| CPC H04L 9/3247 (2013.01) [H04L 9/0877 (2013.01)] | 31 Claims |
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1. A method comprising:
generating a plurality of first cryptographic digital signatures associated with a set of typed characters, the set of typed characters having been input by use of a physical keyboard that is part of or in direct communication with a first processing device, wherein generating the plurality of first cryptographic digital signatures includes, for each of a plurality of keystrokes on the physical keyboard:
detecting a motion associated with a pressing of a particular key on the physical keyboard, wherein the particular key is associated with a particular character, said detecting including receiving first spatially dependent sensory data resulting from the plurality of characters being typed on the physical keyboard, by using a distributed array of sensor devices and verifying that the typed characters have been generated by a physical typing of keys on the physical keyboard, based on the first spatially dependent sensory data;
generating a first cryptographic digital signature associated with the particular character in response to detecting the motion associated with the pressing of the particular key; and
providing a typed character and an associated one of the first cryptographic digital signatures to a first verification entity located within the first processing device, for verification of a physical keystroke;
accessing a spatial mapping associated with a physical keyboard, the spatial mapping being based on second spatially-dependent sensory data associated with the physical keyboard, the second spatially-dependent sensory data being dependent on a position and orientation of the physical keyboard; and
wherein verifying that the typed characters have been generated by a physical typing of keys on the physical keyboard is based on a comparison of the first spatially-dependent sensory data and the spatial mapping.
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