Pre-Grant Publication Number: 20110093714
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Prior Art Detail
Summary / Description
| Summary / Description | An apparatus for authenticating memory space of an authorized accessory of a device includes an integrated circuit. |
Basic Information
| Type of Prior Art | Issued Patents - US |
| Country | United States of America |
| Patent/Application # | 7194629 |
| Kind Code | United States (US) - Reexamination Certificate Seco... - B2 |
| Patentee Name | SILVERBROOK RESEARCH PTY LTD |
| Relevant Pages, Columns, or Lines | abstrac, C5, L28, C11, L23 |
| URL | |
| Filing Date | March 20, 2007 |
| Additional Information | |
Notes / To Do
| Notes | |
Excerpt
Excerpt An apparatus for authenticating memory space of an authorized accessory of a device includes an integrated circuit. The integrated circuit is configured to define two secret keys K.sub.1 and K.sub.2, a random function which returns a random number R and a first parameter being a function of the random number R using the secret key K.sub.1 of the integrated circuit and to define a test function operable on data using the secret key K.sub.2 of the integrated circuit to return a one or a zero.
As alternative an asymmetric algorithm could be used. An asymmetric encryption algorithm is one where: the encryption function E relies on key K.sub.1, the decryption function D relies on key K.sub.2, K.sub.2 cannot be derived from K.sub.1 in a reasonable amount of time, and K.sub.1 cannot be derived from K.sub.2 in a reasonable amount of time. |
Relevance
Claims
1
Relevance
Patent describes a system that can use asymmetric cryptography for verifying that an accessory for a device is authentic. Seems as if, in an embodiment using asymmetric cryptography, it operates in a similar way.
Patent describes a system that can use asymmetric cryptography for verifying that an accessory for a device is authentic. Seems as if, in an embodiment using asymmetric cryptography, it operates in a similar way.
Claim Chart
Some
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