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Second version of encrypt

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This commit is contained in:
louis chauvet 2018-11-16 19:59:22 +01:00
parent 21679ebb92
commit c844449871
4 changed files with 77 additions and 79 deletions
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17
client/main.py
View File

@ -14,7 +14,7 @@ import threading
from Crypto.Cipher import PKCS1_OAEP from Crypto.Cipher import PKCS1_OAEP
from Crypto.PublicKey import RSA from Crypto.PublicKey import RSA
from Crypto.Cipher import PKCS1_OAEP
class Decoder(json.JSONDecoder): class Decoder(json.JSONDecoder):
def decode(self, s, **kwargs): def decode(self, s, **kwargs):
@ -101,21 +101,20 @@ print('ok')
chunk = clientSocket.recv(BUFFER_SIZE) chunk = clientSocket.recv(BUFFER_SIZE)
print(chunk) print(chunk)
# HEADER # HEADER
cry_header = clientSocket.recv(BUFFER_SIZE).rstrip(b';') crypted = clientSocket.recv(BUFFER_SIZE).rstrip(b';')
print(cry_header)
# AESKEY # AESKEY
cry_aeskey = clientSocket.recv(BUFFER_SIZE).rstrip(b";") for i in range(60):
print(cry_aeskey) crypted += clientSocket.recv(BUFFER_SIZE).rstrip(b";")
# END # END
chunk = clientSocket.recv(BUFFER_SIZE) chunk = clientSocket.recv(BUFFER_SIZE)
print(chunk) print(chunk)
# HEADER+AES key are encypted in same time, so decrypt thme at same time # HEADER+AES key are encypted in same time, so decrypt thme at same time
cipher_rsa = PKCS1_OAEP.new(key) cipher_rsa = PKCS1_OAEP.new(key)
t = cry_header+cry_aeskey texte = b''
for to_decrypt in [t[i:i + int(len(public_key)/16)] for i in range(0, len(t), int(len(public_key)/16))]: for to_decrypt in [crypted[i:i + int(BUFFER_SIZE/8)] for i in range(0, len(crypted), int(BUFFER_SIZE/8))]:
print(len(to_decrypt)) texte += cipher_rsa.decrypt(to_decrypt)
print(cipher_rsa.decrypt(to_decrypt)) print(texte.decode('ascii'))

98
client/private.pem
View File

@ -1,51 +1,51 @@
-----BEGIN RSA PRIVATE KEY----- -----BEGIN RSA PRIVATE KEY-----
MIIJKAIBAAKCAgEAvlMf7Wn+JRaFR4ErqgpQA3m86J++XPRZrKK6UJtdUqGI3Xug MIIJKQIBAAKCAgEArUCxN8128/Zck+vS0xtRwvQFhsl44wV8I5987RNdU/sYFkoG
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-----END RSA PRIVATE KEY----- -----END RSA PRIVATE KEY-----

24
client/receiver.pem
View File

@ -1,14 +1,14 @@
-----BEGIN PUBLIC KEY----- -----BEGIN PUBLIC KEY-----
MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAvlMf7Wn+JRaFR4ErqgpQ MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEArUCxN8128/Zck+vS0xtR
A3m86J++XPRZrKK6UJtdUqGI3XugiqbYUSr2n5+LOlfPNDQ6okcqGX+uJFaetWii wvQFhsl44wV8I5987RNdU/sYFkoGCkMLFiXXhrcsYhzEEyKQ6ci+4OtwPtXuY9hE
JLqzYvl+UjXwDK/jvCwlHvnjmViUw0MDzKyVfiNfwWAsoQXuQqk+vJWwyFuskxXI 8XWnmd16T6ypct41oRoCVzrlrwMsZ1rg4M5ZnuQIb+7DJmIDHn3LjYF1yDC1XhoG
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I7AY9qPiuetrdW6EK5Xittc0gaeFSXwXoBAZStGk1rKy2HP1nMsfzv7MjMdqtPhI FRIRomItyTeudn412nyZcd/tOakZ5X9k2eb/xuM0gsmoe9Ern1Z9OaUTHmolAK/E
CJ+LjgilL/ZhhfqNWwSWdIkCAwEAAQ== z0AzpZR3VID1JVgUhpqsA1UCAwEAAQ==
-----END PUBLIC KEY----- -----END PUBLIC KEY-----

17
server/main.py
View File

@ -151,7 +151,7 @@ class clientThread(threading.Thread):
debug("Réception de la clef RSA de %s", self.ip) debug("Réception de la clef RSA de %s", self.ip)
self.rsa_client = content.rstrip(b";").rstrip(b' ') self.rsa_client = content.rstrip(b";").rstrip(b' ')
self.aes_key = get_random_bytes(64) self.aes_key = get_random_bytes(64)
header = bytes((VERSION+"\ntype: init").ljust(BUFFER_SIZE, "-"), 'ascii') header = bytes((VERSION+"\ntype: init").ljust(BUFFER_SIZE, ";"), 'ascii')
content = self.aes_key.ljust(BUFFER_SIZE, b";") content = self.aes_key.ljust(BUFFER_SIZE, b";")
self.send_rsa(header+content) self.send_rsa(header+content)
return return
@ -166,19 +166,18 @@ class clientThread(threading.Thread):
# RSA crypter object # RSA crypter object
cipher_rsa = PKCS1_OAEP.new(recipient_key) cipher_rsa = PKCS1_OAEP.new(recipient_key)
# Encrypt session_key # Encrypt session_key
self.client.send(BEGIN_MESSAGE) crypted = b""
for to_send_text in [to_send[i:i + BUFFER_SIZE] for i in range(0, len(to_send), BUFFER_SIZE)]: for to_send_text in [to_send[i:i + 16] for i in range(0, len(to_send), 16)]:
crypted = b"" crypted += cipher_rsa.encrypt(to_send_text)
for to_send_text_ in [to_send_text[i:i+int(len(self.rsa_client)/16)] for i in range(0, len(to_send_text), int(len(self.rsa_client)/16))]: self.send(crypted)
print(len(to_send_text_))
crypted += cipher_rsa.encrypt(to_send_text_)
self.client.send(crypted.ljust(BUFFER_SIZE, b';'))
self.client.send(END_MESSAGE)
def send(self, to_send): def send(self, to_send):
self.client.send(BEGIN_MESSAGE) self.client.send(BEGIN_MESSAGE)
i=0
for to_send_text in [to_send[i:i + BUFFER_SIZE] for i in range(0, len(to_send), BUFFER_SIZE)]: for to_send_text in [to_send[i:i + BUFFER_SIZE] for i in range(0, len(to_send), BUFFER_SIZE)]:
self.client.send(to_send_text.ljust(BUFFER_SIZE, b";")) self.client.send(to_send_text.ljust(BUFFER_SIZE, b";"))
i+=1
print(i)
self.client.send(END_MESSAGE) self.client.send(END_MESSAGE)