}

    @Test
    @DisplayName("isSignatureSetupRequired depends on digest and negotiate flags")
    void testIsSignatureSetupRequired() throws Exception {
        SmbSessionImpl session = newSession();

        // Case 1: digest already set -> false
        SMBSigningDigest dg = mock(SMBSigningDigest.class);
        setField(session, "digest", dg);
        assertFalse(session.isSignatureSetupRequired());

            return 0;
        }

        @Override
        public void setDigest(SMBSigningDigest digest) {
            this.digest = digest;
        }

        @Override
        public SMBSigningDigest getDigest() {
            return digest;
        }

        @Override
        public void setResponse(CommonServerMessageBlockResponse msg) {

client = TestClient(app)


def test_security_http_digest():
    response = client.get("/users/me", headers={"Authorization": "Digest foobar"})
    assert response.status_code == 200, response.text
    assert response.json() == {"scheme": "Digest", "credentials": "foobar"}


def test_security_http_digest_no_credentials():
    response = client.get("/users/me")

 * [OkHttp AWS Signer](https://github.com/babbel/okhttp-aws-signer): AWS V4 signing algorithm for OkHttp requests
 * [okhttp-digest](https://github.com/rburgst/okhttp-digest): A digest authenticator for OkHttp.
 * [OkHttp Idling Resource](https://github.com/JakeWharton/okhttp-idling-resource): An Espresso IdlingResource for OkHttp.

        return HTTPAuthorizationCredentials(scheme=scheme, credentials=credentials)


class HTTPDigest(HTTPBase):
    """
    HTTP Digest authentication.

    **Warning**: this is only a stub to connect the components with OpenAPI in FastAPI,
    but it doesn't implement the full Digest scheme, you would need to subclass it
    and implement it in your code.

    Ref: https://datatracker.ietf.org/doc/html/rfc7616

                final HMACT64 userKey = new HMACT64(ntlmv2Hash);
                userKey.update(hmac.digest());
                userKey.digest(dest, offset, 16);
                break;
            default:
                md4.update(md4.digest());
                md4.digest(dest, offset, 16);
                break;
            }
        } catch (final Exception e) {
            throw new SmbException("", e);

    private static final int SIGNATURE_LENGTH = 16;
    private final Mac digest;
    private final ReentrantLock signingLock = new ReentrantLock();
    private byte[] signingKey;
    private final String algorithmName;
    private final java.security.Provider provider;
    private volatile boolean closed = false;

    /**
     * Constructs a SMB2 signing digest with the specified session key and dialect
     *
     * @param sessionKey

        assertEquals(fid, SMBUtil.readInt2(dst, 0));
        // lastWriteTime is not written if digest is null, so the remaining bytes should be zero
        assertEquals(0, SMBUtil.readInt4(dst, 2));
    }

    /**
     * Test method for {@link jcifs.internal.smb1.com.SmbComClose#writeParameterWordsWireFormat(byte[], int)} with a signing digest.
     */
    @Test
    public void testWriteParameterWordsWireFormatWithDigest() {

        mac.update(seqBytes); // sequence
        mac.update(data); // data
        final byte[] dgst = mac.digest();
        byte[] trunc = new byte[8];
        System.arraycopy(dgst, 0, trunc, 0, 8);

        if (log.isDebugEnabled()) {
            log.debug("Digest " + Hexdump.toHexString(dgst));
            log.debug("Truncated " + Hexdump.toHexString(trunc));
        }

    }

    /**
     * @param digest
     *            the digest to set
     * @throws SmbException
     */
    private void setDigest(SMBSigningDigest digest) throws SmbException {
        if (this.transport.isSMB2()) {
            this.digest = digest;
        } else {
            this.transport.setDigest(digest);
        }
    }

    /**
     * @return the digest