Overheard At Interop, Day 1
Observations and highlights from the first day of Interop Las Vegas 2016.
Satoshi: how Craig Wright’s deception worked
My previous post shows how anybody can verify Satoshi using a GUI. In this post, I'll do the same, with command-line tools (openssl). It's just a simple application of crypto (hashes, public-keys) to the problem.I go through this step-by-step discussion in order to demonstrate Craig Wright's scam. Dan Kaminsky's post and the redditors comes to the same point through a different sequence, but I think my way is clearer.
Step #1: the Bitcoin address
We know certain Bitcoin addresses correspond to Satoshi Nakamoto him/her self. For the sake of discussion, we'll use the address 15fszyyM95UANiEeVa4H5L6va7Z7UFZCYP. It's actually my address, but we'll pretend it's Satoshi's. In this post, I'm going to prove that this address belongs to me.
The address isn't the public-key, as you'd expect, but the hash of the public-key. Hashes are a lot shorter, and easier to pass around. We only pull out the public-key when we need to do a transaction. The hashing algorithm is explained on this website [http://gobittest.appspot.com/Address]. It's basically base58(ripemd(sha256(public-key)).
Step #2: You get the public-key
Hashes are one-way, so given a Bitcoin address, we can't immediately convert it into a public-key. Instead, we have to look it Continue reading
CiscoLive 2016: ‘Summer Camp for Geeks’
The other day I was talking with a friend about my summer plans. As we were talking about July….. my face apparently lit up and my voice got all excited and happy when I mentioned CiscoLive.
“What exactly is CiscoLive?” she asked.
I answered, “CiscoLive is my absolute favorite work week of the entire year. Has been since my first one back in 2006.”
“What do you like so much about it?” she asked. ……
My answer to her? 
“It’s like a week long Summer Camp for Geeks”
Why I Love Cisco Live US
- Learning & Sharing Knowledge
- Breakouts, Technical Seminars, and Labs
- Meet the Expert
- Lunch and Learn (Formerly Table Topics)
- Social Media Fun
Learning & Sharing Knowledge
Learning… learning… learning ….. learning. I just love learning! For me… learning from others and passing that on is one of my passions in life.
And WOW is there knowledge to learn at CiscoLive!
Of course, I have never been to a CiscoLive as a non Cisco employee. Nor have I ever gone and not been a speaker. So, for me, CiscoLive has always involved me prioritizing technical knowledge sharing/teaching with CiscoLive Continue reading
Satoshi: That’s not how any of this works
In this WIRED article, Gaven Andresen says why he believes Craig Wright's claim to be Satoshi Nakamoto:“It’s certainly possible I was bamboozled,” Andresen says. “I could spin stories of how they hacked the hotel Wi-fi so that the insecure connection gave us a bad version of the software. But that just seems incredibly unlikely. It seems the simpler explanation is that this person is Satoshi.”That's not how this works. That's not how any of this works.
The entire point of Bitcoin is that it's decentralized. We don't need to take Andresen's word for it. We don't need to take anybody's word for it. Nobody needs to fly to London and check it out on a private computer. Instead, you can just send somebody the signature, and they can verify it themselves. That the story was embargoed means nothing -- either way, Andresen was constrained by an NDA. Since they didn't do it the correct way, and were doing it the roundabout way, the simpler explanation is that he was being bamboozled.
Below is an example of this, using the Electrum Bitcoin wallet software:
This proves that the owner of the Bitcoin Address has signed the Message Continue reading
Label Switched Multicast — Packet Walk
This post is going to follow a multicast packet as it moves through a sample MPLS network using Label Switched Multicast (LSM). I'll show how the packet moves through the network by looking at the forwarding tables on different routers and also by doing some packet captures.
This post is part of a series I'm writing on LSM and if you're not already familiar with LSM, I recommend you go back and read the previous posts.
After reading this post you will be able to precisely describe how LSM forwarding works in the data plane and will be able to do some basic troubleshooting.
Let's get into the lab!
Want to be a better engineer? Learn to troubleshoot
Want to be a better engineer? Learn to troubleshoot Since I have been working in IT for many years there are a few traits that generally separate a good engineer from a great engineer. One of those traits is troubleshooting. For those of you out there who have been doing this a long time would […]
The post Want to be a better engineer? Learn to troubleshoot appeared first on Packet Pushers.
Want to be a better engineer? Learn to troubleshoot
Want to be a better engineer? Learn to troubleshoot Since I have been working in IT for many years there are a few traits that generally separate a good engineer from a great engineer. One of those traits is troubleshooting. For those of you out there who have been doing this a long time would […]
The post Want to be a better engineer? Learn to troubleshoot appeared first on Packet Pushers.
Your Docker Agenda for May
In the month of May, there are plenty of fantastic events happening all over the world. Take a look at the agenda and make sure to check out a Docker meetup in your community! North and South America | … ContinuedMicrosoft Azure Releases IoT SDK in Beta & Preview Device Tool
Microsoft Azure's IoT philosophy is to support different operating systems and hardware.
Coming to Terms With OpenStack
Every six months or so, the OpenStack community seems to swing between euphoria and despair – depending on the amount of progress being made in deploying OpenStack in production environments.
How Big Is The Ecosystem Growing On Clouds?
Letting go of infrastructure is hard, but once you do – or perhaps more precisely, once you can – picking it back up again is a whole lot harder.
This is perhaps going to be the long-term lesson that cloud computing teaches the information technology industry as it moves back in time to data processing, as it used to be called, and back towards a rental model that got IBM sued by the US government in the nascent days of computing and compelled changes in Big Blue’s behavior that made it possible for others to create and sell systems against …
How Big Is The Ecosystem Growing On Clouds? was written by Timothy Prickett Morgan at The Next Platform.
Worth Reading: Neutron Networking
The post Worth Reading: Neutron Networking appeared first on 'net work.