US 2025/0097028 A1 · DISTRIBUTED MESSAGE AUTHENTICATION CODES FOR MULTIPLE PARTIES

Abstract

A computing system cryptographically generates an intermediate message authentication code as a function of the message and a cryptographic key assigned to a first party. The computing system also generates a first instance of an aggregate message authentication code corresponding to the message by combining the intermediate message authentication code with one or more other intermediate message authentication codes of one or more second parties. Each code of the one or more other intermediate message authentication codes is cryptographically generated as a function of the message and individual cryptographic key assigned to each of the one or more second parties.

Claims20

Dependent claims

A computing-processor-implemented method for processing a message involving distributed message authentication codes, wherein the message is cryptographically verifiable, the computing-processor-implemented method comprising:

cryptographically generating an intermediate message authentication code as a function of the message and a cryptographic key assigned to a first party;
and
generating a first instance of an aggregate message authentication code corresponding to the message by combining the intermediate message authentication code with one or more other intermediate message authentication codes of one or more second parties, wherein each code of the one or more other intermediate message authentication codes is cryptographically generated as a function of the message and individual cryptographic key assigned to each of the one or more second parties.

One or more tangible processor-readable storage media embodied with instructions for executing on one or more processors and circuits of a computing device a process for processing a message involving distributed message authentication codes, wherein the message is cryptographically verifiable, the process comprising:

cryptographically generating an intermediate message authentication code as a function of the message and a cryptographic key assigned to a first party;
and
generating a first instance of an aggregate message authentication code corresponding to the message by combining the intermediate message authentication code with one or more other intermediate message authentication codes of one or more second parties, wherein each code of the one or more other intermediate message authentication codes is cryptographically generated as a function of the message and individual cryptographic key assigned to each of the one or more second parties.

A computing system for processing a message involving distributed message authentication codes, the computing system comprising:

one or more hardware processors;
a cryptographic generator executable by the one or more hardware processors and configured to cryptographically generate an intermediate message authentication code as a function of the message and a cryptographic key assigned to a first party;
and
a reconstructor generating executable by the one or more hardware processors and configured to generate a first instance of an aggregate message authentication code corresponding to the message by combining the intermediate message authentication code with one or more other intermediate message authentication codes of one or more second parties, wherein each code of the one or more other intermediate message authentication codes is cryptographically generated as a function of the message and individual cryptographic key assigned to each of the one or more second parties.

1 more element

Dependencies are inferred from the claim text.

Distributed message authentication codes for multiple parties

Life of this patent

Distributed message authentication codes for multiple parties

Life of this patent

Abstract

Claims20