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Tag: crypto

Cryptanalysis of the iMessage Protocol

Introductory Material It was brought to my attention recently that the Apple publishes the details of their security protocols online (which is pretty cool of them), so I took the opportunity to do a somewhat rudimentary review of the iMessage […]

The Death of SHA-1

Today (February 23, 2017), Google announced the first known collision in SHA-1.  They’ve posted two PDF files (which I’ve re-uploaded here and here) that both hash to the same value (38762cf7f55934b34d179ae6a4c80cadccbb7f0a).  What does this mean?  In short – the collision […]