# This file is dual licensed under the terms of the Apache License, Version # 2.0, and the BSD License. See the LICENSE file in the root of this repository # for complete details. from __future__ import absolute_import, division, print_function import binascii from cryptography.hazmat.backends import default_backend from cryptography.hazmat.primitives.ciphers import algorithms, base, modes def encrypt(mode, key, iv, plaintext): cipher = base.Cipher( algorithms.CAST5(binascii.unhexlify(key)), mode(binascii.unhexlify(iv)), default_backend() ) encryptor = cipher.encryptor() ct = encryptor.update(binascii.unhexlify(plaintext)) ct += encryptor.finalize() return binascii.hexlify(ct) def build_vectors(mode, filename): vector_file = open(filename, "r") count = 0 output = [] key = None iv = None plaintext = None for line in vector_file: line = line.strip() if line.startswith("KEY"): if count != 0: output.append("CIPHERTEXT = {}".format( encrypt(mode, key, iv, plaintext)) ) output.append("\nCOUNT = {}".format(count)) count += 1 name, key = line.split(" = ") output.append("KEY = {}".format(key)) elif line.startswith("IV"): name, iv = line.split(" = ") iv = iv[0:16] output.append("IV = {}".format(iv)) elif line.startswith("PLAINTEXT"): name, plaintext = line.split(" = ") output.append("PLAINTEXT = {}".format(plaintext)) output.append("CIPHERTEXT = {}".format(encrypt(mode, key, iv, plaintext))) return "\n".join(output) def write_file(data, filename): with open(filename, "w") as f: f.write(data) cbc_path = "tests/hazmat/primitives/vectors/ciphers/AES/CBC/CBCMMT128.rsp" write_file(build_vectors(modes.CBC, cbc_path), "cast5-cbc.txt") ofb_path = "tests/hazmat/primitives/vectors/ciphers/AES/OFB/OFBMMT128.rsp" write_file(build_vectors(modes.OFB, ofb_path), "cast5-ofb.txt") cfb_path = "tests/hazmat/primitives/vectors/ciphers/AES/CFB/CFB128MMT128.rsp" write_file(build_vectors(modes.CFB, cfb_path), "cast5-cfb.txt") ctr_path = "tests/hazmat/primitives/vectors/ciphers/AES/CTR/aes-128-ctr.txt" write_file(build_vectors(modes.CTR, ctr_path), "cast5-ctr.txt") ion value='author'>author
path: root/src/_cffi_src/openssl/crypto.py
blob: 03672d55ed4997e22694abaef453570d79cdcbc6 (plain) 
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