March 2018
Beginner to intermediate
656 pages
20h 9m
English
Content preview from Mastering Blockchain - Second Edition
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Digital signatures
Digital signatures provide a means of associating a message with an entity from which the message has originated. Digital signatures are used to provide data origin authentication and non-repudiation.
Digital signatures are used in blockchain where the transactions are digitally signed by senders using their private key before broadcasting the transaction to the network. This digital signing, proves they are the rightful owner of the asset, for example, bitcoins. These transactions are verified again by other nodes on the network to ensure that the funds indeed belong to the node (user) who claims to be the owner. We will discuss these concepts in more detail in chapters dedicated to Bitcoin and Ethereum in this book.