M - Technische Universität Dresden

p B
¬
authentication
of ownership
p Z B (X,t) owns
the right
[ 2 ]
transfer
order of
the payer
transfer the
right to
p E B (Y,t)
p Z B (X,t)
Secure device: 2 nd possibility
[ 1 ]
choice of
pseudonyms
p E (Y,t) ≈ p E B (Y,t)
p Z (X,t) ≈ p Z B (X,t)
witness B
sym. encryption system suffices
p Z (X,t)
[ 3 ]
authentication
by the witness
p E B (Y,t) owns
the right, got
from p Z B (X,t)
[ 4 ]
payer X pE (Y,t) pZ (X,t)
receipt
for the
payer
recipient Y
[ 5 ]
have got the
authentication
for the
right from
pZ (X,t).
recipient
have transferred
the right to
pE (Y,t).
pE (Y,t)
p B
¬
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