Windows XP, Microsoft Corp.’s most popular operating system, sports the same encryption flaws that Israeli researchers recently disclosed in Windows 2000, Microsoft officials confirmed late Tuesday.

The flaw in Windows 2000’s random number generator uncovered by Israeli researchers is a vulnerability — but not a security vulnerability, Microsoft Corp. said late last week, as it left users ...

Using a single, chip-scale laser, scientists have managed to generate streams of completely random numbers at about 100 times the speed of the fastest random-numbers generator systems that are ...