ID 3. C style pointer casting from security audit fixed

2016-10-03 11:40:30 +02:00
parent 28408fcea7
commit 559ffc5ead
20 changed files with 178 additions and 178 deletions
--- a/lib/TLS/src/Credentials.cpp
+++ b/lib/TLS/src/Credentials.cpp
@@ -173,8 +173,8 @@ void eap::credentials_tls::store(_In_z_ LPCTSTR pszTargetName, _In_ unsigned int
    data_blob cred_enc;
    if (m_cert) {
        // Encrypt the certificate using user's key.
-        DATA_BLOB cred_blob    = { m_cert->cbCertEncoded,         m_cert->pbCertEncoded };
-        DATA_BLOB entropy_blob = { sizeof(s_entropy)    , (LPBYTE)s_entropy             };
+        DATA_BLOB cred_blob    = { m_cert->cbCertEncoded, m_cert->pbCertEncoded         };
+        DATA_BLOB entropy_blob = { sizeof(s_entropy)    , const_cast<LPBYTE>(s_entropy) };
        if (!CryptProtectData(&cred_blob, NULL, &entropy_blob, NULL, NULL, CRYPTPROTECT_UI_FORBIDDEN, &cred_enc))
            throw win_runtime_error(__FUNCTION__ " CryptProtectData failed.");
    }
@@ -185,18 +185,18 @@ void eap::credentials_tls::store(_In_z_ LPCTSTR pszTargetName, _In_ unsigned int
    assert(cred_enc.cbData     < CRED_MAX_CREDENTIAL_BLOB_SIZE);
    assert(m_identity.length() < CRED_MAX_USERNAME_LENGTH     );
    CREDENTIAL cred = {
-        0,                          // Flags
-        CRED_TYPE_GENERIC,          // Type
-        (LPTSTR)target.c_str(),     // TargetName
-        _T(""),                     // Comment
-        { 0, 0 },                   // LastWritten
-        cred_enc.cbData,            // CredentialBlobSize
-        cred_enc.pbData,            // CredentialBlob
-        CRED_PERSIST_ENTERPRISE,    // Persist
-        0,                          // AttributeCount
-        NULL,                       // Attributes
-        NULL,                       // TargetAlias
-        (LPTSTR)m_identity.c_str()  // UserName
+        0,                                     // Flags
+        CRED_TYPE_GENERIC,                     // Type
+        const_cast<LPTSTR>(target.c_str()),    // TargetName
+        _T(""),                                // Comment
+        { 0, 0 },                              // LastWritten
+        cred_enc.cbData,                       // CredentialBlobSize
+        cred_enc.pbData,                       // CredentialBlob
+        CRED_PERSIST_ENTERPRISE,               // Persist
+        0,                                     // AttributeCount
+        NULL,                                  // Attributes
+        NULL,                                  // TargetAlias
+        const_cast<LPTSTR>(m_identity.c_str()) // UserName
    };
    if (!CredWrite(&cred, 0))
        throw win_runtime_error(__FUNCTION__ " CredWrite failed.");
@@ -214,8 +214,8 @@ void eap::credentials_tls::retrieve(_In_z_ LPCTSTR pszTargetName, _In_ unsigned

    if (cred->CredentialBlobSize) {
        // Decrypt the certificate using user's key.
-        DATA_BLOB cred_enc     = { cred->CredentialBlobSize, cred->CredentialBlob };
-        DATA_BLOB entropy_blob = { sizeof(s_entropy)       , (LPBYTE)s_entropy    };
+        DATA_BLOB cred_enc     = { cred->CredentialBlobSize, cred->CredentialBlob          };
+        DATA_BLOB entropy_blob = { sizeof(s_entropy)       , const_cast<LPBYTE>(s_entropy) };
        data_blob cred_int;
        if (!CryptUnprotectData(&cred_enc, NULL, &entropy_blob, NULL, NULL, CRYPTPROTECT_UI_FORBIDDEN | CRYPTPROTECT_VERIFY_PROTECTION, &cred_int))
            throw win_runtime_error(__FUNCTION__ " CryptUnprotectData failed.");
@@ -298,14 +298,14 @@ eap::credentials::source_t eap::credentials_tls::combine(
 {
    if (cred_cached) {
        // Using EAP service cached credentials.
-        *this = *(credentials_tls*)cred_cached;
+        *this = *dynamic_cast<const credentials_tls*>(cred_cached);
        m_module.log_event(&EAPMETHOD_TRACE_EVT_CRED_CACHED2, event_data((unsigned int)eap_type_tls), event_data(credentials_tls::get_name()), event_data(pszTargetName), event_data::blank);
        return source_cache;
    }

    if (cfg.m_use_cred) {
        // Using configured credentials.
-        *this = *(credentials_tls*)cfg.m_cred.get();
+        *this = *dynamic_cast<const credentials_tls*>(cfg.m_cred.get());
        m_module.log_event(&EAPMETHOD_TRACE_EVT_CRED_CONFIG2, event_data((unsigned int)eap_type_tls), event_data(credentials_tls::get_name()), event_data(pszTargetName), event_data::blank);
        return source_config;
    }
--- a/lib/TLS/src/Method.cpp
+++ b/lib/TLS/src/Method.cpp
@@ -376,8 +376,8 @@ void eap::method_tls::process_request_packet(
            // Derive master secret.
            static const unsigned char s_label[] = "master secret";
            sanitizing_blob seed(s_label, s_label + _countof(s_label) - 1);
-            seed.insert(seed.end(), (const unsigned char*)&m_random_client, (const unsigned char*)(&m_random_client + 1));
-            seed.insert(seed.end(), (const unsigned char*)&m_random_server, (const unsigned char*)(&m_random_server + 1));
+            seed.insert(seed.end(), reinterpret_cast<const unsigned char*>(&m_random_client), reinterpret_cast<const unsigned char*>(&m_random_client + 1));
+            seed.insert(seed.end(), reinterpret_cast<const unsigned char*>(&m_random_server), reinterpret_cast<const unsigned char*>(&m_random_server + 1));
            memcpy(&m_master_secret, prf(m_cp, m_alg_prf, pms, seed, sizeof(tls_master_secret)).data(), sizeof(tls_master_secret));

            // Create client key exchange message, and append to packet.
@@ -396,8 +396,8 @@ void eap::method_tls::process_request_packet(
        // Derive client side keys.
        static const unsigned char s_label[] = "key expansion";
        sanitizing_blob seed(s_label, s_label + _countof(s_label) - 1);
-        seed.insert(seed.end(), (const unsigned char*)&m_random_server, (const unsigned char*)(&m_random_server + 1));
-        seed.insert(seed.end(), (const unsigned char*)&m_random_client, (const unsigned char*)(&m_random_client + 1));
+        seed.insert(seed.end(), reinterpret_cast<const unsigned char*>(&m_random_server), reinterpret_cast<const unsigned char*>(&m_random_server + 1));
+        seed.insert(seed.end(), reinterpret_cast<const unsigned char*>(&m_random_client), reinterpret_cast<const unsigned char*>(&m_random_client + 1));
        sanitizing_blob key_block(prf(m_cp, m_alg_prf, m_master_secret, seed,
            2*m_state_client_pending.m_size_mac_key +  // client_write_MAC_secret & server_write_MAC_secret (SHA1)
            2*m_state_client_pending.m_size_enc_key +  // client_write_key        & server_write_key
@@ -518,9 +518,9 @@ void eap::method_tls::get_result(
        // Fill array with RADIUS attributes.
        eap_attr a;
        m_eap_attr.reserve(m_eap_attr.size() + 3);
-        a.create_ms_mppe_key(16, (LPCBYTE)&m_key_mppe_client, sizeof(tls_random));
+        a.create_ms_mppe_key(16, reinterpret_cast<LPCBYTE>(&m_key_mppe_client), sizeof(tls_random));
        m_eap_attr.push_back(std::move(a));
-        a.create_ms_mppe_key(17, (LPCBYTE)&m_key_mppe_server, sizeof(tls_random));
+        a.create_ms_mppe_key(17, reinterpret_cast<LPCBYTE>(&m_key_mppe_server), sizeof(tls_random));
        m_eap_attr.push_back(std::move(a));
        m_eap_attr.push_back(eap_attr::blank);

@@ -552,7 +552,7 @@ void eap::method_tls::get_result(
                NULL,
                &buf_out_desc);
            if (SUCCEEDED(status))
-                m_packet_res.m_data.insert(m_packet_res.m_data.end(), (const unsigned char*)buf_out[0].pvBuffer, (const unsigned char*)buf_out[0].pvBuffer + buf_out[0].cbBuffer);
+                m_packet_res.m_data.insert(m_packet_res.m_data.end(), reinterpret_cast<const unsigned char*>(buf_out[0].pvBuffer), reinterpret_cast<const unsigned char*>(buf_out[0].pvBuffer) + buf_out[0].cbBuffer);
        }
 #endif

@@ -594,14 +594,14 @@ eap::sanitizing_blob eap::method_tls::make_client_hello()
    // SSL header
    assert(size_data <= 0xffffff);
    unsigned int ssl_header = htonl((tls_handshake_type_client_hello << 24) | (unsigned int)size_data);
-    msg.insert(msg.end(), (unsigned char*)&ssl_header, (unsigned char*)(&ssl_header + 1));
+    msg.insert(msg.end(), reinterpret_cast<const unsigned char*>(&ssl_header), reinterpret_cast<const unsigned char*>(&ssl_header + 1));

    // SSL version
-    msg.insert(msg.end(), (unsigned char*)&m_tls_version, (unsigned char*)(&m_tls_version + 1));
+    msg.insert(msg.end(), reinterpret_cast<const unsigned char*>(&m_tls_version), reinterpret_cast<const unsigned char*>(&m_tls_version + 1));

    // Generate client random and add it to the message
    m_random_client.randomize(m_cp);
-    msg.insert(msg.end(), (unsigned char*)&m_random_client, (unsigned char*)(&m_random_client + 1));
+    msg.insert(msg.end(), reinterpret_cast<const unsigned char*>(&m_random_client), reinterpret_cast<const unsigned char*>(&m_random_client + 1));

    // Session ID
    assert(m_session_id.size() <= 32);
@@ -610,7 +610,7 @@ eap::sanitizing_blob eap::method_tls::make_client_hello()

    // Cypher suite list
    unsigned short size_cipher_suite2 = htons((unsigned short)sizeof(s_cipher_suite));
-    msg.insert(msg.end(), (unsigned char*)&size_cipher_suite2, (unsigned char*)(&size_cipher_suite2 + 1));
+    msg.insert(msg.end(), reinterpret_cast<const unsigned char*>(&size_cipher_suite2), reinterpret_cast<const unsigned char*>(&size_cipher_suite2 + 1));
    msg.insert(msg.end(), s_cipher_suite, s_cipher_suite + _countof(s_cipher_suite));

    // Compression
@@ -638,7 +638,7 @@ eap::sanitizing_blob eap::method_tls::make_client_cert() const
    // SSL header
    assert(size_data <= 0xffffff);
    unsigned int ssl_header = htonl((tls_handshake_type_certificate << 24) | (unsigned int)size_data);
-    msg.insert(msg.end(), (unsigned char*)&ssl_header, (unsigned char*)(&ssl_header + 1));
+    msg.insert(msg.end(), reinterpret_cast<const unsigned char*>(&ssl_header), reinterpret_cast<const unsigned char*>(&ssl_header + 1));

    // List size
    assert(size_list <= 0xffffff);
@@ -663,7 +663,7 @@ eap::sanitizing_blob eap::method_tls::make_client_cert() const
 eap::sanitizing_blob eap::method_tls::make_client_key_exchange(_In_ const tls_master_secret &pms) const
 {
    // Encrypt pre-master key with server public key first.
-    sanitizing_blob pms_enc((const unsigned char*)&pms, (const unsigned char*)(&pms + 1));
+    sanitizing_blob pms_enc(reinterpret_cast<const unsigned char*>(&pms), reinterpret_cast<const unsigned char*>(&pms + 1));
    crypt_key key;
    if (!key.import_public(m_cp_enc_client, X509_ASN_ENCODING | PKCS_7_ASN_ENCODING, &(m_server_cert_chain.front()->pCertInfo->SubjectPublicKeyInfo)))
        throw win_runtime_error(__FUNCTION__ " Error importing server's public key.");
@@ -681,7 +681,7 @@ eap::sanitizing_blob eap::method_tls::make_client_key_exchange(_In_ const tls_ma
    // SSL header
    assert(size_data <= 0xffffff);
    unsigned int ssl_header = htonl((tls_handshake_type_client_key_exchange << 24) | (unsigned int)size_data);
-    msg.insert(msg.end(), (unsigned char*)&ssl_header, (unsigned char*)(&ssl_header + 1));
+    msg.insert(msg.end(), reinterpret_cast<const unsigned char*>(&ssl_header), reinterpret_cast<const unsigned char*>(&ssl_header + 1));

    // Encrypted pre master secret size
    assert(size_pms_enc <= 0xffff);
@@ -707,7 +707,7 @@ eap::sanitizing_blob eap::method_tls::make_finished() const

    // SSL header
    unsigned int ssl_header = htonl((unsigned int)(tls_handshake_type_finished << 24) | 12);
-    msg.insert(msg.end(), (unsigned char*)&ssl_header, (unsigned char*)(&ssl_header + 1));
+    msg.insert(msg.end(), reinterpret_cast<const unsigned char*>(&ssl_header), reinterpret_cast<const unsigned char*>(&ssl_header + 1));

    // Create label + hash MD5 + hash SHA-1 seed.
    crypt_hash hash;
@@ -760,7 +760,7 @@ eap::sanitizing_blob eap::method_tls::make_message(_In_ tls_message_type_t type,

    sanitizing_blob msg;
    msg.reserve(sizeof(message_header) + size_data);
-    msg.assign((const unsigned char*)&hdr, (const unsigned char*)(&hdr + 1));
+    msg.assign(reinterpret_cast<const unsigned char*>(&hdr), reinterpret_cast<const unsigned char*>(&hdr + 1));
    msg.insert(msg.end(), data.begin(), data.end());
    return msg;
 }
@@ -774,8 +774,8 @@ void eap::method_tls::derive_msk()
 #if EAP_TLS < EAP_TLS_SCHANNEL
    static const unsigned char s_label[] = "client EAP encryption";
    sanitizing_blob seed(s_label, s_label + _countof(s_label) - 1);
-    seed.insert(seed.end(), (const unsigned char*)&m_random_client, (const unsigned char*)(&m_random_client + 1));
-    seed.insert(seed.end(), (const unsigned char*)&m_random_server, (const unsigned char*)(&m_random_server + 1));
+    seed.insert(seed.end(), reinterpret_cast<const unsigned char*>(&m_random_client), reinterpret_cast<const unsigned char*>(&m_random_client + 1));
+    seed.insert(seed.end(), reinterpret_cast<const unsigned char*>(&m_random_server), reinterpret_cast<const unsigned char*>(&m_random_server + 1));
    sanitizing_blob key_block(prf(m_cp, m_alg_prf, m_master_secret, seed, 2*sizeof(tls_random)));
    _key_block = key_block.data();
 #else
@@ -808,13 +808,13 @@ void eap::method_tls::process_packet(_In_bytecount_(size_pck) const void *_pck,
 {
    sanitizing_blob data;

-    for (const unsigned char *pck = (const unsigned char*)_pck, *pck_end = pck + size_pck; pck < pck_end; ) {
+    for (const unsigned char *pck = reinterpret_cast<const unsigned char*>(_pck), *pck_end = pck + size_pck; pck < pck_end; ) {
        if (pck + 5 > pck_end)
            throw win_runtime_error(EAP_E_EAPHOST_METHOD_INVALID_PACKET, __FUNCTION__ " Incomplete message header.");
        const message_header *hdr = (const message_header*)pck;
        const unsigned char
-            *msg     = (const unsigned char*)(hdr + 1),
-            *msg_end = msg + ntohs(*(unsigned short*)hdr->length);
+            *msg     = reinterpret_cast<const unsigned char*>(hdr + 1),
+            *msg_end = msg + ntohs(*reinterpret_cast<const unsigned short*>(hdr->length));
        if (msg_end > pck_end)
            throw win_runtime_error(EAP_E_EAPHOST_METHOD_INVALID_PACKET, __FUNCTION__ " Incomplete message data.");

@@ -870,7 +870,7 @@ void eap::method_tls::process_change_cipher_spec(_In_bytecount_(size_msg) const
    if (size_msg < 1)
        throw win_runtime_error(EAP_E_EAPHOST_METHOD_INVALID_PACKET, __FUNCTION__ " Incomplete change cipher spec.");

-    const unsigned char *msg = (const unsigned char*)_msg;
+    const unsigned char *msg = reinterpret_cast<const unsigned char*>(_msg);
    if (msg[0] != 1)
        throw win_runtime_error(EAP_E_EAPHOST_METHOD_INVALID_PACKET, string_printf(__FUNCTION__ " Invalid change cipher spec message (expected 1, received %u).", msg[0]));

@@ -885,8 +885,8 @@ void eap::method_tls::process_change_cipher_spec(_In_bytecount_(size_msg) const

    static const unsigned char s_label[] = "key expansion";
    sanitizing_blob seed(s_label, s_label + _countof(s_label) - 1);
-    seed.insert(seed.end(), (const unsigned char*)&m_random_server, (const unsigned char*)(&m_random_server + 1));
-    seed.insert(seed.end(), (const unsigned char*)&m_random_client, (const unsigned char*)(&m_random_client + 1));
+    seed.insert(seed.end(), reinterpret_cast<const unsigned char*>(&m_random_server), reinterpret_cast<const unsigned char*>(&m_random_server + 1));
+    seed.insert(seed.end(), reinterpret_cast<const unsigned char*>(&m_random_client), reinterpret_cast<const unsigned char*>(&m_random_client + 1));
    sanitizing_blob key_block(prf(m_cp, m_alg_prf, m_master_secret, seed,
        2*m_state_server_pending.m_size_mac_key +  // client_write_MAC_secret & server_write_MAC_secret (SHA1)
        2*m_state_server_pending.m_size_enc_key +  // client_write_key        & server_write_key
@@ -928,7 +928,7 @@ void eap::method_tls::process_alert(_In_bytecount_(size_msg) const void *_msg, _
    if (size_msg < 2)
        throw win_runtime_error(EAP_E_EAPHOST_METHOD_INVALID_PACKET, __FUNCTION__ " Incomplete alert.");

-    const unsigned char *msg = (const unsigned char*)_msg;
+    const unsigned char *msg = reinterpret_cast<const unsigned char*>(_msg);

    m_module.log_event(&EAPMETHOD_TLS_ALERT, event_data((unsigned int)eap_type_tls), event_data((unsigned char)msg[0]), event_data((unsigned char)msg[1]), event_data::blank);

@@ -941,11 +941,11 @@ void eap::method_tls::process_alert(_In_bytecount_(size_msg) const void *_msg, _

 void eap::method_tls::process_handshake(_In_bytecount_(size_msg) const void *_msg, _In_ size_t size_msg)
 {
-    for (const unsigned char *msg = (const unsigned char*)_msg, *msg_end = msg + size_msg; msg < msg_end; ) {
+    for (const unsigned char *msg = reinterpret_cast<const unsigned char*>(_msg), *msg_end = msg + size_msg; msg < msg_end; ) {
        // Parse record header.
        if (msg + sizeof(unsigned int) > msg_end)
            throw win_runtime_error(EAP_E_EAPHOST_METHOD_INVALID_PACKET, __FUNCTION__ " Incomplete record header.");
-        unsigned int hdr = ntohl(*(unsigned int*)msg);
+        unsigned int hdr = ntohl(*reinterpret_cast<const unsigned int*>(msg));
        const unsigned char
            *rec     = msg + sizeof(unsigned int),
            *rec_end = rec + (hdr & 0xffffff);
@@ -959,9 +959,9 @@ void eap::method_tls::process_handshake(_In_bytecount_(size_msg) const void *_ms
                // TLS version
                if (rec + 2 > rec_end)
                    throw win_runtime_error(EAP_E_EAPHOST_METHOD_INVALID_PACKET, __FUNCTION__ " Server SSL/TLS version missing or incomplete.");
-                else if (*(tls_version*)rec < tls_version_1_0 || m_tls_version < *(tls_version*)rec)
+                else if (*reinterpret_cast<const tls_version*>(rec) < tls_version_1_0 || m_tls_version < *reinterpret_cast<const tls_version*>(rec))
                    throw win_runtime_error(ERROR_NOT_SUPPORTED, __FUNCTION__ " Unsupported SSL/TLS version.");
-                m_tls_version = *(tls_version*)rec;
+                m_tls_version = *reinterpret_cast<const tls_version*>(rec);
                m_alg_prf = m_tls_version < tls_version_1_2 ? CALG_TLS1PRF : CALG_SHA_256;
                rec += 2;

@@ -1171,7 +1171,7 @@ void eap::method_tls::process_handshake()
        // Send Schannel's token via EAP.
        assert(buf_out[0].BufferType == SECBUFFER_TOKEN);
        assert(m_sc_ctx.m_attrib & ISC_RET_ALLOCATED_MEMORY);
-        m_packet_res.m_data.assign((const unsigned char*)buf_out[0].pvBuffer, (const unsigned char*)buf_out[0].pvBuffer + buf_out[0].cbBuffer);
+        m_packet_res.m_data.assign(reinterpret_cast<const unsigned char*>(buf_out[0].pvBuffer), reinterpret_cast<const unsigned char*>(buf_out[0].pvBuffer) + buf_out[0].cbBuffer);
        if (buf_in[1].BufferType == SECBUFFER_EXTRA) {
            // Server appended extra data.
            m_sc_queue.erase(m_sc_queue.begin(), m_sc_queue.end() - buf_in[1].cbBuffer);
@@ -1217,7 +1217,7 @@ void eap::method_tls::process_handshake()
            // Send alert via EAP. Not that EAP will transmit it once we throw this is an error...
            assert(buf_out[1].BufferType == SECBUFFER_ALERT);
            assert(m_sc_ctx.m_attrib & ISC_RET_ALLOCATED_MEMORY);
-            m_packet_res.m_data.assign((const unsigned char*)buf_out[1].pvBuffer, (const unsigned char*)buf_out[1].pvBuffer + buf_out[1].cbBuffer);
+            m_packet_res.m_data.assign(reinterpret_cast<const unsigned char*>(buf_out[1].pvBuffer), reinterpret_cast<const unsigned char*>(buf_out[1].pvBuffer) + buf_out[1].cbBuffer);
        }

        throw sec_runtime_error(status, __FUNCTION__ " Schannel error.");
@@ -1265,7 +1265,7 @@ void eap::method_tls::process_application_data()
        std::vector<unsigned char> extra;
        for (size_t i = 0; i < _countof(buf); i++)
            if (buf[i].BufferType == SECBUFFER_EXTRA)
-                extra.insert(extra.end(), (unsigned char*)buf[i].pvBuffer, (unsigned char*)buf[i].pvBuffer + buf[i].cbBuffer);
+                extra.insert(extra.end(), reinterpret_cast<const unsigned char*>(buf[i].pvBuffer), reinterpret_cast<const unsigned char*>(buf[i].pvBuffer) + buf[i].cbBuffer);
        m_sc_queue = std::move(extra);
    } else if (status == SEC_E_INCOMPLETE_MESSAGE) {
        // Schannel neeeds more data. Send ACK packet to server to send more.
@@ -1647,7 +1647,7 @@ eap::sanitizing_blob eap::method_tls::prf(
            size_S2 = size_S1;
        const void
            *S1 = &secret,
-            *S2 = (const unsigned char*)&secret + (sizeof(tls_master_secret) - size_S2);
+            *S2 = reinterpret_cast<const unsigned char*>(&secret) + (sizeof(tls_master_secret) - size_S2);

        // Precalculate HMAC padding for speed.
        hmac_padding
@@ -1656,8 +1656,8 @@ eap::sanitizing_blob eap::method_tls::prf(

        // Prepare A for p_hash.
        sanitizing_blob
-            A1((unsigned char*)seed, (unsigned char*)seed + size_seed),
-            A2((unsigned char*)seed, (unsigned char*)seed + size_seed);
+            A1(reinterpret_cast<const unsigned char*>(seed), reinterpret_cast<const unsigned char*>(seed) + size_seed),
+            A2(reinterpret_cast<const unsigned char*>(seed), reinterpret_cast<const unsigned char*>(seed) + size_seed);

        sanitizing_blob
            hmac1,
@@ -1706,7 +1706,7 @@ eap::sanitizing_blob eap::method_tls::prf(
        hmac_padding padding(cp, alg, &secret, sizeof(tls_master_secret));

        // Prepare A for p_hash.
-        sanitizing_blob A((unsigned char*)seed, (unsigned char*)seed + size_seed);
+        sanitizing_blob A(reinterpret_cast<const unsigned char*>(seed), reinterpret_cast<const unsigned char*>(seed) + size_seed);

        sanitizing_blob hmac;
        for (size_t i = 0; i < size; ) {
@@ -1759,8 +1759,8 @@ HCRYPTKEY eap::method_tls::create_key(
    };
    sanitizing_blob key_blob;
    key_blob.reserve(sizeof(key_blob_prefix) + size_secret);
-    key_blob.assign((const unsigned char*)&prefix, (const unsigned char*)(&prefix + 1));
-    key_blob.insert(key_blob.end(), (const unsigned char*)secret, (const unsigned char*)secret + size_secret);
+    key_blob.assign(                reinterpret_cast<const unsigned char*>(&prefix), reinterpret_cast<const unsigned char*>(&prefix + 1));
+    key_blob.insert(key_blob.end(), reinterpret_cast<const unsigned char*>( secret), reinterpret_cast<const unsigned char*>(secret) + size_secret);

    // Import the key.
    winstd::crypt_key key_out;
@@ -1795,7 +1795,7 @@ HCRYPTKEY eap::method_tls::create_key(
 #pragma pack(pop)
    sanitizing_blob key_blob;
    key_blob.reserve(sizeof(key_blob_prefix) + size_key);
-    key_blob.assign((const unsigned char*)&prefix, (const unsigned char*)(&prefix + 1));
+    key_blob.assign(reinterpret_cast<const unsigned char*>(&prefix), reinterpret_cast<const unsigned char*>(&prefix + 1));

    // Key in EME-PKCS1-v1_5 (RFC 3447).
    key_blob.push_back(0); // Initial zero
@@ -1818,7 +1818,7 @@ HCRYPTKEY eap::method_tls::create_key(
    key_blob.push_back(0); // PS and M zero delimiter

    // M
-    key_blob.insert(key_blob.end(), (const unsigned char*)secret, (const unsigned char*)secret + size_secret);
+    key_blob.insert(key_blob.end(), reinterpret_cast<const unsigned char*>(secret), reinterpret_cast<const unsigned char*>(secret) + size_secret);

 #ifdef _HOST_LOW_ENDIAN
    std::reverse(key_blob.end() - size_key, key_blob.end());
--- a/lib/TLS/src/TLS.cpp
+++ b/lib/TLS/src/TLS.cpp
@@ -496,11 +496,11 @@ bool eap::packet_tls::append_frag(_In_ const EapPacket *pck)
    if (pck->Data[1] & flags_req_length_incl) {
        // Length field is included.
        packet_data_ptr  = pck->Data + 6;
-        size_packet_data = ntohs(*(unsigned short*)pck->Length) - 10;
+        size_packet_data = ntohs(*reinterpret_cast<const unsigned short*>(pck->Length)) - 10;
    } else {
        // Length field not included.
        packet_data_ptr  = pck->Data + 2;
-        size_packet_data = ntohs(*(unsigned short*)pck->Length) - 6;
+        size_packet_data = ntohs(*reinterpret_cast<const unsigned short*>(pck->Length)) - 6;
    }

    // Do the EAP-TLS defragmentation.
@@ -509,7 +509,7 @@ bool eap::packet_tls::append_frag(_In_ const EapPacket *pck)
            // Start a new packet.
            if (pck->Data[1] & flags_req_length_incl) {
                // Preallocate data according to the Length field.
-                size_t size_tot  = ntohl(*(unsigned int*)(pck->Data + 2));
+                size_t size_tot  = ntohl(*reinterpret_cast<const unsigned int*>(pck->Data + 2));
                m_data.reserve(size_tot);
                //m_module.log_event(&EAPMETHOD_PACKET_RECV_FRAG_FIRST, event_data((unsigned int)eap_type_tls), event_data((unsigned int)size_packet_data), event_data((unsigned int)size_tot), event_data::blank);
            } else {
@@ -561,7 +561,7 @@ unsigned short eap::packet_tls::get_frag(_Out_bytecap_(size_pck) EapPacket *pck,
        } else {
            // But it should be fragmented.
            m_flags |= flags_res_length_incl | flags_res_more_frag;
-            *(unsigned int*)(pck->Data + 2) = htonl(size_packet);
+            *reinterpret_cast<unsigned int*>(pck->Data + 2) = htonl(size_packet);
            data_dst    = pck->Data + 6;
            size_data   = size_packet_limit - 10;
            size_packet = size_packet_limit;
@@ -585,7 +585,7 @@ unsigned short eap::packet_tls::get_frag(_Out_bytecap_(size_pck) EapPacket *pck,

    pck->Code = (BYTE)m_code;
    pck->Id   = m_id;
-    *(unsigned short*)pck->Length = htons((unsigned short)size_packet);
+    *reinterpret_cast<unsigned short*>(pck->Length) = htons((unsigned short)size_packet);
    pck->Data[0] = (BYTE)eap_type_tls;
    pck->Data[1] = m_flags;
    memcpy(data_dst, m_data.data(), size_data);