Abstract: A system and method for wallet recovery verification are provided. The system includes a processor of a wallet verifier node connected to an at least one wallet operator entity node and to at least one backup provider entity node; and a memory on which are stored machine-readable instructions that when executed by the processor, cause the processor to: receive, from the at least one wallet operator entity node backup data comprising (X, C, ?), where C is a ciphertext encrypting a secret key of the at least one wallet operator entity node, w is a zero-knowledge proof and X is an address of the wallet being backed up; execute a verification algorithm based on the (X, C, ?), and a public key N received from the at least one backup provider entity node; and derive the address X and verify that a combination of a primary address with a seed produced the derived address.

Abstract: A method and system for protecting of digital assets within the blockchain by approval revocations. The method comprises detecting an approval of a transaction by a least one user node connected to the approval node over a blockchain network; generating a revoke transaction comprising un-approval of the transaction; monitoring a smart contract associated with the transaction to determine a risk factor; and responsive to the risk factor exceeding a pre-determined risk level threshold, triggering an execution of the revoke transaction.

Abstract: Arrangements for use in garbling a circuit in a memory-limited environment, comprising: initializing auxiliary garbling data comprising a plurality of data features associated with execution of garbling operations for the entirety of the circuit being. initializing a plurality of input gates and a plurality of state gates; generating a circuit slice for an update function; setting the plurality of state gates as a plurality of new output-state-gates; generating a circuit slice for a finalization function, wherein the finalization function represented by a sub-circuit, the outputs of which are terminal gates; garbling the circuit slice generated for the finalization function to create a garbled circuit slice; and transmitting the garbled circuit slice substantially no later than completion of its creation; wherein initializing auxiliary garbling data is performed only once for the circuit and prior to initializing the plurality of input gates and the plurality of state gates.

Abstract: A system and method for processing garbled circuit techniques in memory-limited environments. The method includes: initializing a plurality of input gates and a plurality of state gates; generating a circuit slice for an update function; setting the plurality of state gates as a plurality of new output-state-gates; and generating a circuit slice for a finalization function, wherein the finalization function represented by a sub-circuit, the outputs of which are terminal gates.

Abstract: In some implementations, the device may include receiving a command to initiate a crypto-asset transaction by each secure module of a plurality of secure modules. In addition, the device may include calculating by each secure module, a destination address of a trading platform using a respective secure trading platform connector included in each secure module. The device may include signing the crypto-asset transaction using a respective secure wallet with an environment-specific key, thereby enabling execution the a crypto-asset transaction by a trading platform addressed by the calculated destination address.

Abstract: A system and method for securing crypto-asset transactions. The method includes sharding a wallet private key such that each shard of the wallet private key is distributed to a different secure module; generating signatures by each of the different secure modules based on a respective shard of the sharded wallet private key and obtained trading platform credentials; and verifying the crypto-asset transaction when a predetermined threshold of the generated signatures are determined to match each other.

Abstract: A system and method for processing garbled circuit techniques in memory-limited environments. The method includes: initializing a plurality of input gates and a plurality of state gates; generating a circuit slice for an update function; setting the plurality of state gates as a plurality of new output-state-gates; and generating a circuit slice for a finalization function, wherein the finalization function represented by a sub-circuit, the outputs of which are terminal gates.

Abstract: A system and method for securing crypto-asset transactions. The method includes sharding a wallet private key such that each shard of the wallet private key is distributed to a different secure module; generating signatures by each of the different secure modules based on a respective shard of the sharded wallet private key and obtained trading platform credentials; and verifying the crypto-asset transaction when a predetermined threshold of the generated signatures are determined to match each other.