def decrypt_bigfile(infile, outfile, priv_key):
"""Decrypts an encrypted VARBLOCK file, writing it to 'outfile'
.. deprecated:: 3.4
This function was deprecated in Python-RSA version 3.4 due to security issues
in the VARBLOCK format. See the documentation_ for more information.
.. _documentation: https://stuvel.eu/python-rsa-doc/usage.html#working-with-big-files
:param infile: file-like object to read the crypto in VARBLOCK format from
:param outfile: file-like object to write the cleartext to
:param priv_key: :py:class:`rsa.PrivateKey` to decrypt with
"""
warnings.warn("The 'rsa.bigfile.decrypt_bigfile' function was deprecated in Python-RSA version "
"3.4 due to security issues in the VARBLOCK format. See "
"https://stuvel.eu/python-rsa-doc/usage.html#working-with-big-files "
"for more information.",
DeprecationWarning, stacklevel=2)
if not isinstance(priv_key, key.PrivateKey):
raise TypeError('Private key required, but got %r' % priv_key)
for block in varblock.yield_varblocks(infile):
cleartext = pkcs1.decrypt(block, priv_key)
outfile.write(cleartext)
def decrypt_bigfile(infile, outfile, priv_key):
"""Decrypts an encrypted VARBLOCK file, writing it to 'outfile'
.. deprecated:: 3.4
This function was deprecated in Python-RSA version 3.4 due to security issues
in the VARBLOCK format. See the documentation_ for more information.
.. _documentation: https://stuvel.eu/python-rsa-doc/usage.html#working-with-big-files
:param infile: file-like object to read the crypto in VARBLOCK format from
:param outfile: file-like object to write the cleartext to
:param priv_key: :py:class:`rsa.PrivateKey` to decrypt with
"""
warnings.warn("The 'rsa.bigfile.decrypt_bigfile' function was deprecated in Python-RSA version "
"3.4 due to security issues in the VARBLOCK format. See "
"https://stuvel.eu/python-rsa-doc/usage.html#working-with-big-files "
"for more information.",
DeprecationWarning, stacklevel=2)
if not isinstance(priv_key, key.PrivateKey):
raise TypeError('Private key required, but got %r' % priv_key)
for block in varblock.yield_varblocks(infile):
cleartext = pkcs1.decrypt(block, priv_key)
outfile.write(cleartext)
def test_enc_dec(self):
message = struct.pack('>IIII', 0, 0, 0, 1)
print("\tMessage: %r" % message)
encrypted = pkcs1.encrypt(message, self.pub)
print("\tEncrypted: %r" % encrypted)
decrypted = pkcs1.decrypt(encrypted, self.priv)
print("\tDecrypted: %r" % decrypted)
self.assertEqual(message, decrypted)
def test_enc_dec(self):
message = struct.pack('>IIII', 0, 0, 0, 1)
print("\tMessage: %r" % message)
encrypted = pkcs1.encrypt(message, self.pub)
print("\tEncrypted: %r" % encrypted)
decrypted = pkcs1.decrypt(encrypted, self.priv)
print("\tDecrypted: %r" % decrypted)
self.assertEqual(message, decrypted)
def decrypt_bigfile(infile, outfile, priv_key):
"""Decrypts an encrypted VARBLOCK file, writing it to 'outfile'
:param infile: file-like object to read the crypto in VARBLOCK format from
:param outfile: file-like object to write the cleartext to
:param priv_key: :py:class:`rsa.PrivateKey` to decrypt with
"""
if not isinstance(priv_key, key.PrivateKey):
raise TypeError('Private key required, but got %r' % priv_key)
for block in varblock.yield_varblocks(infile):
cleartext = pkcs1.decrypt(block, priv_key)
outfile.write(cleartext)
def decrypt_bigfile(infile, outfile, priv_key):
'''Decrypts an encrypted VARBLOCK file, writing it to 'outfile'
:param infile: file-like object to read the crypto in VARBLOCK format from
:param outfile: file-like object to write the cleartext to
:param priv_key: :py:class:`rsa.PrivateKey` to decrypt with
'''
if not isinstance(priv_key, key.PrivateKey):
raise TypeError('Private key required, but got %r' % priv_key)
for block in varblock.yield_varblocks(infile):
cleartext = pkcs1.decrypt(block, priv_key)
outfile.write(cleartext)
def decrypt(ciphertext, private_key):
cleartext = cry.decrypt(ciphertext, private_key)
return cleartext
def decrypt_bigfile(infile, outfile, priv_key):
if not isinstance(priv_key, key.PrivateKey):
raise TypeError('Private key required, but got %r' % priv_key)
for block in varblock.yield_varblocks(infile):
cleartext = pkcs1.decrypt(block, priv_key)
outfile.write(cleartext)
def decrypt_bigfile(infile, outfile, priv_key):
if not isinstance(priv_key, key.PrivateKey):
raise TypeError('Private key required, but got %r' % priv_key)
for block in varblock.yield_varblocks(infile):
cleartext = pkcs1.decrypt(block, priv_key)
outfile.write(cleartext)
with open('private.pem', mode='rb') as privatefile:
keydata = privatefile.read()
priv_key = rsa.PrivateKey.load_pkcs1(keydata)
with open(inpfile, 'rb') as infile, open(outfile, 'wb') as oufile:
encrypt_bigfile(infile, oufile, pub_key)
key_bytes = common.byte_size(pub_key.n) * BITS
padding_bytes = 11 * BITS
messages = []
ciphers = []
with open(outfile, 'rb') as oufile:
for block in varblock.yield_varblocks(oufile):
cleartext = pkcs1.decrypt(block, priv_key)
message = BitArray(bytes=cleartext).bin
cipher = BitArray(bytes=block).bin
if len(message) == (key_bytes - padding_bytes):
messages.append(np.array(map(int, message)))
ciphers.append(np.array(map(int, cipher)))
messages = np.array(messages)
ciphers = np.array(ciphers)
training_dataset = (messages, ciphers)
with open("m2c_training_dataset.p", "wb") as f:
pickle.dump(training_dataset, f)
'''
