BlockChain class3 Jan3 |Nodes and Consensus| What is AES RSA Cryptography తెలుగులో I 9985269518

BlockChain class3 Jan3 |Nodes and Consensus| What is AES RSA Cryptography తెలుగులో I 9985269518

#blockchaintutorialtelugu #aesrsacryptographytelugu #blockchainexplainedtelugu


#BlockchainCourseContent #BlockchainTraining
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What is #Node
A #node is a device on a #blockchain network, that is, in essence, the foundation of the technology, allowing it to function and survive. ... Each cryptocurrency has its own nodes, maintaining the transaction records of that particular token. Nodes are the individual parts of the larger data structure that is a blockchain.

CONSENSUS:
#Consensus Mechanism A consensus mechanism is a fault-tolerant mechanism that is used in computer and blockchain systems to achieve the necessary agreement on a single data value or a single state of the network among distributed processes or multi-agent systems.

#AES and RSA #cryptography #Blockchaintecchnology
#Blockchainonlinetraining #Asymmetric encryption

# AES:
AES (acronym of Advanced Encryption Standard) is a symmetric encryption algorithm. The algorithm was developed by two Belgian cryptographer Joan Daemen and Vincent Rijmen. AES was designed to be efficient in both hardware and software, and supports a block length of 128 bits and key lengths of 128, 192, and 256 bits.

HOW DOES AES WORKS:
Each cipher encrypts and decrypts data in blocks of 128 bits using cryptographic keys of 128-, 192- and 256-bits, respectively.

#SYMMETRIC AES:
AES is a modern block symmetric cipher, one of the most popular ciphers in the world. It was developed in 1997 by Vincent Rijmen and Joan Daemen, and later approved as a federal encryption standard in the United States in 2002.
Block cipher with symmetric secret key
Block length = 128 bits
Key length = 128 or 192 or 256 bits
AES is considered as a strong and secure cipher. Over last few years (mostly 2005-2010) several attacks against different AES implementations were described but generally speaking they concern just some special cases and are not considered to be a threat to the AES algorithm itself.

#RSA:
RSA: The Most Used Asymmetric Algorithm
The most common asymmetric cipher currently in use is RSA, which is fully supported by the .NET Security Framework. Ron Rivest, Adi Shamir, and Leonard Adleman invented the RSA cipher in 1978 in response to the ideas proposed by Hellman, Diffie, and Merkel.
Later in this chapter, we shall see how to use the high-level implementation of RSA provided by the .NET Security Framework. But first, let's look at how RSA works at a conceptual level.Blockchain is a digital ledger in which transactions made in bitcoin or another cryptocurrency are recorded chronologically and publicly.

HOW DOES RSA KEY WORKS:
The RSA SecurID authentication mechanism consists of a "token" — either hardware (e.g. a key fob) or software (a soft token) — which is assigned to a computer user and which creates an authentication code at fixed intervals (usually 60 seconds) using a built-in clock and the card's factory-encoded almost random key

#ASYMMETRIC RSA:
RSA in one of the most popular algorithms with public key encryption. It can be used for either encryption of messages or for digital signatures.
Message encryption or authentication
Key has usually length of about 1000 to 4000 bits
RSA was designed by Ron Rivest, Adi Shamir and Leonard Adleman in 1977.

#POS:
Proof of stake (PoS) is a type of algorithm by which a cryptocurrency blockchain network aims to achieve distributed consensus. In PoS-based #cryptocurrencies, the creator of the next block is chosen via various combinations of random selection and wealth or age.

#POW:
Proof-of-Work, or PoW, is the original consensus algorithm in a Blockchain network. In Blockchain, this algorithm is used to confirm transactions and produce new blocks to the chain. With PoW, miners compete against each other to complete transactions on the network and get rewarded.



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BlockChain class3 Jan3 |Nodes and Consensus| What is AES RSA Cryptography తెలుగులో I 9985269518 datascience berkeley
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