e (nW , 3) (nJ , 3) (nA , 3) 0 ≤ x < nW , nJ , nA x3 mod mod nW x3 mod mod nJ x3
O (log2 (nA + nJ + nW )) nW , nJ , nA
x
a k O(log2 a)
C = x 3
nW .nJ .nA
R x = C = C 1/3
eA
0 < r < n A
mod nA mod
y x.c mod mod nA
c = m = m
x<
x x
n
3
C = x
mod nA mod
c
c
x r eA mod mod nA
y
u = y dA
mod nA mod
u.r
1
mod nA mod
−
cdA (xdA
m
mod nA = cdA xdA r 1 mod nA = mod nA = y dA .r 1 mod mod mod nA )r 1 mod mod mod nA = c = cdA rr 1 mod mod nA = c dA mod mod nA = m = m 1 mod nA mod u.r O(log2 nA ) m
u.r
1
−
−
−
−
−
−
n
eB
m
eA eB
mod nB mod
re A + se + seB = 1
eA eB
(eA , eB , n) (cA , cB )
r s
n
n
crA .csB mod mod n = m = m r.eA +s.eB mod mod n =
m
m
mod nA cB = m mod m
eA
cA = m
(eA , dA ) (eB , dB )
b
a
p
=0 a
a
x y y ) = 0 mo d p mod p mod
n
p
Z/nZ
b
n = p.q = p.q
a
p
x y = p − x
a p q x1 n − x1 x2 n − x2
p−1 2
Z/nZ
g 2i
1[ 1[qq ]
+ v j .p.p
p
q
mod mod p mod mod q u1 = u u2 = p − u
1 ≤ i, j ≤ 2
q
mod n mod
mod n a mod
−
a = x = x 2 = y 2 mod mod p x2 − y 2 = (x − y)( y )(x x + Z/pZ p x − y = 0 x + y + y = 0 mod od p y = p = p − x
a
x1 n − x1 x2
g = x
1[ p] p]
g
p
n − x2
v1 = v v2 = q − v
n ui .q.q
a ≡ x 2 mod mod p
−
a = 0 mod od p a p
(b − x) x)2 = b 2 − 2 2bx bx + + x x2 = x 2 = a mod mod b
(b − x) x)2 ≡ a mod mod b
(Z/pZ , ×)
a = x = x 2 + kpq
Z/nZ
x2 ≡ a mod mod b
q
a =0 x ≡ a mod b. x a p q
2
a b x
(Z/pZ , .) p 1 g = 1 mod od p g p− p 1 g = − 1 x = −1 = 1 p =2 x Z/pZ g
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