Encoding and decoding in accordance with steganographically-conveyed data
First Claim
Patent Images
1. A method of processing a digital content object comprised of plural portions, said portions representing audio or image information, the method comprising:
- steganographically encoding first decryption instruction data in one of said portions; and
steganographically encoding second, different decryption instruction data in another of said portions;
wherein the first decryption instruction data is needed to decrypt data from a first of said portions, and the second decryption instruction data is needed to decrypt data from a second of said portions.
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Abstract
A digital content object comprised of plural portions is steganographically encoded, with different portions of the object conveying different steganographic data. Data steganographically conveyed in a first portion can be required to access information in a second portion. Data steganographically conveyed in the second portion can be required to access information in a third portion, and so on. Such arrangements make it more difficult for hackers to gain access to electronic content.
145 Citations
14 Claims
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1. A method of processing a digital content object comprised of plural portions, said portions representing audio or image information, the method comprising:
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steganographically encoding first decryption instruction data in one of said portions; and
steganographically encoding second, different decryption instruction data in another of said portions;
wherein the first decryption instruction data is needed to decrypt data from a first of said portions, and the second decryption instruction data is needed to decrypt data from a second of said portions. - View Dependent Claims (2, 3)
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4. A method of processing a digital content object comprised of plural portions, said portions representing audio or image information, comprising:
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steganographically decoding first decryption instruction data from one of said portions;
steganographically decoding second, different decryption instruction data from another of said portions; and
using said first and second decryption instruction data to decrypt data from first and second portions of said digital content, respectively. - View Dependent Claims (5, 6)
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7. A method for use with a digital content object comprised of plural portions, said portions representing audio or image information, the procedure comprising:
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steganographically decoding first data from a first of said portions; and
using at least part of said first data in processing information from a second of said portions, said processing being necessary in order to render the audio or image information to a user. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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Specification