RSA Schlüssel doch nicht so sicher

RSA Schlüssel sind ja eindeutig und damit sehr sicher.
Was passiert aber nun wenn man die Möglichkeit hat, viele dieser Schlüssel zu vergleichen ?

In dem Paper haben einige Kryptologen mal das Internet nach RSA-Schlüsseln durchsucht, einige Millionen eingesammelt, und geguckt, ob es da gemeinsame Primfaktoren in den Modulen gibt.

More worrisome is that among the 4.7 million distinct 1024-bit RSA moduli that we had originally collected, more than 12500 have a single prime factor in common

Ups...

Quelle und das PDF

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