import binascii from cryptography.hazmat.backends.openssl.backend import backend from cryptography.hazmat.primitives.ciphers import algorithms, base, modes def encrypt(mode, key, iv, plaintext): cipher = base.Cipher( algorithms.SEED(binascii.unhexlify(key)), mode(binascii.unhexlify(iv)), backend ) encryptor = cipher.encryptor() ct = encryptor.update(binascii.unhexlify(plaintext)) ct += encryptor.finalize() return binascii.hexlify(ct) def build_vectors(mode, filename): with open(filename, "r") as f: vector_file = f.read().splitlines() 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 = {0}".format( encrypt(mode, key, iv, plaintext)) ) output.append("\nCOUNT = {0}".format(count)) count += 1 name, key = line.split(" = ") output.append("KEY = {0}".format(key)) elif line.startswith("IV"): name, iv = line.split(" = ") output.append("IV = {0}".format(iv)) elif line.startswith("PLAINTEXT"): name, plaintext = line.split(" = ") output.append("PLAINTEXT = {0}".format(plaintext)) output.append("CIPHERTEXT = {0}".format(encrypt(mode, key, iv, plaintext))) return "\n".join(output) def write_file(data, filename): with open(filename, "w") as f: f.write(data) OFB_PATH = "vectors/cryptography_vectors/ciphers/AES/OFB/OFBMMT128.rsp" write_file(build_vectors(modes.OFB, OFB_PATH), "seed-ofb.txt") CFB_PATH = "vectors/cryptography_vectors/ciphers/AES/CFB/CFB128MMT128.rsp" write_file(build_vectors(modes.CFB, CFB_PATH), "seed-cfb.txt") ommit/docs/development/custom-vectors/seed/generate_seed.py?id=311722e330f9a7d89bb17943846b13e3b9e010bf'>commitdiffstats
path: root/docs/development/custom-vectors/seed/generate_seed.py
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