Granted Patent B2

US 7,260,215 · App. 10/233,408 · Granted Aug 21, 2007

Abstract

Claims (43)

1. A method for secure real-time distribution of digital media content over a network comprising:

encrypting payload digital media content using a first encryption key in a first data processor;

sending said payload digital media content encrypted using said first encryption key to a second data processor;

encrypting said payload digital media content encrypted using said first encryption key using a second encryption key in said second data processor; and

sending said payload digital media content encrypted using said first encryption key and said second encryption key to a third data processor;

providing said first and said second keys to generate a decryption key having the following properties:

a) the decryption key is usable to obtain said payload digital media content from said digital media content encrypted using said first and said second encryption keys, and

b) the decryption key is unusable to retrieve either of said first or said second encryption keys, said decryption key being for sending for decryption at said third data processor;

wherein said payload digital media content consists of one of:

i. video content

ii. audio content, and

iii. executable code

wherein said encryption comprises: encoding said payload digital media content into an array having indices; and performing a permutation on at least one of the indices of said array and wherein said encryption keys comprise information about said permutation of said indices;

wherein said performing a permutation on at least one of the indices comprises performing said permutation separately on each one of the dimensions of said indices.

2. The method of claim 1 , comprising generating said decryption key, for obtaining said payload digital media content at said third processing device.

3. The method of claim 1 , further comprising generation of secret digital media content and wherein said payload digital media content is generated from said secret digital media content.

4. The method of claim 3 , wherein said payload digital media content is generated from said secret digital media content using encryption.

5. The method of claim 3 , wherein said payload digital media content is generated from said secret digital media content using a cryptographic encoding method.

6. The method of claim 3 , wherein said payload digital media content is a key used for encoding said secret digital media content.

7. The method of claim 3 , wherein said secret digital media content comprises at least one of the following: software; binary software data; software source code; video; audio; document; text; and multimedia.

8. The method of claim 1 , wherein said encoding comprises at least one of the following: encryption; signing; padding; and error correction code.

9. The method of claim 1 , wherein said array is one of the following: a two dimensional matrix; a multi dimensional array of more than two dimensions; and a multi dimensional array where each dimension is of size two.

10. The method of claim 1 , wherein said array is one of the following:

a binary array; a hexadecimal array; a block array; a sparse array; an octal array; and a decimal array.

11. The method of claim 1 , wherein said method further comprise at least one additional step of: encrypting said encrypted payload digital media content with an additional encryption key; and sending said encrypted payload digital media content encrypted with said additional encryption key to an additional data processor.

12. The method of claim 11 , comprising generating a decryption key based on said first encryption key and on said second encryption key, and on said additional encryption keys, wherein said decryption key is operable to compute said payload digital media content by decrypting said payload digital media content encrypted with said additional encryption keys.

13. A method for encryption and distributing payload digital media content, executed using at least one data processor, the method comprising:

encoding, at a first network location, said payload digital media content into an array;

performing a first permutation, at said first network location, on at least one of the indices of said array, said first permutation being performed using at a first encryption key comprising information about said first permutation of said indices;

sending said payload digital media content encrypted using said first encryption key to a second network location;

performing a second permutation, at said second network location, on at least one of the indices of said array, said second permutation being performed using a second encryption keys comprising information about said second permutation of said indices;

generating a decryption key for restoring said payload digital media content from said first and second permutations; and

 sending said decryption key to a third network location;

wherein said payload digital media content consists of one of:

i. video content

ii. audio content, and

iii. executable code;

 wherein said performing a permutation on at least one of the indices comprises performing said permutation separately on each one of the dimensions of said indices.

14. The method of claim 13 , wherein said encoding comprises at least one of the following: encryption; signing; padding; and error correction encoding.

15. The method of claim 13 , wherein said array is one of the following: a two dimensional matrix; a multi dimensional array of more than two dimensions; and a multi dimensional array where each dimension is of size two.

16. The method of claim 13 , wherein said array is one of the following: a binary array; a hexadecimal array; a block array; a sparse array; an octal array; and a decimalarray.

17. The method of claim 13 , wherein said permutation is selected such as to require a unique decryption key for each payload.

18. The method of claim 13 , wherein said encoding comprises a stage of pre-encoding data manipulation to produce a randomized plaintext.

Assignments (26)