Code- and cipher-breaking have been in operation for ... play Fiona Bruce talks to a Bletchley Park code breaker Fiona Bruce talks to Jean Valentine, a Wren who worked as a code-breaker at ...

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 ...

In 1854, Sir Charles Wheatstone invented the cipher known as "Playfair," named for his friend Lyon Playfair, first Baron Playfair of St. Andrews, who popularized and promoted the cipher.

Code- and cipher-breaking have been in operation for ... play Fiona Bruce talks to a Bletchley Park code breaker Fiona Bruce talks to Jean Valentine, a Wren who worked as a code-breaker at ...