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Editing: verify_idea.py
import binascii import botan from tests.utils import load_nist_vectors BLOCK_SIZE = 64 def encrypt(mode, key, iv, plaintext): encryptor = botan.Cipher( f"IDEA/{mode}/NoPadding", "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) 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"] cbc_path = "tests/hazmat/primitives/vectors/ciphers/IDEA/idea-cbc.txt" verify_vectors("CBC", cbc_path) ofb_path = "tests/hazmat/primitives/vectors/ciphers/IDEA/idea-ofb.txt" verify_vectors("OFB", ofb_path) cfb_path = "tests/hazmat/primitives/vectors/ciphers/IDEA/idea-cfb.txt" verify_vectors("CFB", cfb_path)
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