I am trying to use a custom class as key for an unordered_map, like the following: #include <iostream> #include <algorithm> #include <unordered_map> using namespace std; class ...

What is the advantages of using Merkle trees over Hash lists? A hash list is a 2-level structure, Merkle tree is log n - level structure. Both can be used to verify if one of the nodes has changed....

Merkle trees (aka hash trees) are used for data synchronization in both "Cassandra" & "Dynamo". As with any hash function, there is a probability that different data can have the same hash val...

I just found out about the AWS Glacier service and wanted to write a small Python application to upload files via the REST API. I took a look at the required headers and stumbled upon x-amz-sha256-...