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href=https://www.bitdegree.org/"/crypto/learn/crypto-terms/what-is-encryption/">encrypt data. Public key cryptography requires two <a href=https://www.bitdegree.org/"/crypto/learn/crypto-terms/what-is-public-key/">public and <a href=https://www.bitdegree.org/"/crypto/learn/crypto-terms/what-is-private-key-secret-key/">private keys which contain information that is used to randomize data. The scrambled data can only be <a href=https://www.bitdegree.org/"/crypto/learn/crypto-terms/what-is-decryption/">decrypted using the correct key.</p>\n<p>If a user has a <strong>plaintext</strong> message like &ldquo;Blockchain&rdquo;, it can be encrypted using a key &ldquo;146fhsj77bq10l5g&rdquo; to appear as <a href=https://www.bitdegree.org/"/crypto/learn/crypto-terms/what-is-ciphertext/">ciphertext &ldquo;dz59YAUB9WNcTu0y7ZBEXg==&rdquo;. The cipher can then be decrypted using the same key to appear in plaintext.</p>\n<p>The protocol prevents any unauthorized attempts to access data by using a pair of keys to encrypt and decrypt the information. The network users receive public and private keys from a network&rsquo;s certification authorities.</p>\n<p>Users that want to encrypt data can obtain the recipient&rsquo;s public key from a public directory. They can use the key to encrypt the message and forward it to the intended recipient. The recipient can use their private key to decrypt the message. The private key can only be accessed by the recipient.</p>\n<p>One of the most commonly used cryptographic systems is the Rivest-Shamir-Adleman (RSA) algorithm. It is used to securely send sensitive data over insecure networks. With the RSA algorithm, both the public and private keys can encrypt messages without sacrificing their authenticity and integrity.</p>\n<p>There are numerous <strong>advantages to using the RSA algorithm</strong> as a cryptographic tool, including:</p>\n<ul>\n<li>Excellent data security. It&rsquo;s impossible to determine the decryption key by only using the cryptographic algorithm and the encryption key;</li>\n<li>It is considered to be one of the most secure protocols. Unlike private key cryptography, users are not required to reveal their private keys. This reduces the risk of the private key being intercepted during transmission and used with malicious intent;</li>\n<li>Users take responsibility for keeping their private keys secure, meaning that the keys can be used as non-repudiable <a href=https://www.bitdegree.org/"/crypto/learn/crypto-terms/what-is-digital-signature/">digital signatures</strong></a>. This is not possible in private-key systems where users have to share their secret keys for decryption.</li>\n</ul>\n<p>However, there are also some downsides to public-key cryptography and the utility of the RSA algorithm, such as:</p>\n<ul>\n<li>Public-key cryptography is <strong>slow</strong> compared to private key cryptographic methods. However, public-key cryptographic methods can be used in tandem with secret-key systems, maintaining the security of the transmission while improving its speed;</li>\n<li>Public-key cryptographic tools can be vulnerable to attacks coming from compromised accreditation entities. Criminals use the public key certificate from a vulnerable authority to imitate them;</li>\n<li>If the user loses their private key, the encryption system becomes susceptible to malicious attacks from criminal entities.</li>\n</ul>","level":"medium","meta_title":"What is Public-Key Cryptography? Definition & Meaning | Crypto Wiki","meta_description":"Public-Key Cryptography meaning: Public-Key Cryptography - algorithm-based cryptographic procedures that are used to randomize and encrypt data.","meta_keywords":null,"language":"en","created_at":"2022-03-25T15:14:14.000000Z","updated_at":"2022-05-13T14:32:23.000000Z","preview_url":"https://www.bitdegree.org/crypto/learn/crypto-terms/what-is-public-key-cryptography"},"prevSection":{"id":621,"original_id":null,"author_id":41,"translator_id":null,"title":"What is Proof-of-Validation (PoV)?","slug":"what-is-proof-of-validation-pov","section":"P","keyword":"Proof-of-Validation (PoV)","status":"published","definition":"a type of Proof-of-Stake (PoS) consensus mechanism where consensus is reached via staked validator nodes.","content":"<p><strong>Proof-of-Validation (PoV)</strong> is a form of <a href=https://www.bitdegree.org/"/crypto/learn/crypto-terms/what-is-proof-of-stake-pos/">PoS consensus process in which validator nodes are <a href=https://www.bitdegree.org/"/crypto/learn/crypto-terms/what-is-staking/">staked to reach consensus. Every node in a PoV system holds the full history of the transactions recorded in the <a href=https://www.bitdegree.org/"/crypto/learn/crypto-terms/what-is-block/">blocks that make up the blockchain.</p>\n<p>A user&rsquo;s <a href=https://www.bitdegree.org/"/crypto/learn/crypto-terms/what-is-private-key-secret-key/">public key</strong></a> or the <strong>native token</strong> of the node can be used to identify a copy of all user accounts. This essentially means that your <a href=https://www.bitdegree.org/"/crypto/learn/crypto-terms/what-is-wallet/">crypto wallet</strong></a> is identifiable, and your token balance can be viewed by anyone who holds the <a href=https://www.bitdegree.org/"/crypto/learn/crypto-terms/what-is-public-key/">public key</strong></a>.</p>\n<p>A user can then <strong>stake their crypto tokens in the validator nodes</strong>. The number of nodes that belong to a validator depends on how many tokens were stakes within each of the validators.</p>\n<p>A new block is confirmed if at least two-thirds of the network validators send a commit vote for the block. Proof-of-Validation protocols abide by the <a href=https://www.bitdegree.org/"/crypto/learn/crypto-terms/what-is-byzantine-fault-tolerance-bft/">Byzantine fault tolerance</strong></a> as they can <strong>continue to function normally</strong> and reach consensus if one-third or fewer nodes within the network are compromised.</p>","level":"easy","meta_title":"What is Proof-of-Validation (PoV)? 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Handbook Cover Page
Crypto Terms: Letter P

What is Protocol?

Protocol MEANING:
Protocol - is a fundamental collection of instructions that describes network interactions, such as consensus, transaction validation, and network involvement on a blockchain.
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1 minute

Let's find out Protocol meaning, definition in crypto, what is Protocol, and all other detailed facts.

A protocol is the basic set of instructions that describe the interactions on a network, typically involving consensus, transaction validation, and network participation on a blockchain.

They construct the design of the blockchain for cryptocurrencies, which is the distributed database management system for digital money to be safely transacted on the internet.
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