Daniel Harder, Cameron Byer and Hannah Leaman review their work from the Kryptos 2019 cryptanalysis competition. An Eastern Mennonite University team this month placed second out of 62 teams in an ...

But the British signals intelligence agency can now expect a sudden influx of ‘applicants’ after James Firth’s solution was published on the Open Digital Policy Organization website in the early hours ...

At the Crypto 2004 conference in Santa Barbara, Calif., this week, researchers announced several weaknesses in common hash functions. These results, while mathematically significant, aren’t cause for ...

Introduction: A revolutionary cipher -- Cryptology before 1500: a bit of magic -- The black chambers: 1500-1776 -- Crypto goes to war: the American Revolution -- Crypto goes to war: the American Civil ...