Code- and cipher-breaking have been in operation for centuries. However, cryptanalysis – the art of deciphering encoded messages – took on a new importance during WW2 as British boffins ...

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 ...

At Bletchley Park, the wartime headquarters of the Government Code and Cipher School, she was part of a "brilliant" team of cryptanalysts who decoded more than a million German messages ...