pre { line-height: 125%; margin: 0; }
td.linenos pre { color: #000000; background-color: #f0f0f0; padding: 0 5px 0 5px; }
span.linenos { color: #000000; background-color: #f0f0f0; padding: 0 5px 0 5px; }
td.linenos pre.special { color: #000000; background-color: #ffffc0; padding: 0 5px 0 5px; }
span.linenos.special { color: #000000; background-color: #ffffc0; padding: 0 5px 0 5px; }
.highlight .hll { background-color: #ffffcc }
.highlight { background: #ffffff; }
.highlight .c { color: #888888 } /* Comment */
.highlight .err { color: #a61717; background-color: #e3d2d2 } /* Error */
.highlight .k { color: #008800; font-weight: bold } /* Keyword */
.highlight .ch { color: #888888 } /* Comment.Hashbang */
.highlight .cm { color: #888888 } /* Comment.Multiline */
.highl
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)