27 Nov 2018
The problem of data integrity verification is a classic topic that has been well-studied in the last decades. Many database or log systems run on untrusted servers or are subject to malicious attacks from insiders and, therefore, vulnerable to tampering. With the advent of cloud computing and the possibility of dealing with outsourced data, such situation has been aggravated. This problem is an essential challenge for financial institutions where preserving the correctness of customer data and transactions is crucial in terms of legal compliance and reputation.