The problem was a famous one in the field it had been proposed in the late 1970s by developers of the famous rsa public key encryption scheme .
这是密码学领域一个有名的难题--它于20世纪70年代末由著名的rsa公钥加密方案的开发人员提出的。
You log in with something you 've memorized ( your password ) and then to make things extra-secure you also use a second thing - something you have in hand ( a smart card , say , or an rsa token ) .
The number of wireless networks , including public hotspots and business systems , grew by 160 per cent in the past year , leaving london girdled by a web of 7130 wireless access points , according to a new study by rsa , the security company .
