def downloadfile(self, file, dest_path):
dl_url = self.api_req({'a': 'g', 'g': 1, 'n': file['h']})['g']
infile = urllib.urlopen(dl_url)
outfile = open(dest_path, 'wb')
decryptor = AES.new(a32_to_str(file['k']), AES.MODE_CTR, counter = Counter.new(128, initial_value = ((file['iv'][0] << 32) + file['iv'][1]) << 64))
file_mac = [0, 0, 0, 0]
for chunk_start, chunk_size in sorted(get_chunks(file['s']).items()):
chunk = infile.read(chunk_size)
chunk = decryptor.decrypt(chunk)
outfile.write(chunk)
chunk_mac = [file['iv'][0], file['iv'][1], file['iv'][0], file['iv'][1]]
for i in xrange(0, len(chunk), 16):
block = chunk[i:i+16]
if len(block) % 16:
block += '\0' * (16 - (len(block) % 16))
block = str_to_a32(block)
chunk_mac = [chunk_mac[0] ^ block[0], chunk_mac[1] ^ block[1], chunk_mac[2] ^ block[2], chunk_mac[3] ^ block[3]]
chunk_mac = aes_cbc_encrypt_a32(chunk_mac, file['k'])
file_mac = [file_mac[0] ^ chunk_mac[0], file_mac[1] ^ chunk_mac[1], file_mac[2] ^ chunk_mac[2], file_mac[3] ^ chunk_mac[3]]
file_mac = aes_cbc_encrypt_a32(file_mac, file['k'])
outfile.close()
infile.close()
return (file_mac[0] ^ file_mac[1], file_mac[2] ^ file_mac[3]) == file['meta_mac']
def downloadfile(self, file, dest_path):
dl_url = self.api_req({'a': 'g', 'g': 1, 'n': file['h']})['g']
infile = urllib.urlopen(dl_url)
outfile = open(dest_path, 'wb')
decryptor = AES.new(
a32_to_str(file['k']),
AES.MODE_CTR,
counter=Counter.new(
128,
initial_value=((file['iv'][0] << 32) + file['iv'][1]) << 64))
file_mac = [0, 0, 0, 0]
for chunk_start, chunk_size in sorted(get_chunks(file['s']).items()):
chunk = infile.read(chunk_size)
chunk = decryptor.decrypt(chunk)
outfile.write(chunk)
chunk_mac = [
file['iv'][0], file['iv'][1], file['iv'][0], file['iv'][1]
]
for i in xrange(0, len(chunk), 16):
block = chunk[i:i + 16]
if len(block) % 16:
block += '\0' * (16 - (len(block) % 16))
block = str_to_a32(block)
chunk_mac = [
chunk_mac[0] ^ block[0], chunk_mac[1] ^ block[1],
chunk_mac[2] ^ block[2], chunk_mac[3] ^ block[3]
]
chunk_mac = aes_cbc_encrypt_a32(chunk_mac, file['k'])
file_mac = [
file_mac[0] ^ chunk_mac[0], file_mac[1] ^ chunk_mac[1],
file_mac[2] ^ chunk_mac[2], file_mac[3] ^ chunk_mac[3]
]
file_mac = aes_cbc_encrypt_a32(file_mac, file['k'])
outfile.close()
infile.close()
return (file_mac[0] ^ file_mac[1],
file_mac[2] ^ file_mac[3]) == file['meta_mac']
def uploadfile(self, src_path, target, filename):
infile = open(src_path, 'rb')
size = os.path.getsize(src_path)
ul_url = self.api_req({'a': 'u', 's': size})['p']
ul_key = [random.randint(0, 0xFFFFFFFF) for _ in xrange(6)]
encryptor = AES.new(a32_to_str(ul_key[:4]), AES.MODE_CTR, counter = Counter.new(128, initial_value = ((ul_key[4] << 32) + ul_key[5]) << 64))
file_mac = [0, 0, 0, 0]
for chunk_start, chunk_size in sorted(get_chunks(size).items()):
chunk = infile.read(chunk_size)
chunk_mac = [ul_key[4], ul_key[5], ul_key[4], ul_key[5]]
for i in xrange(0, len(chunk), 16):
block = chunk[i:i+16]
if len(block) % 16:
block += '\0' * (16 - len(block) % 16)
block = str_to_a32(block)
chunk_mac = [chunk_mac[0] ^ block[0], chunk_mac[1] ^ block[1], chunk_mac[2] ^ block[2], chunk_mac[3] ^ block[3]]
chunk_mac = aes_cbc_encrypt_a32(chunk_mac, ul_key[:4])
file_mac = [file_mac[0] ^ chunk_mac[0], file_mac[1] ^ chunk_mac[1], file_mac[2] ^ chunk_mac[2], file_mac[3] ^ chunk_mac[3]]
file_mac = aes_cbc_encrypt_a32(file_mac, ul_key[:4])
chunk = encryptor.encrypt(chunk)
outfile = urllib.urlopen(ul_url + "/" + str(chunk_start), chunk)
completion_handle = outfile.read()
outfile.close()
infile.close()
meta_mac = (file_mac[0] ^ file_mac[1], file_mac[2] ^ file_mac[3])
attributes = {'n': filename}
enc_attributes = enc_attr(attributes, ul_key[:4])
key = [ul_key[0] ^ ul_key[4], ul_key[1] ^ ul_key[5], ul_key[2] ^ meta_mac[0], ul_key[3] ^ meta_mac[1], ul_key[4], ul_key[5], meta_mac[0], meta_mac[1]]
return self.api_req({'a': 'p', 't': target, 'n': [{'h': completion_handle, 't': 0, 'a': base64urlencode(enc_attributes), 'k': a32_to_base64(encrypt_key(key, self.master_key))}]})
def uploadfile(self, src_path, target, filename):
infile = open(src_path, 'rb')
size = os.path.getsize(src_path)
ul_url = self.api_req({'a': 'u', 's': size})['p']
ul_key = [random.randint(0, 0xFFFFFFFF) for _ in xrange(6)]
encryptor = AES.new(
a32_to_str(ul_key[:4]),
AES.MODE_CTR,
counter=Counter.new(
128, initial_value=((ul_key[4] << 32) + ul_key[5]) << 64))
file_mac = [0, 0, 0, 0]
for chunk_start, chunk_size in sorted(get_chunks(size).items()):
chunk = infile.read(chunk_size)
chunk_mac = [ul_key[4], ul_key[5], ul_key[4], ul_key[5]]
for i in xrange(0, len(chunk), 16):
block = chunk[i:i + 16]
if len(block) % 16:
block += '\0' * (16 - len(block) % 16)
block = str_to_a32(block)
chunk_mac = [
chunk_mac[0] ^ block[0], chunk_mac[1] ^ block[1],
chunk_mac[2] ^ block[2], chunk_mac[3] ^ block[3]
]
chunk_mac = aes_cbc_encrypt_a32(chunk_mac, ul_key[:4])
file_mac = [
file_mac[0] ^ chunk_mac[0], file_mac[1] ^ chunk_mac[1],
file_mac[2] ^ chunk_mac[2], file_mac[3] ^ chunk_mac[3]
]
file_mac = aes_cbc_encrypt_a32(file_mac, ul_key[:4])
chunk = encryptor.encrypt(chunk)
outfile = urllib.urlopen(ul_url + "/" + str(chunk_start), chunk)
completion_handle = outfile.read()
outfile.close()
infile.close()
meta_mac = (file_mac[0] ^ file_mac[1], file_mac[2] ^ file_mac[3])
attributes = {'n': filename}
enc_attributes = enc_attr(attributes, ul_key[:4])
key = [
ul_key[0] ^ ul_key[4], ul_key[1] ^ ul_key[5],
ul_key[2] ^ meta_mac[0], ul_key[3] ^ meta_mac[1], ul_key[4],
ul_key[5], meta_mac[0], meta_mac[1]
]
return self.api_req({
'a':
'p',
't':
target,
'n': [{
'h': completion_handle,
't': 0,
'a': base64urlencode(enc_attributes),
'k': a32_to_base64(encrypt_key(key, self.master_key))
}]
})
