Notions of security In their foundational paper , PERSON@1 , PERSON@2 , and PERSON@3 lay out a hierarchy of attack models against digital signatures : In a key-only attack , the attacker is only given the public verification key .

In their foundational paper , PERSON@1 , PERSON@2 , and PERSON@3 lay out a hierarchy of attack models against digital signatures : In a key-only attack , the attacker is only given the public verification key .
