diff options
author | Siddharth Ravikumar <sravik@bgsu.edu> | 2015-01-12 16:53:36 -0500 |
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committer | Siddharth Ravikumar <sravik@bgsu.edu> | 2015-01-12 16:53:36 -0500 |
commit | 154a3d5fcbf5962859fd0d345645060b27223690 (patch) | |
tree | aeb6a8bf3079dfed3b7b8fa7029e906ae75b0f17 /combox/crypto.py | |
parent | 286421c30599dee1f1aaee500f3bfed0bada6c5f (diff) |
consolidated everything into combox/combox.py.
tests were removed. will write tests using `nose` later.
renamed: combox/file.py -> combox/combox.py
deleted: combox/config.py
deleted: combox/crypto.py
renamed: tests/test_config.py -> tests/combox_tests.py
deleted: tests/files/the-red-star.jpg
deleted: tests/test_crypto.py
deleted: tests/test_file.py
Diffstat (limited to 'combox/crypto.py')
-rw-r--r-- | combox/crypto.py | 84 |
1 files changed, 0 insertions, 84 deletions
diff --git a/combox/crypto.py b/combox/crypto.py deleted file mode 100644 index 3f17cc0..0000000 --- a/combox/crypto.py +++ /dev/null @@ -1,84 +0,0 @@ -# Copyright (C) 2014 Combox author(s). See AUTHORS. -# -# This file is part of Combox. -# -# Combox is free software: you can redistribute it and/or modify it -# under the terms of the GNU General Public License as published by -# the Free Software Foundation, either version 3 of the License, or -# (at your option) any later version. -# -# Combox is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -# General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with Combox (see COPYING). If not, see -# <http://www.gnu.org/licenses/>. - -## Adapted from https://gist.github.com/sekondus/4322469 - -import base64 -import os - -from Crypto.Cipher import AES - -BLOCK_SIZE = 32 -PAD_CHAR = '#' - - -def pad(data): - """Pad data such that its length is a multiple of BLOCK_SIZE. - """ - - padding = (BLOCK_SIZE - (len(data) % BLOCK_SIZE)) * PAD_CHAR - data += padding - - return data - - -def encrypt(data, secret): - """Encrypt byestream and return cipher. - """ - aes = AES.new(pad(secret)) - cipher = base64.b64encode(aes.encrypt(pad(data))) - - return cipher - - -def decrypt(cipher, secret): - """Decrypt cipher and return data. - """ - aes = AES.new(pad(secret)) - data = aes.decrypt(base64.b64decode(cipher)).rstrip(PAD_CHAR) - - return data - -def encrypt_shards(shards, secret): - """Encrypt the shards of data and return a list of ciphers. - - shards: list of shards (string, bytes). - secret: top secret passphrase - """ - - ciphers = [] - for shard in shards: - cipher = encrypt(shard, secret) - ciphers.append(cipher) - - return ciphers - - -def decrypt_shards(ciphers, secret): - """Decrypt the ciphered shards and return a list of shards. - - shards: list of ciphered shards. - secret: top secret passphrase - """ - - shards = [] - for cipher in ciphers: - shard = decrypt(cipher, secret) - shards.append(shard) - - return shards |