nIn
the physical world, why do we trust the statements contained on a physical
cert?
nWe
believe it’s hard to forge the cert
nWe
trust the entity that “signed” the cert
nIn
the digital world we need those same two properties
nWe
need to believe it’s hard to forge the digital signature on a signed
document
nWe
need to trust the issuer/signer not to lie to us