Method and configuration for mutual authentication of two data processing units
First Claim
1. A method for mutual authentication of a first data processing unit and of a second data processing unit, which comprises the steps of:
- producing a first bit string in the first data processing unit;
transmitting the first bit string to the second data processing unit;
producing a second bit string and a third bit string from the first bit string and from first data using a first algorithm in the second data processing unit;
transmitting the second bit string to the first data processing unit;
producing a first authentication result and a fourth bit string from the first bit string, from the second bit string and from second data using a second algorithm in the first data processing unit;
producing a fifth bit string from the fourth bit string and from third data using a third algorithm in the first data processing unit;
transmitting the fifth bit string to the second data processing unit; and
producing a second authentication result from the third bit string, from the fifth bit string and from fourth data using a fourth algorithm in the second data processing unit.
1 Assignment
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Accused Products
Abstract
A method and a configuration are described for mutual authentication of two data processing units. The mutual authentication of two data processing units is normally carried out in two separate authentication processes, which are carried out successively. A challenge and response method is normally used. For this purpose, a first challenge is sent from a first data processing unit to a second data processing unit, which transmits a first response back. A second response is produced by the first data processing unit, and is transmitted to the second data processing unit.
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Citations
9 Claims
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1. A method for mutual authentication of a first data processing unit and of a second data processing unit, which comprises the steps of:
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producing a first bit string in the first data processing unit;
transmitting the first bit string to the second data processing unit;
producing a second bit string and a third bit string from the first bit string and from first data using a first algorithm in the second data processing unit;
transmitting the second bit string to the first data processing unit;
producing a first authentication result and a fourth bit string from the first bit string, from the second bit string and from second data using a second algorithm in the first data processing unit;
producing a fifth bit string from the fourth bit string and from third data using a third algorithm in the first data processing unit;
transmitting the fifth bit string to the second data processing unit; and
producing a second authentication result from the third bit string, from the fifth bit string and from fourth data using a fourth algorithm in the second data processing unit. - View Dependent Claims (2, 3, 4, 5)
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6. A configuration for carrying out mutual authentication, comprising:
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a first data processing unit;
a second data processing unit;
a bit string generator disposed in said first data processing unit and producing a first bit string;
a first bit string processing unit for producing a second bit string and a third bit string from the first bit string and from first data, said first bit string processing unit disposed in said second data processing unit;
a second bit string processing unit for producing a first authentication result and a fourth bit string from the first bit string, from the second bit string and from second data, said second bit string processing unit disposed in said first data processing unit;
a third bit string processing unit disposed in said first data processing unit and producing a fifth bit string; and
a fourth bit string processing unit for producing a second authentication result from the third bit string, from the fifth bit string and from fourth data, said fourth bit string processing unit disposed in said second data processing unit. - View Dependent Claims (7, 8, 9)
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Specification