Granted Patent B2

US 12,488,340 · App. 17/719,353 · Granted Dec 2, 2025

Inventors: Vladimir Tsitrin (Acton, MA); Gang Cheng (Nashua, NH)

Assignee: FMR LLC

G06Q20/389G06Q20/36G06Q20/3825G06Q20/401H04L9/50

Abstract

Claims (41)

1 . A verified address smart contract transaction signing apparatus, comprising:

at least one memory;

a component collection stored in the at least one memory;

at least one processor disposed in communication with the at least one memory, the at least one processor executing processor-executable instructions from the component collection, the component collection storage structured with processor-executable instructions, comprising:

obtain, via the at least one processor, by a hardware security module (HSM), a transaction signing request message datastructure associated with a transaction, in which the transaction signing request message datastructure is structured to specify a transaction amount, a source wallet datastructure, and a destination wallet datastructure, in which either the source wallet datastructure or the destination wallet datastructure is a verified address wallet datastructure that corresponds to a smart contract;

determine, via the at least one processor, by the HSM, owner key identification parameters associated with an owner datastructure associated with the verified address wallet datastructure;

calculate, via the at least one processor, by the HSM, a contract address for the verified address wallet datastructure as a function of a deployment factory address, a salt value for the smart contract, contract code for the smart contract, and an owner address generated using the owner key identification parameters;

validate, via the at least one processor, by the HSM, a contract deployment signature associated with the verified address wallet datastructure;

calculate, via the at least one processor, by the HSM, a transaction hash for the transaction;

sign, via at least one processor, by the HSM, the transaction hash using a transaction signing private key associated with the owner datastructure to generate a transaction signature; and

return, via at least one processor, the generated transaction signature.

2 . The apparatus of claim 1 , in which the instructions to validate the contract deployment signature associated with the verified address wallet datastructure are structured as instructions to also validate other contract deployment signatures associated with the verified address wallet datastructure, in which the other contract deployment signatures are associated with other owner datastructures in a set of owner datastructures associated with the smart contract.

3 . The apparatus of claim 1 , in which an owner private key used to generate the contract deployment signature and the transaction signing private key are the same key.

4 . The apparatus of claim 1 , in which the transaction hash is signed in accordance with a hashing algorithm utilized by the Ethereum protocol.

5 . The apparatus of claim 1 , in which the transaction signature is returned in Distinguished Encoding Rules format.

6 . A verified address smart contract transaction signing processor-readable, non-transient medium, the medium storing a component collection, the component collection storage structured with processor-executable instructions comprising:

obtain, via the at least one processor, by a hardware security module (HSM), a transaction signing request message datastructure associated with a transaction, in which the transaction signing request message datastructure is structured to specify a transaction amount, a source wallet datastructure, and a destination wallet datastructure, in which either the source wallet datastructure or the destination wallet datastructure is a verified address wallet datastructure that corresponds to a smart contract;

determine, via the at least one processor, by the HSM, owner key identification parameters associated with an owner datastructure associated with the verified address wallet datastructure;

calculate, via the at least one processor, by the HSM, a contract address for the verified address wallet datastructure as a function of a deployment factory address, a salt value for the smart contract, contract code for the smart contract, and an owner address generated using the owner key identification parameters;

validate, via the at least one processor, by the HSM, a contract deployment signature associated with the verified address wallet datastructure;

calculate, via the at least one processor, by the HSM, a transaction hash for the transaction;

sign, via at least one processor, by the HSM, the transaction hash using a transaction signing private key associated with the owner datastructure to generate a transaction signature; and

return, via at least one processor, the generated transaction signature.

7 . A verified address smart contract transaction signing processor-implemented system, comprising:

means to store a component collection;

means to process processor-executable instructions from the component collection, the component collection storage structured with processor-executable instructions including:

obtain, via the at least one processor, by a hardware security module (HSM), a transaction signing request message datastructure associated with a transaction, in which the transaction signing request message datastructure is structured to specify a transaction amount, a source wallet datastructure, and a destination wallet datastructure, in which either the source wallet datastructure or the destination wallet datastructure is a verified address wallet datastructure that corresponds to a smart contract;

determine, via the at least one processor, by the HSM, owner key identification parameters associated with an owner datastructure associated with the verified address wallet datastructure;

calculate, via the at least one processor, by the HSM, a contract address for the verified address wallet datastructure as a function of a deployment factory address, a salt value for the smart contract, contract code for the smart contract, and an owner address generated using the owner key identification parameters;

validate, via the at least one processor, by the HSM, a contract deployment signature associated with the verified address wallet datastructure;

calculate, via the at least one processor, by the HSM, a transaction hash for the transaction;

sign, via at least one processor, by the HSM, the transaction hash using a transaction signing private key associated with the owner datastructure to generate a transaction signature; and

return, via at least one processor, the generated transaction signature.

8 . A verified address smart contract transaction signing processor-implemented process, including processing processor-executable instructions via at least one processor from a component collection stored in at least one memory, the component collection storage structured with processor-executable instructions comprising:

obtain, via the at least one processor, by a hardware security module (HSM), a transaction signing request message datastructure associated with a transaction, in which the transaction signing request message datastructure is structured to specify a transaction amount, a source wallet datastructure, and a destination wallet datastructure, in which either the source wallet datastructure or the destination wallet datastructure is a verified address wallet datastructure that corresponds to a smart contract;

determine, via the at least one processor, by the HSM, owner key identification parameters associated with an owner datastructure associated with the verified address wallet datastructure;

calculate, via the at least one processor, by the HSM, a contract address for the verified address wallet datastructure as a function of a deployment factory address, a salt value for the smart contract, contract code for the smart contract, and an owner address generated using the owner key identification parameters;

validate, via the at least one processor, by the HSM, a contract deployment signature associated with the verified address wallet datastructure;

calculate, via the at least one processor, by the HSM, a transaction hash for the transaction;

sign, via at least one processor, by the HSM, the transaction hash using a transaction signing private key associated with the owner datastructure to generate a transaction signature; and

return, via at least one processor, the generated transaction signature.

Assignments (1)

Continuity (26)

References Cited (122)