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Author: Admin | 2025-04-28
Verifying that it has not been tampered with and was transmitted by the stated sender. Hence, a digital signature refers to a more secure electronic signature generated using a digital certificate and cryptographically bound to the document using public key infrastructure (PKI).Digital Signature in BlockchainDigital signatures play a crucial role in establishing trust in the blockchain. In a blockchain network, transactions are grouped into blocks and added to a chain of blocks in a linear, chronological order. Each block contains a list of transactions, along with a digital signature, called a “hash,” that links it to the previous block in the chain.This signature, called a “nonce” is a number generated by the miner creating the block and is added to the block header, which is then hashed. The miner is trying to find a nonce that will result in a specific pattern of leading zeroes in the block hash.All parties using digital signature technology must have faith that the person who created the signature maintains the private key secret. If malicious actors gain access to the private key, they can forge digital signatures in the private key holder’s name. Using digital signatures along with PKI or PGP reduces the possible security issues connected to transmitting public keys by validating that the key belongs to the sender and verifying the sender’s identity. The security of a digital signature depends on protecting the private key. Moreover, without PGP or PKI, proving someone’s identity or revoking a compromised key is impossible.Pro-Tip: Certificate Authorities (CAs), a type of Trust Service Provider, are widely accepted as reliable organizations for ensuring key security and providing the required digital certificates. The certificate is used to confirm that the public key belongs to the specific organization. Both the entity sending the document and the recipient signing it must
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