Decades: 1210s 1220s 1230s 1240s 1250s - 1260s - 1270s 1280s 1290s 1300s 1310s
Years: 1256 1257 1258 1259 1260 - 1261 - 1262 1263 1264 1265 1266
Births
Deaths
... The cryptographic keys themselves have been discovered and widely disseminated (see DeCSS). See Professor Edward Felton's freedom-to-tinker Web s ...