Usability

  (The abstract:) Potentially dangerous cryptography errors are well documented in many applications. Conventional wisdom suggests that many of these errors are caused by cryptographic Application Programming Interfaces (APIs) that are too complicated, have insecure defaults, or are poorly documented. To address this problem, researchers have created several cryptographic libraries that they claim are more…

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I was irked to see a tweet “Learned a new word! Pseudoarboricity: the number of pseudoforests needed to cover a graph. Yes, it is actually a word and so is pseudoforest.” The idea that some letter combinations are “actual words” implies that others are “not actual words,” and thus, that there is some authority who…

Read More On Language

I’m having a problem where the “key identifier” displayed on my ios device does not match the key fingerprint on my server. In particular, I run: % openssl x509 -in keyfile.pem -fingerprint -sha1 and I get a 20 byte hash. I also have a 20 byte hash in my phone, but it is not that…

Read More IOS Subject Key Identifier?