US 10,567,175 B2Granted

Method and system blockchain variant using digital signatures

AssigneeMastercard International Incorporated

InventorDavid J. King

Life of this patent

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Abstract

A method for using digital signatures for signing blockchain transactions includes: generating a domain key pair comprising a domain private key and a domain public key, wherein the domain public key is signed after generation; receiving a plurality of member public keys, wherein each member public key is received from an associated member of a blockchain network and is a public key in a key pair comprising the member public key and a member private key corresponding to the associated member; signing each member public key using the domain private key; receiving a transaction block from a specific member of the blockchain network, wherein the transaction block includes a plurality of blockchain transaction values and a hash signed using the member private key corresponding to the specific member; signing the received transaction block using the domain private key; and transmitting the signed transaction block.

Claims8

Dependent claims

A method for using digital signatures for signing blockchain transactions, comprising:

generating, by a generation module of a processing server, a domain key pair comprising a domain private key and a domain public key, wherein the domain public key is signed after generation;
receiving, by a receiving device of the processing server, a plurality of member public keys;
signing, by a signing module of the processing server, each member public key of the plurality of member public keys using the domain private key;
receiving, by the receiving device of the processing server, a transaction block from a specific member of a blockchain network;
electronically transmitting, by the transmitting device of the processing server, each signed member public key to one or more members of the blockchain network;
receiving, by the receiving device of the processing server, a new transaction block and a signed second hash value from the specific member of the blockchain network;
signing, by the signing module of the processing server, the received new transaction block using the domain private key;
and
electronically transmitting, by the transmitting device of the processing server, the signed new transaction block for validation of the blockchain transactions by a member of the blockchain network.

6 more elements

A system for using digital signatures for signing blockchain transactions, comprising:

a transmitting device of a processing server;
a generation module of the processing server configured to generate a domain key pair comprising a domain private key and a domain public key, wherein the domain public key is signed after generation;
a receiving device of the processing server configured to receive a plurality of member public keys;
and
a signing module of the processing server configured to sign each member public key of the plurality of member public keys using the domain private key, wherein
the receiving device of the processing server is further configured to receive a transaction block from a specific member of a blockchain network,
the transmitting device of the processing server is further configured to electronically transmit each signed member public key to one or more members of the blockchain network,
the receiving device of the processing server is further configured to receive a new transaction block and a signed second hash value from the specific member of the blockchain network,
the signing module of the processing server is further configured to sign the received new transaction block using the domain private key, and
the transmitting device of the processing server is further configured to electronically transmit the signed new transaction block for validation of the blockchain transactions by a member of the blockchain network.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/197,568Filed 21 Nov 2018 · continuation
Priority: 21 Dec 2015
Published: US 2019/0097813 A128 Mar 2019
Granted: 18 Feb 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

H04L 9/3247
Including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity…:…
H04L 9/3239
Using cryptographic hash functions: involving non-keyed hash functions, e.g. modification detection codes [MDCs], MD5, SHA or RIPEMD
H04L 9/3268
Involving certificates, e.g. public key certificate [PKC] or attribute certificate [AC]; Public key infrastructure [PKI] arrangements: using…
H04L 63/045
Wherein the data content is protected, e.g. by encrypting or encapsulating the payload: wherein the sending and receiving network entities apply…

Family

Application14/976,331Parent of this continuation · filed 21 Dec 2015
Application15/935,455Parent of this continuation · filed 26 Mar 2018
US 9,948,467 B2Parent of this continuation · filed 17 Apr 2018
US 2019/0097813 A1Pre-grant publication · published 28 Mar 2019
US 10,171,248 B2Parent of this continuation
US 2017/0180134 A1Published application
US 2018/0212783 A1Published application
US 10,567,175 B2This patent

From the US filing history. Foreign family members aren’t listed.