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generate_seed.py
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verify_seed.py
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import binascii import botan from tests.utils import load_nist_vectors def encrypt(mode, key, iv, plaintext): encryptor = botan.Cipher("SEED/{0}/NoPadding".format(mode), "encrypt", binascii.unhexlify(key)) cipher_text = encryptor.cipher(binascii.unhexlify(plaintext), binascii.unhexlify(iv)) return binascii.hexlify(cipher_text) def verify_vectors(mode, filename): with open(filename, "r") as f: vector_file = f.read().splitlines() vectors = load_nist_vectors(vector_file) for vector in vectors: ct = encrypt( mode, vector["key"], vector["iv"], vector["plaintext"] ) assert ct == vector["ciphertext"] ofb_path = "vectors/cryptography_vectors/ciphers/SEED/seed-ofb.txt" verify_vectors("OFB", ofb_path) cfb_path = "vectors/cryptography_vectors/ciphers/SEED/seed-cfb.txt" verify_vectors("CFB", cfb_path)
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