The cipher controversy is back. The Intercept, an American media outlet known for unearthing secret documents, has claimed to have got hold of the text of the cipher that was at the centre of Imran ...

“A man is crazy who writes a secret unless he conceals it from the crowd,” wrote 13th-century philosopher Roger Bacon. Since ancient times, politicians, military leaders and even lovers have used ...

You could do worse than to confuse the meanings of "code" and "cipher"—even cryptographers sometime use the terms as though they had the same meaning. There is, however, a definite distinction between ...

Astra rebuilt the Germans’ secret letter grid, then found a date error historians can’t explain.