading Inc.
• Original Assignee: Blue Spike, Inc.
• Inventors: Moskowitz, Scott A.
• Granted Patent: US 8,612,765 B2
• Time in Patent Office: Days
• US Class Current: 713/176
• CPC Class Codes: G06F 21/10 Protecting distributed programs or content, e.g. vending or licensing of copyrighted material protection in video systems or pay television H04N7/16 ; Digital rights management [DRM]
• CPC Class Codes: G06F 21/16 Program or content traceability, e.g. by watermarking
• CPC Class Codes: G06Q 20/3823 combining multiple encryption tools for a transaction
• CPC Class Codes: G06Q 30/06 Buying, selling or leasing transactions
• CPC Class Codes: G06T 1/0071 using multiple or alternating watermarks
• CPC Class Codes: H04K 1/00 Secret communication
• CPC Class Codes: H04L 2209/608 Watermarking
• CPC Class Codes: H04L 2463/101 applying security measures for digital rights management data processing systems or methods, specially adapted for commerce, e.g. marketing, shopping, billing, auctions or e-commerce G06Q30/00
• CPC Class Codes: H04L 2463/102 applying security measure for e-commerce data processing systems or methods, specially adapted for e-commerce G06Q30/00
• CPC Class Codes: H04L 63/0428 wherein the data content is protected, e.g. by encrypting or encapsulating the payload
• CPC Class Codes: H04L 63/12 Applying verification of the received information cryptographic mechanisms or cryptographic arrangements for data integrity or data verification H04L9/32
• CPC Class Codes: H04L 9/3236 using cryptographic hash functions

Abstract

This invention relates to security for data objects; more particularly, the present invention relates to improved security based on subliminal and supraliminal channels for data objects. In another embodiment, a method of protecting a data object comprises: steganographically encoding a subset of candidate bits in a digitized sample stream; perceptibly manipulating data in the digitized sample stream; and combining the imperceptible and perceptible data changes to create a secure/unique digital sample stream. In yet another embodiment, a method for securing a data signal comprises: preanalyzing said data signal for candidate watermark/signature bits; steganographically encoding independent data into the data signal into a subset of the candidate watermark bits, at least one time; and encoding the data signal subsequently with a perceptible technique.

Claims

1-15. -15. (canceled)

16. A method of protecting a data object comprising:

steganographically encoding a subset of candidate bits in a digitized sample stream;

perceptibly manipulating data in the digitized sample stream; and

combining the imperceptible and perceptible data changes to create a secure/unique digital sample stream.

17. The method of claim 16, wherein:

the steganographic encoding is handled by at least one of a plurality of cryptographically generated keys.

18. The method of claim 16, wherein:

the steganographic encoding is handled by cryptographically generated key pairs.

19. The method of claim 16, wherein:

the steganographic encoding is at least one digital watermark.

20. The method of claim 16, wherein:

a preanalysis of the digitized sample stream indicates a perceptibility threshold of all available candidate bits for a given sample stream.

21. The method of claim 16, wherein:

the manipulation of data is subsequent to the analysis of candidate watermark bits.

22. The method of claim 16, further comprising the step of subsequently manipulating data with a perceptible ciphering technique.

23. The method of claim 16, wherein:

the imperceptible and perceptible changes introduced into the sample stream comprise a new digitized sample stream which is uniquely identifiable for each copy generated using the same encoding steps.

24. The method of claim 16, wherein:

a relationship between the perceptible and imperceptible changes can be independently modulated with a transfer function.

25. The method of claim 24, wherein:

the relationship between the perceptible and imperceptible changes have logical relationships determined by at least one of a plurality of cryptographically generated keys and key pairs.

26. A method for securing a data signal comprising:

preanalyzing said data signal for candidate watermark/signature bits;

steganographically encoding independent data into the data signal into a subset of the candidate watermark bits, at least one time; and

encoding the data signal subsequently with a perceptible technique.

27. The method of claim 26, wherein

the step of preanalyzing said data signal for candidate watermarks/signature bits comprises measuring at least one of entropy, noise, and a subliminal channel.

28. A method of protecting a data signal comprising the steps of:

imperceptibly embedding data using a watermarking technique;

perceptibly signing the data using the receiver'"'"'s public key;

encrypting the data signal using the receiver'"'"'s public key and the private key used to watermark the signal; and

enabling a receiver to authenticate/verify (separate steps) the data signal while connected to a communications channel.

29. A method for securing a data signal comprising:

preanalyzing said data signal for candidate watermark/signature bits;

steganographically encoding independent data into the data signal into a subset of the candidate watermark bits, at least one time; and

subsequently steganographically encoding the remainder bits.

30. The method of claim 29, wherein:

the encoding is performed with at least one of a separate predetermined key and a key pair.

31. The method of claim 30, further comprising:

generating a pattern of 1s and 0s; and

embedding the pattern of 1s and 0s into the data signal.

32. The method of claim 30, further comprising:

using a third predetermined key to perceptibly encode a third set independent data, which independent data is provided to permit authentication by a user.

33. The method of claim 32, further comprising:

decoding the third set of independent data; and

authenticating the accuracy of the content of the third set of independent data as a means of authenticating the data signal.

34. The method of claim 32, further comprising:

using a fourth predetermined key to imperceptibly encode a fourth set independent data, which independent data is intended for access only by a predetermined user.

35. The method of claim 34, further comprising:

decoding the fourth set of independent data, wherein the fourth data set was encoded using a public key of a user and the decoding is accomplished using a private key of the user, said private key and public key corresponding to a public/private key-pair for the user.

36. The method of claim 33, wherein the second set of independent includes a user identifier, further comprising:

decoding the second set of independent data;

extracting the user identifier.

37. A method for protecting a data signal comprising:

using a predetermined key to imperceptibly encode a data stream with a first set of 5 independent data;

providing a housing to house said data stream; and

placing on the housing a perceptible machine-readable unique identifier.

38. The method of claim 37, wherein the perceptible machine-readable unique identifier contains information about the first set of independent data.

39. A device for securing a data signal said device comprising:

a receiver for receiving the data signal;

an analyzer to analyze said data signal for candidate watermark bits;

an encoder for steganographically encoding independent data into the data signal into a subset of the candidate watermark bits, at least one time; and

an encoder for steganographically encoding the remainder bits.

40. The device of claim 39, wherein said device includes a decoder for detecting at least one of a plurality of candidate watermark bits.

41. The device of claim 39, wherein said analyzer can determine a perceptibility threshold.

42. The device of claim 39, wherein said encoder includes a processor for processing keys.

43-55. -55. (canceled)