def testElGamal(self):
groupObj = ECGroup(prime192v2)
el = ElGamal(groupObj)
(pk, sk) = el.keygen()
msg = b"hello world!"
cipher1 = el.encrypt(pk, msg)
m = el.decrypt(pk, sk, cipher1)
assert m == msg, "Failed Decryption!!!"
if debug: print("SUCCESSFULLY DECRYPTED!!!")
def testElGamal(self):
groupObj = ECGroup(prime192v2)
el = ElGamal(groupObj)
(pk, sk) = el.keygen()
msg = b"hello world!"
cipher1 = el.encrypt(pk, msg)
m = el.decrypt(pk, sk, cipher1)
assert m == msg, "Failed Decryption!!!"
if debug: print("SUCCESSFULLY DECRYPTED!!!")
def testElGamal(self):
groupObj = ECGroup(prime192v2)
el = ElGamal(groupObj)
(pk, sk) = el.keygen()
# message len should be group.bitsize() len for prime192v1 (or 20 bytes)
msg = b'the hello world msg1'
cipher1 = el.encrypt(pk, msg)
m = el.decrypt(pk, sk, cipher1)
assert m == msg, "Failed Decryption!!!"
if debug: print("SUCCESSFULLY DECRYPTED!!!")
def testElGamal(self):
p = integer(148829018183496626261556856344710600327516732500226144177322012998064772051982752493460332138204351040296264880017943408846937646702376203733370973197019636813306480144595809796154634625021213611577190781215296823124523899584781302512549499802030946698512327294159881907114777803654670044046376468983244647367)
q = integer(74414509091748313130778428172355300163758366250113072088661006499032386025991376246730166069102175520148132440008971704423468823351188101866685486598509818406653240072297904898077317312510606805788595390607648411562261949792390651256274749901015473349256163647079940953557388901827335022023188234491622323683)
groupObj = IntegerGroupQ()
el = ElGamal(groupObj, p, q)
(pk, sk) = el.keygen()
msg = b"hello world!"
cipher1 = el.encrypt(pk, msg)
m = el.decrypt(pk, sk, cipher1)
assert m == msg, "Failed Decryption!!!"
if debug: print("SUCCESSFULLY DECRYPTED!!!")
def el_gamal_cryptosystem():
from charm.toolbox.eccurve import prime192v2
from charm.toolbox.ecgroup import ECGroup
from charm.schemes.pkenc.pkenc_elgamal85 import ElGamal
groupObj = ECGroup(prime192v2)
el = ElGamal(groupObj)
(public_key, secret_key) = el.keygen()
msg = b"hello world!12345678"
cipher_text = el.encrypt(public_key, msg)
decrypted_msg = el.decrypt(public_key, secret_key, cipher_text)
print(decrypted_msg == msg)
def testElGamal(self):
p = integer(
148829018183496626261556856344710600327516732500226144177322012998064772051982752493460332138204351040296264880017943408846937646702376203733370973197019636813306480144595809796154634625021213611577190781215296823124523899584781302512549499802030946698512327294159881907114777803654670044046376468983244647367
)
q = integer(
74414509091748313130778428172355300163758366250113072088661006499032386025991376246730166069102175520148132440008971704423468823351188101866685486598509818406653240072297904898077317312510606805788595390607648411562261949792390651256274749901015473349256163647079940953557388901827335022023188234491622323683
)
groupObj = IntegerGroupQ()
el = ElGamal(groupObj, p, q)
(pk, sk) = el.keygen()
msg = b"hello world!"
cipher1 = el.encrypt(pk, msg)
m = el.decrypt(pk, sk, cipher1)
assert m == msg, "Failed Decryption!!!"
if debug: print("SUCCESSFULLY DECRYPTED!!!")
def testHybridEnc(self):
groupObj = ECGroup(prime192v1)
pkenc = ElGamal(groupObj)
hyenc = HybridEnc(pkenc, msg_len=groupObj.bitsize())
(pk, sk) = hyenc.keygen()
# message len should be group.bitsize() len for prime192v1 (or 20 bytes)
m = b'the hello world msg1'
cipher = hyenc.encrypt(pk, m)
orig_m = hyenc.decrypt(pk, sk, cipher)
assert m == orig_m, "Failed Decryption"
if debug: print("Successful Decryption!!")
def testHybridEnc(self):
# pkenc = EC_CS98(prime192v1)
groupObj = ECGroup(prime192v1)
pkenc = ElGamal(groupObj)
hyenc = HybridEnc(pkenc)
(pk, sk) = hyenc.keygen()
m = b'this is a new message'
cipher = hyenc.encrypt(pk, m)
orig_m = hyenc.decrypt(pk, sk, cipher)
assert m == orig_m, "Failed Decryption"
if debug: print("Successful Decryption!!")
