__ __ __ __ _____ _ _ _____ _ _ _
| \/ | \ \ / / | __ \ (_) | | / ____| | | | |
| \ / |_ __\ V / | |__) | __ ___ ____ _| |_ ___ | (___ | |__ ___| | |
| |\/| | '__|> < | ___/ '__| \ \ / / _` | __/ _ \ \___ \| '_ \ / _ \ | |
| | | | |_ / . \ | | | | | |\ V / (_| | || __/ ____) | | | | __/ | |
|_| |_|_(_)_/ \_\ |_| |_| |_| \_/ \__,_|\__\___| |_____/|_| |_|\___V 2.1
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For_More_Tools:
import binascii
import botan
from tests.utils import load_nist_vectors
BLOCK_SIZE = 64
def encrypt(mode, key, iv, plaintext):
encryptor = botan.Cipher(
"IDEA/{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"]
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)