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Get Perfect Results with Premium 312-82 Dumps Updated 52 Questions [Q31-Q51]

Get Perfect Results with Premium 312-82 Dumps Updated 52 Questions [Q31-Q51]

January 26, 2025 admin312-82, EC-COUNCIL312-82 exam preview, 312-82 latest study questions ebook, 312-82 reliable exam labs, 312-82 reliable exam questions explanations, 312-82 test preparation, 312-82 valid exam test, 312-82 valid study guide ppt, new 312-82 test certification costLeave a Comment on Get Perfect Results with Premium 312-82 Dumps Updated 52 Questions [Q31-Q51]

Get Perfect Results with Premium 312-82 Dumps Updated 52 Questions

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EC-COUNCIL 312-82 Exam Syllabus Topics:

Topic Details
Topic 1
  • Open Source: This module assesses the understanding of software developers and IT professionals concerning open-source blockchain frameworks. It explores the advantages of open-source development in blockchain, such as fostering innovation, transparency, and collaboration, as well as how professionals can contribute to or adopt these open-source solutions.
Topic 2
  • Bitcoin: This module zeroes in on Bitcoin, the first and most prominent cryptocurrency. It tests the understanding of blockchain developers about how Bitcoin works, its impact on the financial landscape, and the challenges and opportunities related to its adoption as a digital currency.
Topic 3
  • Ethereum: This part of the exam evaluates the expertise of blockchain developers and IT professionals in Ethereum, the leading platform for decentralized applications (dApps).
Topic 4
  • Decentralized Applications (dApps): This final section examines the skills of software developers in creating decentralized applications (dApps). It discusses the design, development, and deployment of dApps and their potential to revolutionize traditional business models by offering more secure, transparent, and efficient solutions.
Topic 5
  • Blockchain as a Service (BaaS): This section measures the skills of IT architect in deploying Blockchain as a Service (BaaS). It outlines how BaaS enables organizations to create and manage blockchain applications without building their own infrastructure, simplifying the adoption and scaling of blockchain technologies.
Topic 6
  • Blockchain’s Cryptocurrency Assets: This segment tests the proficiency of professionals like cryptocurrency traders in the area of cryptocurrency assets. It examines the role of blockchain in creating and managing digital currencies like Bitcoin and Ethereum, as well as its broader impact on the financial world.
Topic 7
  • Financial Applications: This section assesses the understanding of blockchain applications within financial services for professionals such as fintech developers and covers how blockchain is reshaping areas like payments, remittances, and trading by providing secure, transparent, and efficient alternatives to conventional methods.
Topic 8
  • Introduction: This part of the exam gauges the basic knowledge of blockchain technology for professionals like financial analysts and covers key blockchain concepts such as distributed ledgers, consensus mechanisms, and smart contracts, forming the basis for more advanced topics covered later.
Topic 9
  • Security in Blockchains: This part assesses the knowledge of cybersecurity experts, IT auditors, and compliance professionals in securing blockchain systems.

 

Q31. According to FinCEN what dictates the obligations of money transmitters?

 
 
 
 
According to theFinancial Crimes Enforcement Network (FinCEN), the obligations of money transmitters are determined primarily bythe business modelof the company. FinCEN regulations stipulate that companies engaged in money transmission services must comply with Anti-Money Laundering (AML) and Counter- Terrorism Financing (CTF) regulations, based on how they conduct their business rather than on their industry designation or self-description.
Key Details:
* Regulatory Basis: FinCEN’s guidelines are focused on the activities of the business-specifically, whether it facilitates the transfer of money or currency on behalf of others. This regulatory approach ensures that companies involved in money transmission are subject to appropriate oversight, regardless of their industry.
* Activities Over Labels: Even if a company does not advertise itself as a money transmitter, it may still be subject to FinCEN regulations if its business operations fit the criteria for money transmission services.
* Compliance Requirements: Money transmitters must register with FinCEN and implement AML/CTF measures to prevent illicit activities, aligning their compliance obligations with the nature of their operations.
Thus,C. The business modelis the correct answer, as FinCEN focuses on the activities a company performs when determining regulatory obligations.

Q32. Distributed ledger technology or DLT is a word used to describe technologies which store, distribute and facilitate the exchange of value between users, either privately or publicly.

 
 
 
 
Distributed Ledger Technology (DLT)is the correct term used to describe technologies that store, distribute, and facilitate the exchange of value between users, either privately or publicly. DLT encompasses various types of systems, including blockchains, that operate in a decentralized manner to record and synchronize data across multiple locations.
Key Details:
* Definition of DLT: DLT is a digital ledger system that allows data to be stored across multiple nodes in a network. It ensures that all copies of the ledger are updated and synchronized, providing a secure and transparent way to record transactions without needing a centralized authority.
* DLT vs. Blockchain: While blockchain is a form of DLT, not all DLTs are blockchains. For example, Directed Acyclic Graphs (DAGs) and Hashgraphs are also types of DLTs but do not necessarily use blocks or chains to organize data.
* Private and Public Implementations: DLTs can be permissioned (private) or permissionless (public), enabling various use cases from enterprise solutions to decentralized public networks.
Therefore,B. Distributed Ledger Technologyis the correct answer, as it broadly defines the technology for storing and distributing data across decentralized networks.

Q33. _________change the blockchain layout from a linearly sequential model.

 
 
 
 
Tree Chainsmodify the standard blockchain structure from a linear sequence to a tree-like structure, where blocks can have multiple branches instead of forming a single sequential chain. This structure can improve scalability and enable parallel processing, as multiple chains can be validated simultaneously.
Key Details:
* Tree Structure: In tree chains, blocks can have multiple child blocks, which allows transactions to be processed across several branches concurrently. This reduces bottlenecks associated with linear block validation and enhances throughput.
* Benefits Over Linear Chains: Traditional blockchain models process blocks in a strict sequence. Tree chains allow for more flexibility and higher transaction throughput, as multiple blocks can be validated simultaneously across different branches.
* Use Cases: This structure is advantageous for complex applications that require parallel transaction processing, such as large-scale blockchain networks or systems needing high transaction speeds.
Thus,D. Tree chainsis the correct answer, as it refers to the blockchain model that diverges from a linear structure.

Q34. ______is a computer program that runs stop a blockchain and embedded within it are governance and business logic rules

 
 
 
 
Decentralized Applications (Dapps)are applications that run on a blockchain network and include embedded governance and business logic rules. Unlike traditional applications, Dapps are decentralized, meaning they operate on a peer-to-peer network rather than a centralized server, leveraging smart contracts to automatically enforce rules and protocols without intermediaries.
Key Details:
* Characteristics of Dapps: Dapps are open-source, operate autonomously, and store data on a blockchain. They utilize smart contracts to handle various functions, from transaction processing to enforcing governance rules and executing business logic.
* Smart Contracts: The embedded rules within Dapps are typically coded as smart contracts, which are self-executing contracts with the terms of the agreement directly written into lines of code. This ensures that all transactions and operations within the Dapp are transparent, immutable, and automatically enforced.
* Use Cases: Dapps are commonly found in areas such as decentralized finance (DeFi), gaming, supply chain management, and social media, offering users more control and transparency compared to traditional applications.
In conclusion,Dapps (A)is the correct answer as it refers to computer programs running on a blockchain with embedded governance and business logic rules.

Q35. ________can support up to 10-14 transactions per second.

 
 
 
 
Ethereumcurrently supports a transaction throughput of approximately10-14 transactions per second (TPS)
. This transaction speed is a result of Ethereum’s design, which balances decentralization and security, albeit at the cost of scalability. This TPS rate is consistent across the Ethereum network prior to its upgrade to Ethereum 2.0, which aims to increase scalability through sharding and Proof of Stake.
Key Details:
* Limitations of Current Throughput: Ethereum’s TPS rate is due to limitations in its consensus mechanism (formerly Proof of Work, now Proof of Stake) and block size, which prioritize security over transaction speed.
* Comparison with Other Networks: Bitcoin, for example, supports around 3-7 TPS, while other networks like Solana or Binance Smart Chain support significantly higher TPS. Ethereum’s TPS may increase as Ethereum 2.0 is fully implemented, which aims to improve its scalability.
* Impact on Decentralized Applications (DApps): Ethereum’s transaction capacity impacts DApps running on the network, as higher usage can lead to congestion and increased transaction fees(gas fees).
The upcoming upgrades are intended to alleviate these issues and enhance performance.
Therefore,D. Ethereumis the correct answer, as it supports approximately 10-14 TPS in its current form.

Q36. A________ is a blockchain where participants of the network are already known and trusted.

 
 
 
 
APermissioned ledgeris a blockchain where participants are known and trusted, and access to the network is restricted to authorized entities. Permissioned ledgers are commonly used in enterprise and consortium settings where privacy, compliance, and control over data are essential.
Key Details:
* Controlled Access: In a permissioned ledger, only pre-approved participants can validate transactions and participate in the consensus process. This model ensures that all network members are identified and trusted, which is ideal for environments requiring a higher level of control and privacy.
* Use Cases: Permissioned ledgers are widely used in industries such as finance, healthcare, and supply chain, where it’s important to know and trust participants due to regulatory or operational needs.
* Contrast with Permissionless Ledgers: Unlike permissionless ledgers (such as Bitcoin), which allow anyone to join and participate in the network, permissioned ledgers restrict participation to entities that meet specific criteria.
Thus,A. Permissioned ledgeris the correct answer, as it describes a blockchain network where participants are known and trusted.

Q37. When you purchase bitcoins, how are they stored?

 
 
 
 
When you purchase bitcoins, they are storedin a bitcoin wallet. A bitcoin wallet is a digital tool that stores the cryptographic keys necessary to access and manage your Bitcoin holdings. It does not store physical bitcoins but instead holds the keys to access them on the blockchain.
Key Details:
* Functionality of Bitcoin Wallets: Bitcoin wallets manage private and public keys. The private key is required to sign transactions, while the public key generates addresses that allow for receiving bitcoins.
Without access to the private key, the user cannot spend or transfer their bitcoins.
* Types of Bitcoin Wallets: Wallets can be software-based (such as mobile or desktop apps) or hardware- based (physical devices like a Ledger or Trezor). There are also online (custodial) wallets provided by exchanges, but these still technically store bitcoins within a wallet.
* Not a Physical Storage: Bitcoins do not exist as physical files or objects. The wallet is an interface that interacts with the blockchain, where the actual records of ownership are maintained.
Thus,D. In a bitcoin walletis the correct answer, as bitcoins are stored in wallets that hold the keys necessary to interact with the Bitcoin blockchain.

Q38. _______implements the interledger protocol, which facilitates interoperability across different distributed and non-distributed ledger networks.

 
 
 
 
The answer is(C) Quilt.
Hyperledger Quilt is a Java implementation of the Interledger Protocol (ILP). ILP is designed to transfer value across different ledgers, whether they are distributed ledgers (like blockchains) or traditional non-distributed ledgers.
Here’s why the other options aren’t the best fit:
* Composer:Hyperledger Composer was a tool for building blockchain applications, but it has been deprecated.
* Cello:Hyperledger Cello aims to provide a modular blockchain platform, making it easier to deploy and manage blockchain networks.
* Caliper:Hyperledger Caliper is a benchmarking tool used to measure the performance of different blockchain implementations.
Quilt’s primary function is to enable interoperability between different ledger systems, which is crucial for the broader adoption and integration of blockchain technology.

Q39. What type of DApp uses another blockchain such as Ethereum?

 
 
 
 
AType II DAppis characterized by utilizing another blockchain, such as Ethereum, as its underlying platform. Type II DApps generally operate as protocols or platforms themselves and rely on a foundational blockchain (Type I) for their infrastructure. This categorization enables Type II DApps to leverage the security, decentralization, and functionality of the underlying blockchain while adding unique features or protocols.
Key Details:
* Relationship with Type I DApps: Type I DApps are foundational platforms with their own blockchain, such as Ethereum. Type II DApps are built on these foundational platforms, creating additional protocols or applications that depend on the Type I blockchain.
* Examples of Type II DApps: Protocols like the ERC-20 token standard on Ethereum are examples of Type II DApps, as they rely on Ethereum’s blockchain but provide their own set of functionalities that can be used by other applications.
* Benefits of Using Existing Blockchains: By using established blockchains, Type II DApps benefit from existing infrastructure and security while extending the blockchain’s capabilities.
Therefore,C. Type IIis the correct answer, as it represents DApps built on another blockchain like Ethereum.

Q40. What is the primary benefit to patients of blockchain in the healthcare are industry?

 
 
 
 
The primary benefit of blockchain in the healthcare industry for patients istotal control over personal health records. Blockchain enables secure, decentralized storage of health data, allowing patients to control access to their information and share it with healthcare providers as needed.
Key Details:
* Data Ownership and Privacy: Blockchain gives patients the ability to own and manage their health records. They can grant or revoke access to different healthcare providers, ensuring that only authorized personnel have access to their data.
* Improved Security: Health records stored on a blockchain are encrypted and decentralized, making them resistant to tampering and unauthorized access. This enhances patient privacy and reduces the risk of data breaches.
* Interoperability and Accessibility: Blockchain facilitates seamless sharing of health records across different healthcare providers and systems, improving coordination and care continuity without compromising data integrity.
Therefore,B. Total control over personal health recordsis the correct answer, as it represents a significant advantage for patients in managing their healthcare information securely.

Q41. A____does not result in a new chain and does not require client nodes to upgrade.

 
 
 
 
Asoft forkis a change to a blockchain protocol that is backward-compatible, meaning it does not result in the creation of a new chain and does not require all client nodes to upgrade. Nodes that do not upgrade can still participate in the network, although they may not have access to all new features introduced by the soft fork.
Key Details:
* Backward Compatibility: In a soft fork, updated nodes enforce the new rules, while non-updated nodes continue to follow the older protocol but remain part of the same blockchain. This contrasts with hard forks, where incompatibility leads to the creation of a new chain.
* Use Cases: Soft forks are commonly used to implement protocol upgrades or adjustments that do not fundamentally alter the structure of the blockchain, such as increasing block size limits or adding new features that are optional.
* Examples: An example of a soft fork is the Segregated Witness (SegWit) update on the Bitcoin blockchain, which was implemented to increase block capacity without splitting the chain.
Thus,B. Soft forkis the correct answer, as it refers to a backward-compatible update that does not require a new chain or mandatory upgrades from all nodes.

Q42. A________represents a transfer of value from one address to another, Transaction in a blockchain network can be defined also as a record of an event or the ”transfer of value from one account to another”

 
 
 
 
In blockchain terminology, atransactionrepresents the transfer of value from one address to another. Each transaction is recorded on the blockchain as an immutable entry, often representing a movement of digital assets or a record of an event.
Key Details:
* Nature of Transactions: A blockchain transaction involves a digital asset or token being sent from one blockchain address (wallet) to another. The transaction is broadcast to the network, validated by nodes, and then recorded on the blockchain ledger.
* Transfer of Value: Blockchain transactions serve as proof of the transfer of value, which could represent cryptocurrency movement, digital asset exchange, or a specific record of an event, depending on the blockchain’s purpose.
* Inclusion in Blocks: Each transaction is grouped into blocks, which are then cryptographically linked together, forming the blockchain. This ensures all transactions are secure, traceable, and verifiable.
Thus,D. Transactionis the correct answer, as it describes the fundamental concept of transferring value on a blockchain.

Q43. The Financial Action Task force defines virtual asset service providers as companies that (choose two):

 
 
 
 
According to theFinancial Action Task Force (FATF),Virtual Asset Service Providers (VASPs)are entities or companies that facilitate activities related to virtual assets. Specifically, VASPs include businesses thatexchange virtual assets for fiat currencyandtransfer virtual assets. These activities are regulated to prevent money laundering, terrorist financing, and other illicit activities.
Key Details:
* Exchange of Virtual Assets for Fiat Currency: VASPs often act as intermediaries that enable the conversion between virtual assets (like cryptocurrencies) and traditional fiat currencies. This function is central to enabling liquidity and usability of cryptocurrencies within the traditional financial system.
* Transfer of Virtual Assets: VASPs may also provide services that involve the transfer of virtual assets from one user to another, which includes activities such as facilitating peer-to-peer transactions, wallet services, or custodial services.
* FATF Standards and Compliance: The FATF has established guidelines for VASPs to enhance transparency and ensure compliance with Anti-Money Laundering (AML) and Counter-Terrorist Financing (CTF) regulations.
Thus, the correct answers areC. Exchange virtual assets for fiat currencyandD. Transfer virtual assets, as these are the core activities defined for VASPs by the FATF.

Q44. What two types of transactions are there in Ethereum(pick z):

 
 
 
 
In Ethereum, there are two main types of transactions:Message CallandContract Creation. These transaction types enable Ethereum to support both the execution of contracts and interactions between accounts.
Key Details:
* Message Call Transactions: These transactions involve interactions between externally owned accounts (EOAs) or between EOAs and smart contracts. Message calls are used to transfer Ether or invoke functions within existing smart contracts.
* Contract Creation Transactions: This transaction type is used specifically to deploy new smart contracts on the Ethereum blockchain. During a contract creation transaction, the code for the new contract is included, which the network processes and stores at a unique address.
* Exclusion of User Transactions: While “User” refers to EOAs, it is not a type of transaction itself in Ethereum. Transactions in Ethereum are categorized based on their purpose – either calling an existing contract (Message Call) or creating a new one (Contract Creation).
Thus,C. Message CallandD. Contract Creationare the correct answers, as they represent the two main transaction types in Ethereum.

Q45. FinCEN requires any person engaging in the business of money transmission or the transfer of funds, including CVC, to (I) maintain an ”effective” written anti-money laundering program reasonably designed to prevent the business from being employed to help the financing of terrorist activities and money laundering and________.

 
 
 
 
FinCENrequires money transmitters and companies involved in virtual currency (CVC) transmission to report suspicious transactions as part of their anti-money laundering (AML) responsibilities. This is in addition to maintaining an effective AML program and registering as a money service business (MSB).
Key Details:
* AML Program: The program must be reasonably designed to detect and prevent the use of financial services for money laundering or terrorist financing.
* Reporting Suspicious Activity: FinCEN mandates that companies must file Suspicious Activity Reports (SARs) for any transactions that appear to be potentially suspicious or indicative of illegal activities.
* Regulatory Compliance: This requirement ensures that businesses adhere to federal regulations, contributing to a secure financial system by monitoring and reporting illicit activity.
Therefore,A. Report suspicious transactionsis the correct answer, as this is a key requirement for companies under FinCEN’s regulations regarding money transmission and virtual currencies.

Q46. A____does not result in a new chain and does not require client nodes to upgrade.

 
 
 
 
Asoft forkis a change to a blockchain protocol that is backward-compatible, meaning it does not result in the creation of a new chain and does not require all client nodes to upgrade. Nodes that do not upgrade can still participate in the network, although they may not have access to all new features introduced by the soft fork.
Key Details:
* Backward Compatibility: In a soft fork, updated nodes enforce the new rules, while non-updated nodes continue to follow the older protocol but remain part of the same blockchain. This contrasts with hard forks, where incompatibility leads to the creation of a new chain.
* Use Cases: Soft forks are commonly used to implement protocol upgrades or adjustments that do not fundamentally alter the structure of the blockchain, such as increasing block size limits or adding new features that are optional.
* Examples: An example of a soft fork is the Segregated Witness (SegWit) update on the Bitcoin blockchain, which was implemented to increase block capacity without splitting the chain.
Thus,B. Soft forkis the correct answer, as it refers to a backward-compatible update that does not require a new chain or mandatory upgrades from all nodes.

Q47. In this method users permanently destroy a certain quantity of bitcoin in proportion to the quantity of altcoin to be demand. What is this method?

 
 
 
 
Proof of Burn (PoB)is a consensus mechanism where users permanently destroy (or “burn”) a certain quantity of cryptocurrency, such as Bitcoin, to gain the right to mine or acquire an altcoin. This process proves commitment to the network and secures it by effectively sacrificing one asset to obtain another.
Key Details:
* Burning Process: In PoB, participants send a certain amount of cryptocurrency to an unspendable address, effectively removing it from circulation. This act serves as proof that they have invested in the network by reducing the supply of the original cryptocurrency.
* Purpose and Use Cases: PoB is used by networks that want to incentivize long-term commitment and reduce total supply. It is often seen in new blockchain projects that allow miners or users to trade value in established currencies like Bitcoin for the native token of the new network.
* Security: By requiring participants to destroy value, PoB helps prevent spam attacks and promotes network stability.
Therefore,B. Proof of Burnis the correct answer, as it describes the method where users destroy a certain amount of cryptocurrency to receive or mine another asset.

Q48. A Type II DAPP is categorized by its______

 
 
 
 
AType II DAppis a decentralized application that uses both the blockchain and protocol of aType I DApp.
Type I DApps are the foundational blockchain-based platforms, such as Ethereum, that operate with their own blockchain. Type II DApps build on these platforms, using the existing blockchain and protocol, but offering specific functionalities or services.
Key Details:
* Type I DApps: These are fundamental blockchain platforms, like Bitcoin or Ethereum, which have their own blockchain and provide a foundation for other applications.
* Characteristics of Type II DApps: Type II DApps leverage the infrastructure of Type I DApps but add additional functionality through smart contracts or protocols. For example, protocols such asERC-
20 tokensorERC-721 NFTsare built on Ethereum and utilize Ethereum’s underlying blockchain and consensus protocol.
* Integration: By utilizing both the blockchain and protocol of a Type I DApp, Type II DApps inherit the security, decentralization, and features of the underlying Type I platform, which simplifies their development and ensures compatibility.
In summary,B. Using the blockchain and protocol of a type Iaccurately describes the categorization of Type II DApps.

Q49. _______uses a Trusted Execution environment (TEE) to provide randomness and safety in the leader election process via a guaranteed wait time.

 
 
 
 
Proof of Elapsed Time (PoET)is a consensus mechanism that uses a Trusted Execution Environment (TEE) to ensure randomness and safety in the leader election process by enforcing a guaranteed wait time.
Developed by Intel, PoET is particularly used in permissioned blockchain networks where a TEE can securely run code to determine which node is elected to propose the next block. This mechanism is efficient in terms of energy consumption and provides a fair method for selecting a leader without requiring intensive computational power.
Key Details:
* Role of TEE in PoET: The TEE ensures that nodes wait for a random period before being eligible to propose a new block. This waiting period is verified by the TEE, which acts as a trusted third party to confirm that nodes have adhered to the assigned wait time.
* Randomness and Security: PoET provides randomness in the leader selection process, reducing the chances of any node gaining an unfair advantage. It also promotes security by leveraging the TEE, which is designed to prevent tampering with the waiting time calculations.
* Use Cases: PoET is mainly used in permissioned blockchain environments like Hyperledger Sawtooth, where nodes are pre-approved, and there is a need for a scalable yet secure consensus mechanism.
In summary, PoET is the correct answer as it directly refers to a consensus mechanism that utilizes a Trusted Execution Environment for leader election.

Q50. Ethereum uses_____ as Proof of Work (PoW) whereas Bitcoin uses____based PoW.

 
 
 
 
Ethereum uses Ethashas its Proof of Work (PoW) algorithm, whileBitcoin uses SHA-256for its PoW algorithm. Both are used to secure their respective networks, but they differ in terms of computational complexity and memory requirements.
Key Details:
* Ethash (Ethereum): Ethash is a memory-hard hashing algorithm designed to be resistant to ASIC mining, favoring GPU miners instead. It requires substantial memory, which helps to ensure a higher degree of decentralization.
* SHA-256 (Bitcoin): Bitcoin’s SHA-256 is a highly secure hashing algorithm that supports ASIC mining. It is computationally intensive but less memory-demanding compared to Ethash.
* Purpose in PoW: Both algorithms enable miners to validate transactions and secure the network by solving complex puzzles. Ethash’s design helps Ethereum maintain a decentralized network, whereas SHA-256 allows Bitcoin to achieve high levels of security with specialized mining equipment.
Therefore,D. ETHASH SHA-256is the correct answer, as these are the specific PoW algorithms used by Ethereum and Bitcoin, respectively.

Q51. These wallets use a this passphrase to derive the private key

 
 
 
 
Brain Walletsderive private keys from a passphrase. This approach allows users to create a wallet by memorizing a unique phrase, which is then hashed to generate the corresponding private key.
Key Details:
* Use of Passphrases: Brain wallets use a passphrase that is entered by the user, typically a string of words that can be remembered easily. This passphrase is then converted into a private key using a cryptographic hash function.
* Security Concerns: While convenient, brain wallets are susceptible to brute-force attacks if the passphrase is not sufficiently complex. Simple or common phrases may be vulnerable to attackers who use lists of common phrases to derive potential private keys.
* Distinction from Deterministic Wallets: Unlike Hierarchical Deterministic Wallets, which use a seed phrase to generate a tree of keys, brain wallets derive a single private key directly from a passphrase.
In conclusion,B. Brain Walletsis the correct answer, as these wallets use a passphrase to generate the private key.

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