def encrypt_message(plaintext, publickey):
# encrypt the message
# privateKey is a elgamal object
# return elgamal.encrypt(publicKey, plaintext)
cypher_int = encrypt(publickey, plaintext)
cypher_compressed = '|'.join(key_compress(int(n)) for n in cypher_int.strip(' ').split(' '))
return cypher_compressed
def test_roundtrip_stored_twitter_key(self):
pub = assemble_publickey(h1_keys['PublicKeyTwitter'])
prk = h1_keys['PrivateKey']
priv = assemble_privatekey((prk['p'], prk['g'], prk['x'], prk['iNumBits']))
c = 0
while c < 100:
# message = "My name is Ryan. Here is some french text: Maître Corbeau, sur un arbre perché. Now some Chinese: 鋈 晛桼桾 枲柊氠 藶藽 歾炂盵 犈犆犅 壾, 軹軦軵 寁崏庲 摮 蟼襛 蝩覤 蜭蜸覟 駽髾髽 忷扴汥 "
message = self.id_generator(500)
cipher = encrypt(pub, message)
plain = decrypt(priv, cipher)
assert message == plain
c += 1
def test_roundtrip_plain(self):
keys = generate_keys()
priv = keys['privateKey']
pub = keys['publicKey']
c = 0
while c < 1000:
# message = "My name is Ryan. Here is some french text: Maître Corbeau, sur un arbre perché. Now some Chinese: 鋈 晛桼桾 枲柊氠 藶藽 歾炂盵 犈犆犅 壾, 軹軦軵 寁崏庲 摮 蟼襛 蝩覤 蜭蜸覟 駽髾髽 忷扴汥 "
message = self.id_generator(500)
cipher = encrypt(pub, message)
plain = decrypt(priv, cipher)
assert message == plain
c += 1
def test_simple_encrypt_decrypt(self):
"""
does not use message and key compression
"""
plaintext = 'Hello Twitter world in 140 characters.'
pub = assemble_publickey(h1_keys['PublicKeyTwitter'])
encrypted = encrypt(pub, plaintext)
# print(encrypted)
prk = h1_keys['PrivateKey']
#ints is a tuple if (p, g, x, iNumBits)
priv = assemble_privatekey((prk['p'], prk['g'], prk['x'], prk['iNumBits']))
plaintext = decrypt(priv, encrypted)
print(plaintext)