OPA for HTTP Authorization

Open Policy Agent[1] is a promising, light weight and very generic policy engine to govern authorization is any type of domain. I found this comparion[2] very attractive in evaluating OPA for a project I am currently working on, where they demonstrate how OPA can cater same functionality defined in RBAC, RBAC with Seperation of Duty, ABAC and XACML.  
Here are the steps to a brief demonstration of OPA used for HTTP API authorization based on the sample [3], taking it another level up.
Running OPA Server First we need to download OPA from [4], based on the operating system we are running on.  For linux, curl -L -o opa https://github.com/open-policy-agent/opa/releases/download/v0.10.3/opa_linux_amd64 Make it executable, chmod 755 ./opa Once done, we can start OPA policy engine as a server.
./opa run --server Define Data and Rules Next we need to load data and authorization rules to the server, so it can make decisions. OPA defines these in files in the format of .rego. Below is a sample …

Worth of Bitcoins

Bitcoins seems to be an interesting subject and is been taking the hype recently.

If we look at the value of a Bitcoin over the range of years, at 2015 it was worth $250 and now it is going beyond value of $2500 at the moment. This is capable of attracting more people towards it. We will proceed with more posts to understand Bitcoins, how to use it and any useful information for anyone interested in moving forward with Bitcoins, which I think is the currency of the future.

Following captured from coinbase.com on 8th June 2017 shows the value deviation of bitcoin from it's very start.



Source : https://www.coinbase.com

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