APPropriate Behaviour
The book about all the things software writers do that aren't writing software.
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Category Archives: Crypto
Did the UK create a new kind of “Crypto Mule”?
It’s almost always the case that a new or changed law means that there is a new kind of criminal, because there is by definition a way to contravene the new law. However, when the law allows the real criminals … Continue reading
On how to get crypto wrong
I’ve said time and time again: don’t write your own encryption algorithm. Once you’ve chosen an existing algorithm, don’t write your own implementation. Today I had to look at an encryption library that had been developed to store some files … Continue reading
Posted in code-level, Crypto, Encryption
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On the extension of code signing
One of the public releases Apple has made this WWDC week is that of Safari 5, the latest version of their web browser. Safari 5 is the first version of the software to provide a public extensions API, and there … Continue reading
Regaining your identity
In my last post, losing your identity, I pointed out an annoying problem with the Sparkle update framework, in that if you lose your private key you can no longer post any updates. Using code signing identities would offer a … Continue reading
Posted in Codesign, Crypto, PCAS, Updates
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Losing your identity
Developers make use of cryptographic signatures in multiple places in the software lifecycle. No iPad or iPhone application may be distributed without having been signed by the developer. Mac developers who sign their applications get to annoy their customers much … Continue reading
