The Mathematics
of Secrets
EN
NL
00
01
s
p
(t) = sin( t · π / 2
p−1
)
s
p
(t)
p
t
02
bit(r, t) = ⌊t / 2
r
⌋ mod 2
≡ (t >> r) & 1
bit(r,t)
r
t
▶
↻
t =
0
▶
↻
t =
0
0
▼
03
◀
▶
Grid 10×10
Ulam spiral
Klauber triangle
p
dec
p
bin
q
dec
q
bin
n
dec
n
bin
φ(n)
04
01
p, q
→
02
n=p×q
→
03–04
e, d
→
05
→
06
01
p
—
q
—
m
—
05