riv2
CS2:/usr/lib/cgi-bin/mcdaniel/cpp/riv2.cpp
RSA encryption
input_string: p=2172197393&q=7014005681
return from parseString tst 2172197393
p = "2172197393";
q = "7014005681";
10 digits in p
10 digits in q
rn 1189286213
n = p*q
n = 15235804854755389633
20 digits in n
z = (p-1)*(q-1)
z 15235804845569186560
20 digits in z
d = rand() | greatest_common_divisor(z,d) == 1
d 75447595415686315541
e = a number | e*d % z == 1
e 7818456687722641981
d*e%z 1
msgst =2172197393
11 characters in msgst
msg 61050049055050049057055051057051
z 15235804845569186560
n 15235804854755389633
emsg 12043727603766724064
decrypted msg as numbers = 2020368871215607476
decrypted msg = pg×_Ü