def main():
# basic encryption example
#a = 9
#b = 7
#n = 143
# basic decryption example
#a = 48
#b = 103
#n = 143
a = 1094051021
b = 65537
n = 3322225339
# online example https://www.cs.utexas.edu/~mitra/honors/soln.html
#a = 2
#b = 7
#n = 33
# new example
# a = 2 # encrypt
# b = 7
# a = 29 # decrypt
# b = 3
# n = 33
## massive example
# encrypt
# a = 1976620216402300889624482718775150
# b = 65537
# decrypt
# a = 35052111338673026690212423937053328511880760811579981620642802346685810623109850235943049080973386241113784040794704193978215378499765413083646438784740952306932534945195080183861574225226218879827232453912820596886440377536082465681750074417459151485407445862511023472235560823053497791518928820272257787786
# b = 89489425009274444368228545921773093919669586065884257445497854456487674839629818390934941973262879616797970608917283679875499331574161113854088813275488110588247193077582527278437906504015680623423550067240042466665654232383502922215493623289472138866445818789127946123407807725702626644091036502372545139713
# n = 145906768007583323230186939349070635292401872375357164399581871019873438799005358938369571402670149802121818086292467422828157022922076746906543401224889672472407926969987100581290103199317858753663710862357656510507883714297115637342788911463535102712032765166518411726859837988672111837205085526346618740053
# n = 1003376531
# #test
# a = 55
# b = 65537
#n = 555427658531
#a = 365122258834
#b = 126513109889
print("result: " + str(common.mod_exp(a, b, n)))
def createTestStringME(base, exp, mod, bits):
base_b = binaryString(base, bits)
exp_b = binaryString(exp, bits)
mod_b = binaryString(mod, bits)
wait_time = waitTime(bits, modular_exponentiation)
m_res = common.mod_exp(base, exp, mod)
m_res_b = binaryString(m_res, bits)
return ("\tREPORT \"Begin test case for base=%(base)d, exp=%(exp)d, mod=%(mod)d\";\n"
"\tREPORT \"Expected output is %(m_res)d, %(m_res_b)s\";\n"
"\tN_in <= \"%(base_b)s\";\n"
"\tExp_in <= \"%(exp_b)s\";\n"
"\tM_in <= \"%(mod_b)s\";\n"
"\twait for %(wait_time)d * clk_period;\n"
"\tASSERT(C_out = \"%(m_res_b)s\") REPORT \"test failed\" SEVERITY NOTE;\n\n"
% locals())
