Читать книгу The Official (ISC)2 CCSP CBK Reference - Leslie Fife, Aaron Kraus - Страница 66

Blockchain is similar to cloud computing, with some significant differences. A blockchain is an open distributed ledger of transactions, often financial, between two parties. This transaction is recorded in a permanent and verifiable manner. The records, or blocks, are linked cryptographically and are distributed across a set of computers, owned by a variety of entities.

Blockchain provides a secure way to perform anonymous transactions that also maintain nonrepudiation. The ability to securely store a set of records across multiple servers, perhaps in different CSPs or on-premise, could lead to new and powerful storage approaches. Any data transaction would be committed to the chain and could be verifiable and secure. Blockchain technology pushes the boundaries of cryptographic research in ways that support secure distributed computing.

In cloud computing, the data may be owned by a single entity. But, the ability to securely store this data across CSPs would open new storage methods and would lead to less vendor lock-in. Each data node could be in any location, on any server, within any CSP or on-premise, where each node in the data chain is not important. While not every record in the cloud is the result of a financial transaction, all data records are the result of some transaction.

Other improvements in the use of cryptography to link records in an immutable manner or improvements in the techniques used to distribute records across multiple servers would benefit both blockchain and cloud computing.