11 digital clash - Initialization
 p, q, k1, k 2...

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Unformatted text preview: Initialization
 p, q, k1, k 2 Central
Authority
 publishes
 g, g1, g2 H, H 0 Spending
 the
coin
 Coin
 generation
 € 1 Computations
in
the
 generation
of
the
coin
 h ≡ g x , h1 ≡ g1x , € gw , β 4 x h2 ≡ g2 (mod p) Computations
in
the
 spending
of
the
coin
 w € The
Bank‐Mak’s
Bank
 ( A, B, z, a, b, r) ( r1, r2 , d ) € 5 I ≡ g1u (mod p) x c c1 € € 3 Verifications
 A, B, z, a, b, 6 2 € z' ≡ ( Ig2 ) (mod p) d r1, r2 € Check
 r € g ≡ ah H ( A ,B ,z,a ,b ) 1 s, x1, x 2 ,α1,α 2 € The
Spender‐Vicky
 2 r A r ≡ z H ( A ,B ,z,a ,b ) (mod p) The
Coin
 € 3 The
Merchant‐Mak’s
Book
 Store
 € € € 4 Check
 r g1r1 , g22 ≡ A d B(mod p) € € ...
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