The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 01, 2022
Filed:
Dec. 16, 2016
Nokia Technologies Oy, Espoo, FI;
Khan Baykaner, Upper Cambourne, GB;
Troels Roennow, Cambridge, GB;
Antti Niskanen, Espoo, FI;
Philip Gordon Derrick, Highfields Caldecote, GB;
Leo Mikko Johannes Kärkkäinen, Helsinki, FI;
Nokia Technologies Oy, Espoo, FI;
Abstract
According to an example aspect of the present invention, there is provided an apparatus comprising at least one processing core, at least one memory including computer program code, the at least one memory and the computer program code being configured to, with the at least one processing core, cause the apparatus at least to obtain a document, segmented into a first number of segments (), obtain the first number of outputs of a cryptographic operation, such that for each output, a random value and a document segment are employed to generate an input to the cryptographic operation (), build a Merkle tree based on the outputs of the cryptographic operation (), and store a top hash of the Merkle tree in a block chain ().