/* * nextpnr -- Next Generation Place and Route * * Copyright (C) 2018 Miodrag Milanovic * Copyright (C) 2018 Serge Bazanski * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. * */ #include "application.h" #include #include #include #include #include #include "log.h" NEXTPNR_NAMESPACE_BEGIN #ifdef _WIN32 #include BOOL WINAPI WinHandler(DWORD dwCtrlType) { if (dwCtrlType == CTRL_C_EVENT) qApp->quit(); return TRUE; } #endif Application::Application(int &argc, char **argv, bool noantialiasing) : QApplication(argc, argv) { QSurfaceFormat fmt; if (!noantialiasing) fmt.setSamples(10); fmt.setProfile(QSurfaceFormat::CoreProfile); // macOS is very picky about this version matching // the version of openGL used in ImGuiRenderer fmt.setMajorVersion(3); fmt.setMinorVersion(2); QSurfaceFormat::setDefaultFormat(fmt); QOpenGLContext glContext; fmt = glContext.format(); if (fmt.majorVersion() < 3) { printf("Could not get OpenGL 3.0 context. Aborting.\n"); log_abort(); } if (fmt.minorVersion() < 2) { printf("Could not get OpenGL 3.2 context - trying anyway...\n "); } #ifdef _WIN32 SetConsoleCtrlHandler((PHANDLER_ROUTINE)WinHandler, TRUE); #endif } bool Application::notify(QObject *receiver, QEvent *event) { bool retVal = true; try { retVal = QApplication::notify(receiver, event); } catch (const assertion_failure &ex) { QString msg; QTextStream out(&msg); out << ex.filename.c_str() << " at " << ex.line << "\n"; out << ex.msg.c_str(); QMessageBox::critical(0, "Error", msg); } catch (...) { QMessageBox::critical(0, "Error", "Fatal error !!!"); } return retVal; } NEXTPNR_NAMESPACE_END type='search' size='10' name='q' value=''/>
path: root/tests/hazmat/backends/test_multibackend.py
blob: 3fa364e29dcfd704fad48e010ef0ac1e86a945a6 (plain) 
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# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from __future__ import absolute_import, division, print_function

from cryptography import utils
from cryptography.exceptions import (
    UnsupportedAlgorithm, _Reasons
)
from cryptography.hazmat.backends.interfaces import (
    CMACBackend, CipherBackend, DSABackend, HMACBackend, HashBackend,
    PBKDF2HMACBackend, RSABackend
)
from cryptography.hazmat.backends.multibackend import MultiBackend
from cryptography.hazmat.primitives import cmac, hashes, hmac
from cryptography.hazmat.primitives.asymmetric import padding
from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes

from ...utils import raises_unsupported_algorithm


@utils.register_interface(CipherBackend)
class DummyCipherBackend(object):
    def __init__(self, supported_ciphers):
        self._ciphers = supported_ciphers

    def cipher_supported(self, algorithm, mode):
        return (type(algorithm), type(mode)) in self._ciphers

    def create_symmetric_encryption_ctx(self, algorithm, mode):
        if not self.cipher_supported(algorithm, mode):
            raise UnsupportedAlgorithm("", _Reasons.UNSUPPORTED_CIPHER)

    def create_symmetric_decryption_ctx(self, algorithm, mode):
        if not self.cipher_supported(algorithm, mode):
            raise UnsupportedAlgorithm("", _Reasons.UNSUPPORTED_CIPHER)


@utils.register_interface(HashBackend)
class DummyHashBackend(object):
    def __init__(self, supported_algorithms):
        self._algorithms = supported_algorithms

    def hash_supported(self, algorithm):
        return type(algorithm) in self._algorithms

    def create_hash_ctx(self, algorithm):
        if not self.hash_supported(algorithm):
            raise UnsupportedAlgorithm("", _Reasons.UNSUPPORTED_HASH)


@utils.register_interface(HMACBackend)
class DummyHMACBackend(object):
    def __init__(self, supported_algorithms):
        self._algorithms = supported_algorithms

    def hmac_supported(self, algorithm):
        return type(algorithm) in self._algorithms

    def create_hmac_ctx(self, key, algorithm):
        if not self.hmac_supported(algorithm):
            raise UnsupportedAlgorithm("", _Reasons.UNSUPPORTED_HASH)


@utils.register_interface(PBKDF2HMACBackend)
class DummyPBKDF2HMACBackend(object):
    def __init__(self, supported_algorithms):
        self._algorithms = supported_algorithms

    def pbkdf2_hmac_supported(self, algorithm):
        return type(algorithm) in self._algorithms

    def derive_pbkdf2_hmac(self, algorithm, length, salt, iterations,
                           key_material):
        if not self.pbkdf2_hmac_supported(algorithm):
            raise UnsupportedAlgorithm("", _Reasons.UNSUPPORTED_HASH)


@utils.register_interface(RSABackend)
class DummyRSABackend(object):
    def generate_rsa_private_key(self, public_exponent, private_key):
        pass

    def create_rsa_signature_ctx(self, private_key, padding, algorithm):
        pass

    def create_rsa_verification_ctx(self, public_key, signature, padding,
                                    algorithm):
        pass

    def mgf1_hash_supported(self, algorithm):
        pass

    def rsa_padding_supported(self, padding):
        pass

    def generate_rsa_parameters_supported(self, public_exponent, key_size):
        pass

    def decrypt_rsa(self, private_key, ciphertext, padding):
        pass

    def encrypt_rsa(self, public_key, plaintext, padding):
        pass


@utils.register_interface(DSABackend)
class DummyDSABackend(object):
    def generate_dsa_parameters(self, key_size):
        pass

    def generate_dsa_private_key(self, parameters):
        pass

    def create_dsa_signature_ctx(self, private_key, algorithm):
        pass

    def create_dsa_verification_ctx(self, public_key, signature, algorithm):
        pass

    def dsa_hash_supported(self, algorithm):
        pass

    def dsa_parameters_supported(self, p, q, g):
        pass


@utils.register_interface(CMACBackend)
class DummyCMACBackend(object):
    def __init__(self, supported_algorithms):
        self._algorithms = supported_algorithms

    def cmac_algorithm_supported(self, algorithm):
        return type(algorithm) in self._algorithms

    def create_cmac_ctx(self, algorithm):
        if not self.cmac_algorithm_supported(algorithm):
            raise UnsupportedAlgorithm("", _Reasons.UNSUPPORTED_CIPHER)


class TestMultiBackend(object):
    def test_ciphers(self):
        backend = MultiBackend([
            DummyHashBackend([]),
            DummyCipherBackend([
                (algorithms.AES, modes.CBC),
            ])
        ])
        assert backend.cipher_supported(
            algorithms.AES(b"\x00" * 16), modes.CBC(b"\x00" * 16)
        )

        cipher = Cipher(
            algorithms.AES(b"\x00" * 16),
            modes.CBC(b"\x00" * 16),
            backend=backend
        )
        cipher.encryptor()
        cipher.decryptor()

        cipher = Cipher(
            algorithms.Camellia(b"\x00" * 16),
            modes.CBC(b"\x00" * 16),
            backend=backend
        )
        with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_CIPHER):
            cipher.encryptor()
        with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_CIPHER):
            cipher.decryptor()

    def test_hashes(self):
        backend = MultiBackend([
            DummyHashBackend([hashes.MD5])
        ])
        assert backend.hash_supported(hashes.MD5())

        hashes.Hash(hashes.MD5(), backend=backend)

        with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_HASH):
            hashes.Hash(hashes.SHA1(), backend=backend)

    def test_hmac(self):
        backend = MultiBackend([
            DummyHMACBackend([hashes.MD5])
        ])
        assert backend.hmac_supported(hashes.MD5())

        hmac.HMAC(b"", hashes.MD5(), backend=backend)

        with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_HASH):
            hmac.HMAC(b"", hashes.SHA1(), backend=backend)

    def test_pbkdf2(self):
        backend = MultiBackend([
            DummyPBKDF2HMACBackend([hashes.MD5])
        ])
        assert backend.pbkdf2_hmac_supported(hashes.MD5())

        backend.derive_pbkdf2_hmac(hashes.MD5(), 10, b"", 10, b"")