SHA256 a8c806bfdbd6a30f21e42847caa5899426db5325a369ea4e429f0c7223224ac8

botan_idea_vectors.py

import binascii

import botan

BLOCK_SIZE = 64


def encrypt(key, iv, plaintext):
    encryptor = botan.Cipher("IDEA/CFB", "encrypt",
                             binascii.unhexlify(key))

    cipher_text = encryptor.cipher(binascii.unhexlify(plaintext),
                                   binascii.unhexlify(iv))
    return binascii.hexlify(cipher_text)


vector_file = open(
    "../cryptography/tests/hazmat/primitives/vectors/ciphers/AES/CFB/CFB128MMT128.rsp",
    "r"
)

count = 0
output = []
key = None
iv = None
plaintext = None
ct = None
for line in vector_file:
    line = line.strip()
    if line.startswith("KEY"):
        if count != 0:
            output.append("CIPHERTEXT = {}".format(
                encrypt(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[:BLOCK_SIZE//8*2]
        output.append("IV = {}".format(iv))
    elif line.startswith("PLAINTEXT"):
        name, plaintext = line.split(" = ")
        output.append("PLAINTEXT = {}".format(plaintext))

output.append("CIPHERTEXT = {}".format(encrypt(key, iv, plaintext)))
print("\n".join(output))