Mastering Blockchain - Second Edition

Privacy and confidentiality

This requirement is one of the most critical factors. As traditional blockchains are permissionless, in the permissioned model like Hyperledger Fabric, it is of utmost importance that transactions on the network are visible to only those who are allowed to view it.

Privacy and confidentiality of transactions and contracts are of absolute importance in a business blockchain. As such, Hyperledger's vision is to provide support for a full range of cryptographic protocols and algorithms. We discussed cryptography in Chapter 3, Symmetric Cryptography and Chapter 4, Public Key Cryptography.

It is expected that users will be able to choose appropriate modules according to their business requirements. For example, if a ...