Secure provision of image data
First Claim
1. A method for the secure provision of image data representing an image, the method comprising:
- generating thumbnail data that represents a low-resolution version of the image represented by said image data;
encrypting payload data comprising said image data, this encryption being effected using encryption parameters comprising public data of a trusted party and an encryption key string comprising said thumbnail data; and
outputting the encrypted payload data and said encryption key string.
1 Assignment
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Accused Products
Abstract
A method and apparatus are provided for the secure provision of payload data that comprises image data representing an image. The payload data is encrypted using encryption parameters comprising public data of a trusted party and an encryption key string. The encryption key string comprises thumbnail data that represents a low-resolution version of the image represented by the image data. The encryption key string preferably also comprises at least one condition to be met before the trusted party releases a decryption key for decrypting the encrypted payload data; advantageously, the apparatus enables a user to select, via a user interface, one or more conditions for incorporation into the encryption key string. The functionality for generating the thumbnail data, for choosing the conditions to be used for the encryption key string, and for encrypting the payload data is preferably incorporated into a physical add-in module such as a PCMCIA card.
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Citations
23 Claims
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1. A method for the secure provision of image data representing an image, the method comprising:
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generating thumbnail data that represents a low-resolution version of the image represented by said image data;
encrypting payload data comprising said image data, this encryption being effected using encryption parameters comprising public data of a trusted party and an encryption key string comprising said thumbnail data; and
outputting the encrypted payload data and said encryption key string. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for the secure provision of payload data that comprises image data representing an image, the method comprising encrypting the payload data using an Identifier-Based Encryption process employing an encryption key string comprising data that represents a low-resolution version of said image.
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12. Apparatus for the secure provision of image data representing an image, the apparatus comprising:
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a first arrangement arranged to provide payload data comprising said image data;
a second arrangement arranged to generate thumbnail data that represents a low-resolution version of the image represented by said image data;
a third arrangement arranged to encrypt the payload data using encryption parameters comprising public data of a trusted party and an encryption key string comprising said thumbnail data; and
a fourth arrangement arranged to output the encrypted payload data and said encryption key string. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A physical add-in module for enabling apparatus to which the module has been added to securely provide payload data that comprises image data, the module comprising:
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first means for generating thumbnail data that represents a low-resolution version of the image represented by said image data;
second means for forming an encryption key string comprising said thumbnail data; and
at least one condition selected by a user of the apparatus via a user interface of the latter; and
third means for encrypting the payload data using encryption parameters comprising public data of a trusted party and said encryption key string. - View Dependent Claims (23)
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Specification