Hashing exploit threatens digital security
Cryptographers have found a way to snip a digital signature from one document and attach it to a fraudulent document without invalidating the signature and giving the fraud away.
The development means that attackers could potentially forge legal documents, load certified software with bogus code, or turn a digitally-signed letter of recommendation into one that authorises access to private information.
By Celeste Biever at New Scientist.
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