Encryption protocol
First Claim
1. A method for transferring information data acquired by a digital pen to a recipient, the method comprising:
- generating, in the digital pen, a random number to be associated with an information data transmission, whenever non-repudiation of said information data transmission is to be provided, before the information data of that transmission is acquired;
signing, in the digital pen, said random number using a private key before said information data is acquired; and
sending said information data and said signed random number to said recipient, when said information data is acquired.
3 Assignments
0 Petitions
Accused Products
Abstract
The present invention relates to a method, a system and a computer-readable medium storing computer-executable components in connection with transfer of information data to a recipient. The invention is based on the idea that generation of random number data and the calculation of digital signatures are performed before information data is accessible to a digital pen. Since asymmetric encryption of data is a demanding operation for said digital pen to perform in terms of processing power, a lot of time can be saved if the generation of random number data and asymmetric encryption of said random number data is performed in advance, when the pen is in an idle, non-communicating mode, for example during battery loading of the pen or when the pen is lifted from the position-coded paper. This alleviates delay times when the pen is in its communicating mode.
-
Citations
19 Claims
-
1. A method for transferring information data acquired by a digital pen to a recipient, the method comprising:
-
generating, in the digital pen, a random number to be associated with an information data transmission, whenever non-repudiation of said information data transmission is to be provided, before the information data of that transmission is acquired; signing, in the digital pen, said random number using a private key before said information data is acquired; and sending said information data and said signed random number to said recipient, when said information data is acquired. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A system for transferring information data acquired by a digital pen from the digital pen to a recipient, wherein the digital pen includes:
-
means arranged to generate, in the digital pen, a random number to be associated with an information data transmission, whenever non-repudiation of such information data transmission is to be provided, before the information data of that transmission is acquired; means arranged to sign, in the digital pen, said random number using a private key before said information data is acquired; and means arranged to send said information data and said signed random number to said recipient, when said information data is acquired. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A computer-readable medium encoded with computer-executable for transferring information data acquired by a digital pen to a recipient, the instructions causing the digital pen to execute the steps of:
-
generating, in the digital pen a random number to be associated with an information data transmission, whenever non-repudiation of said information data transmission is to be provided, before the information data of that transmission is acquired; signing, in the digital pen, said random number using a private key before said information data is acquired; and sending said information data and said signed random number to said recipient, when said information data is acquired.
-
Specification