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colmmacc's profile
Colm MacCárthaigh
Colm MacCárthaigh
Colm MacCárthaigh
@colmmacc

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Colm MacCárthaigh

@colmmacc

AWS, Apache, Crypto, Irish Music, Haiku, Photography

Seattle
notesfromthesound.com
Joined April 2008

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    1. Colm MacCárthaigh‏ @colmmacc 4 Sep 2018
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      Secure end-to-end cryptography is becoming table-stakes. Everything needs it, everywhere. How many other fields can you say that about?

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    2. Colm MacCárthaigh‏ @colmmacc 4 Sep 2018
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      Some closer stories from my personal experience: at Amazon we hire a lot of people from college into a general-purpose SDE1 role. We've had many such people join one of our crypto-focused teams and absolutely succeed.

      1 reply 1 retweet 7 likes
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    3. Colm MacCárthaigh‏ @colmmacc 4 Sep 2018
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      If you go through the commits of s2n, you'll find a bunch! And they are absolute *experts* now. It's amazing to watch them dissect things. This stuff is totally doable. It's not magic, forbidden knowledge only for the special few. It's for US!

      1 reply 1 retweet 4 likes
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    4. Colm MacCárthaigh‏ @colmmacc 4 Sep 2018
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      My own story is littered with being garbage at math. I was a C student in high-school. Same when we did math at university. But getting into Cryptography really changed that. It unlocked a lot of the "why" of math for me, it gave it all a sudden purpose that was super motivating.

      4 replies 2 retweets 19 likes
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    5. Colm MacCárthaigh‏ @colmmacc 4 Sep 2018
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      ... I ended up *teaching* university level math, and I still teach a bit today. I still make mistakes, my numeracy isn't great, and I'm not going to be a mathematician any time soon, but it's gratifying to at least be competent. Thanks to Cryptography!

      1 reply 1 retweet 10 likes
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    6. Colm MacCárthaigh‏ @colmmacc 4 Sep 2018
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      Final tweet: Don't be discouraged by the intimidating appearance, find a team and spend a few hours a week on it, and get stuck in. If you do it now, it's really really good timing, and you can make LOTS of money. Also: we're hiring.

      2 replies 1 retweet 30 likes
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    8. Colm MacCárthaigh‏ @colmmacc 4 Sep 2018
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      Replying to @selrahc000

      CloudHSM is the best HSM! if your design or regulatory requirements demand a HSM it’s much better than running your own! Lots of behind the scenes secops goes into it. Though I’d recommend KMS as a cheaper and more scalable alternative if you can use it.

      0 replies 0 retweets 1 like
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    10. Colm MacCárthaigh‏ @colmmacc 5 Sep 2018
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      Replying to @selrahc000

      Multi-tweet answer! First: in general, the HSM trust model is that you trust the HSM manufacturer. There's attestation and an audit log, so every action is visible to you. If AWS were to access it, it'd be in the log.

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      Colm MacCárthaigh‏ @colmmacc 5 Sep 2018
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      Secondly, HSMs are a defense against key theft and long term impersonation, but not mis-use. For example, if your host accessing the HSM is compromised, an attacker can still use your key. Your security model always needs a revocation or recovery strategy for that case.

      7:02 AM - 5 Sep 2018
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        1. Colm MacCárthaigh‏ @colmmacc 5 Sep 2018
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          Replying to @colmmacc

          AWS has the scale to make some seriously big investments in physical security; chain of custody from time of manufacture, well-guarded data centers, pro-active penetration tests, etc ... as well as the resources to make provisioning quick and easy. So much easier than DIY.

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