/usr/lib/python2.7/dist-packages/cryptography_vectors/ciphers/AES/OFB/ is in python-cryptography-vectors 0.6.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/cryptography_vectors/ciphers/AES/OFB/OFBGFSbox128.rsp
/usr/lib/python2.7/dist-packages/cryptography_vectors/ciphers/AES/OFB/OFBGFSbox192.rsp
/usr/lib/python2.7/dist-packages/cryptography_vectors/ciphers/AES/OFB/OFBGFSbox256.rsp
/usr/lib/python2.7/dist-packages/cryptography_vectors/ciphers/AES/OFB/OFBKeySbox128.rsp
/usr/lib/python2.7/dist-packages/cryptography_vectors/ciphers/AES/OFB/OFBKeySbox192.rsp
/usr/lib/python2.7/dist-packages/cryptography_vectors/ciphers/AES/OFB/OFBKeySbox256.rsp
/usr/lib/python2.7/dist-packages/cryptography_vectors/ciphers/AES/OFB/OFBMMT128.rsp
/usr/lib/python2.7/dist-packages/cryptography_vectors/ciphers/AES/OFB/OFBMMT192.rsp
/usr/lib/python2.7/dist-packages/cryptography_vectors/ciphers/AES/OFB/OFBMMT256.rsp
/usr/lib/python2.7/dist-packages/cryptography_vectors/ciphers/AES/OFB/OFBVarKey128.rsp
/usr/lib/python2.7/dist-packages/cryptography_vectors/ciphers/AES/OFB/OFBVarKey192.rsp
/usr/lib/python2.7/dist-packages/cryptography_vectors/ciphers/AES/OFB/OFBVarKey256.rsp
/usr/lib/python2.7/dist-packages/cryptography_vectors/ciphers/AES/OFB/OFBVarTxt128.rsp
/usr/lib/python2.7/dist-packages/cryptography_vectors/ciphers/AES/OFB/OFBVarTxt192.rsp
/usr/lib/python2.7/dist-packages/cryptography_vectors/ciphers/AES/OFB/OFBVarTxt256.rsp