Authentication device and method
First Claim
1. An apparatus for generating intermediate cryptogram data corresponding to a dynamic password for a first cryptographic scheme, the intermediate cryptogram data being suitable for display using a device designed for a second, incompatible cryptographic scheme for generating a password, the apparatus comprising:
- a communications interface for communicating with a said device; and
a processor coupled to a memory, the memory storing processor control code to control the processor, when running, to;
generate a dynamic password according to the first cryptographic scheme; and
generate intermediate cryptogram data from said dynamic password, the intermediate cryptogram data being suitable for outputting to the said device so that, when the said device processes said intermediate cryptogram data according to the second, incompatible cryptographic scheme to generate a password, the said device outputs said dynamic password generated according to the first cryptographic scheme.
1 Assignment
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Accused Products
Abstract
An apparatus for generating intermediate cryptogram data corresponding to a dynamic password for a first cryptographic scheme, the intermediate cryptogram data being suitable for display using a device designed for a second, different cryptographic scheme, the apparatus including: a communications interface for communicating with a said device; and a processor coupled to a memory, the memory storing processor control code to control the processor, when running, to: generate a dynamic password according to the first cryptographic scheme; and generate intermediate cryptogram data corresponding to said dynamic password, the intermediate cryptogram data being suitable for outputting to the said device so that, when the said device processes said intermediate cryptogram data according to the second cryptographic scheme, the said device generates data suitable for displaying said dynamic password.
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Citations
21 Claims
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1. An apparatus for generating intermediate cryptogram data corresponding to a dynamic password for a first cryptographic scheme, the intermediate cryptogram data being suitable for display using a device designed for a second, incompatible cryptographic scheme for generating a password, the apparatus comprising:
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a communications interface for communicating with a said device; and a processor coupled to a memory, the memory storing processor control code to control the processor, when running, to; generate a dynamic password according to the first cryptographic scheme; and generate intermediate cryptogram data from said dynamic password, the intermediate cryptogram data being suitable for outputting to the said device so that, when the said device processes said intermediate cryptogram data according to the second, incompatible cryptographic scheme to generate a password, the said device outputs said dynamic password generated according to the first cryptographic scheme. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of generating intermediate cryptogram data corresponding to a cryptogram according to a first cryptographic scheme, the data being suitable for display on a device designed for a second, incompatible cryptographic scheme for generating a password, the method comprising:
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generating, by a computer processor, a dynamic password according to the first cryptographic scheme; and generating, by a computer processor, intermediate cryptogram data from said dynamic password, said intermediate cryptogram data being suitable for outputting to a said device so that, when the said device processes said intermediate cryptogram data according to the second, incompatible cryptographic scheme to generate a password, the said device outputs said dynamic password generated according to the first cryptographic scheme. - View Dependent Claims (18, 19)
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20. A method of generating intermediate cryptogram data corresponding to a cryptogram according to a first cryptographic scheme, the data being suitable for display on a device designed for a second, incompatible cryptographic scheme for generating a password, the method comprising:
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generating, by a computer processor, a dynamic password according to the first cryptographic scheme; generating, by a computer processor, intermediate cryptogram data from said dynamic password, such that when a said device processes said intermediate cryptogram data according to the second, incompatible cryptographic scheme to generate a password, the said device outputs said dynamic password generated according to said first cryptographic scheme; and transmitting said intermediate cryptogram data through a communications interface to said device.
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21. An apparatus for generating intermediate cryptogram data corresponding to a dynamic password for a first cryptographic scheme, the intermediate cryptogram data being suitable for display using a device designed for a second, incompatible cryptographic scheme for generating a password, the apparatus comprising:
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a communications interface for communicating with the device; and a processor coupled to a memory, the memory storing processor control code to control the processor, when executed, to; generate a dynamic password according to the first cryptographic scheme; apply a decimalization process to the dynamic password to generate a decimal dynamic password; apply a reverse decimalization process of the second, incompatible cryptographic scheme to the decimal dynamic password to generate binary data; and apply a reverse compression process of the second, incompatible cryptographic scheme to the binary data to generate intermediate cryptogram data corresponding to the dynamic password, the intermediate cryptogram data being suitable for outputting to the device so that, when the device processes the intermediate cryptogram data according to the second, incompatible cryptographic scheme, the device generates data suitable for displaying the dynamic password.
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Specification