Security token and authentication system
First Claim
Patent Images
1. A security token comprising:
- a tactile sensing user interface being configured to receive a user-encoded secret, wherein the user-encoded secret is a tactile symbol, and the tactile sensing user interface is configured to capture tactile patterns and provide a tactile pattern data stream which represents the tactile symbol and comprises a sequence of said tactile patterns to the decoding unit;
a decoding unit configured to generate a decoded secret by decoding the user-encoded secret and by applying a private inverse transfer function to the tactile pattern data stream, wherein the private inverse transfer function is an inverse of a private transfer function applied by the user to encode the tactile symbol;
a comparison unit being configured to compare the decoded secret with a copy of the user-encoded secret stored in the security token in order to verify authenticity of the user;
and a release foil with printed tactile key information configured to define the private inverse transfer function.
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Abstract
Techniques are provided for entering a secret into a security token using an embedded tactile sensing user interface with the purpose of verifying the secret against a stored representation of the same secret. In particular, an embodiment of the security token according to the invention comprises a tactile sensing user interface being arranged to receive a user-encoded secret, a decoding unit being arranged to generate a decoded secret by decoding the user-encoded secret, a comparison unit being arranged to compare the decoded secret with a copy of the secret stored in the token in order to verify the authenticity of a user. Thereby, the security token provides on-card matching functionality.
39 Citations
25 Claims
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1. A security token comprising:
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a tactile sensing user interface being configured to receive a user-encoded secret, wherein the user-encoded secret is a tactile symbol, and the tactile sensing user interface is configured to capture tactile patterns and provide a tactile pattern data stream which represents the tactile symbol and comprises a sequence of said tactile patterns to the decoding unit; a decoding unit configured to generate a decoded secret by decoding the user-encoded secret and by applying a private inverse transfer function to the tactile pattern data stream, wherein the private inverse transfer function is an inverse of a private transfer function applied by the user to encode the tactile symbol; a comparison unit being configured to compare the decoded secret with a copy of the user-encoded secret stored in the security token in order to verify authenticity of the user; and a release foil with printed tactile key information configured to define the private inverse transfer function. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification