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-rw-r--r--src/core/hle/service/nwm/nwm_uds.cpp7
-rw-r--r--src/core/hle/service/nwm/uds_data.cpp80
-rw-r--r--src/core/hle/service/nwm/uds_data.h19
3 files changed, 55 insertions, 51 deletions
diff --git a/src/core/hle/service/nwm/nwm_uds.cpp b/src/core/hle/service/nwm/nwm_uds.cpp
index d9bd9c4a4..35fa1cd77 100644
--- a/src/core/hle/service/nwm/nwm_uds.cpp
+++ b/src/core/hle/service/nwm/nwm_uds.cpp
@@ -433,9 +433,8 @@ static void SendTo(Interface* self) {
// TODO(Subv): Increment the sequence number after each sent packet.
u16 sequence_number = 0;
- std::vector<u8> data_payload = GenerateDataPayload(data, data_channel, dest_node_id,
- connection_status.network_node_id,
- sequence_number);
+ std::vector<u8> data_payload = GenerateDataPayload(
+ data, data_channel, dest_node_id, connection_status.network_node_id, sequence_number);
// TODO(Subv): Retrieve the MAC address of the dest_node_id and our own to encrypt
// and encapsulate the payload.
@@ -640,7 +639,7 @@ const Interface::FunctionInfo FunctionTable[] = {
{0x00130040, nullptr, "Unbind"},
{0x001400C0, nullptr, "PullPacket"},
{0x00150080, nullptr, "SetMaxSendDelay"},
- {0x00170182, SendTo, "SendTo"},
+ {0x00170182, SendTo, "SendTo"},
{0x001A0000, GetChannel, "GetChannel"},
{0x001B0302, InitializeWithVersion, "InitializeWithVersion"},
{0x001D0044, BeginHostingNetwork, "BeginHostingNetwork"},
diff --git a/src/core/hle/service/nwm/uds_data.cpp b/src/core/hle/service/nwm/uds_data.cpp
index e05ca8815..fabdf67a8 100644
--- a/src/core/hle/service/nwm/uds_data.cpp
+++ b/src/core/hle/service/nwm/uds_data.cpp
@@ -3,20 +3,20 @@
// Refer to the license.txt file included.
#include <cstring>
-
-#include "core/hle/service/nwm/nwm_uds.h"
-#include "core/hle/service/nwm/uds_beacon.h"
-#include "core/hle/service/nwm/uds_data.h"
-#include "core/hw/aes/key.h"
-
+#include <cryptopp/aes.h>
#include <cryptopp/ccm.h>
#include <cryptopp/filters.h>
#include <cryptopp/md5.h>
#include <cryptopp/modes.h>
+#include "core/hle/service/nwm/nwm_uds.h"
+#include "core/hle/service/nwm/uds_data.h"
+#include "core/hw/aes/key.h"
namespace Service {
namespace NWM {
+using MacAddress = std::array<u8, 6>;
+
// AES Keyslot used to generate the UDS data frame CCMP key.
constexpr size_t UDSDataCryptoAESKeySlot = 0x2D;
@@ -39,14 +39,15 @@ static std::vector<u8> GenerateLLCHeader(EtherType protocol) {
* @returns a buffer with the bytes of the generated header.
*/
static std::vector<u8> GenerateSecureDataHeader(u16 data_size, u8 channel, u16 dest_node_id,
- u16 src_node_id, u16 sequence_number) {
+ u16 src_node_id, u16 sequence_number) {
SecureDataHeader header{};
header.protocol_size = data_size + sizeof(SecureDataHeader);
// Note: This size includes everything except the first 4 bytes of the structure,
// reinforcing the hypotheses that the first 4 bytes are actually the header of
// another container protocol.
header.securedata_size = data_size + sizeof(SecureDataHeader) - 4;
- header.is_management = 0; // Frames sent by the emulated application are never UDS management frames
+ // Frames sent by the emulated application are never UDS management frames
+ header.is_management = 0;
header.data_channel = channel;
header.sequence_number = sequence_number;
header.dest_node_id = dest_node_id;
@@ -60,7 +61,7 @@ static std::vector<u8> GenerateSecureDataHeader(u16 data_size, u8 channel, u16 d
/*
* Calculates the CTR used for the AES-CTR process that calculates
- * the CCMP crypto key for data frames.
+ * the CCMP crypto key for data frames.
* @returns The CTR used for data frames crypto key generation.
*/
static std::array<u8, CryptoPP::MD5::DIGESTSIZE> GetDataCryptoCTR(const NetworkInfo& network_info) {
@@ -81,15 +82,16 @@ static std::array<u8, CryptoPP::MD5::DIGESTSIZE> GetDataCryptoCTR(const NetworkI
* Generates the key used for encrypting the 802.11 data frames generated by UDS.
* @returns The key used for data frames crypto.
*/
-static std::array<u8, CryptoPP::AES::BLOCKSIZE> GenerateDataCCMPKey(const std::vector<u8>& passphrase,
- const NetworkInfo& network_info) {
+static std::array<u8, CryptoPP::AES::BLOCKSIZE> GenerateDataCCMPKey(
+ const std::vector<u8>& passphrase, const NetworkInfo& network_info) {
// Calculate the MD5 hash of the input passphrase.
std::array<u8, CryptoPP::MD5::DIGESTSIZE> passphrase_hash;
CryptoPP::MD5().CalculateDigest(passphrase_hash.data(), passphrase.data(), passphrase.size());
std::array<u8, CryptoPP::AES::BLOCKSIZE> ccmp_key;
- // The CCMP key is the result of encrypting the MD5 hash of the passphrase with AES-CTR using keyslot 0x2D.
+ // The CCMP key is the result of encrypting the MD5 hash of the passphrase with AES-CTR using
+ // keyslot 0x2D.
using CryptoPP::AES;
std::array<u8, CryptoPP::MD5::DIGESTSIZE> counter = GetDataCryptoCTR(network_info);
std::array<u8, AES::BLOCKSIZE> key = HW::AES::GetNormalKey(UDSDataCryptoAESKeySlot);
@@ -139,21 +141,26 @@ static std::vector<u8> GenerateCCMPAAD(const MacAddress& sender, const MacAddres
* Decrypts the payload of an encrypted 802.11 data frame using the specified key.
* @returns The decrypted payload.
*/
-static std::vector<u8> DecryptDataFrame(const std::vector<u8>& encrypted_payload, const std::array<u8, CryptoPP::AES::BLOCKSIZE>& ccmp_key,
- const MacAddress& sender, const MacAddress& receiver, u16 sequence_number) {
+static std::vector<u8> DecryptDataFrame(const std::vector<u8>& encrypted_payload,
+ const std::array<u8, CryptoPP::AES::BLOCKSIZE>& ccmp_key,
+ const MacAddress& sender, const MacAddress& receiver,
+ u16 sequence_number) {
// Reference: IEEE 802.11-2007
std::vector<u8> aad = GenerateCCMPAAD(sender, receiver);
- std::vector<u8> packet_number{0, 0, 0, 0,
+ std::vector<u8> packet_number{0,
+ 0,
+ 0,
+ 0,
static_cast<u8>((sequence_number >> 8) & 0xFF),
static_cast<u8>(sequence_number & 0xFF)};
// 8.3.3.3.3 Construct CCM nonce (13 bytes)
std::vector<u8> nonce;
- nonce.push_back(0); // priority
- nonce.insert(nonce.end(), sender.begin(), sender.end()); // Address 2
+ nonce.push_back(0); // priority
+ nonce.insert(nonce.end(), sender.begin(), sender.end()); // Address 2
nonce.insert(nonce.end(), packet_number.begin(), packet_number.end()); // PN
try {
@@ -161,15 +168,17 @@ static std::vector<u8> DecryptDataFrame(const std::vector<u8>& encrypted_payload
d.SetKeyWithIV(ccmp_key.data(), ccmp_key.size(), nonce.data(), nonce.size());
d.SpecifyDataLengths(aad.size(), encrypted_payload.size() - 8, 0);
- CryptoPP::AuthenticatedDecryptionFilter df(d, nullptr,
- CryptoPP::AuthenticatedDecryptionFilter::MAC_AT_END |
- CryptoPP::AuthenticatedDecryptionFilter::THROW_EXCEPTION);
+ CryptoPP::AuthenticatedDecryptionFilter df(
+ d, nullptr, CryptoPP::AuthenticatedDecryptionFilter::MAC_AT_END |
+ CryptoPP::AuthenticatedDecryptionFilter::THROW_EXCEPTION);
// put aad
df.ChannelPut(CryptoPP::AAD_CHANNEL, aad.data(), aad.size());
// put cipher with mac
- df.ChannelPut(CryptoPP::DEFAULT_CHANNEL, encrypted_payload.data(), encrypted_payload.size() - 8);
- df.ChannelPut(CryptoPP::DEFAULT_CHANNEL, encrypted_payload.data() + encrypted_payload.size() - 8, 8);
+ df.ChannelPut(CryptoPP::DEFAULT_CHANNEL, encrypted_payload.data(),
+ encrypted_payload.size() - 8);
+ df.ChannelPut(CryptoPP::DEFAULT_CHANNEL,
+ encrypted_payload.data() + encrypted_payload.size() - 8, 8);
df.ChannelMessageEnd(CryptoPP::AAD_CHANNEL);
df.ChannelMessageEnd(CryptoPP::DEFAULT_CHANNEL);
@@ -191,20 +200,25 @@ static std::vector<u8> DecryptDataFrame(const std::vector<u8>& encrypted_payload
* Encrypts the payload of an 802.11 data frame using the specified key.
* @returns The encrypted payload.
*/
-static std::vector<u8> EncryptDataFrame(const std::vector<u8>& payload, const std::array<u8, CryptoPP::AES::BLOCKSIZE>& ccmp_key,
- const MacAddress& sender, const MacAddress& receiver, u16 sequence_number) {
+static std::vector<u8> EncryptDataFrame(const std::vector<u8>& payload,
+ const std::array<u8, CryptoPP::AES::BLOCKSIZE>& ccmp_key,
+ const MacAddress& sender, const MacAddress& receiver,
+ u16 sequence_number) {
// Reference: IEEE 802.11-2007
std::vector<u8> aad = GenerateCCMPAAD(sender, receiver);
- std::vector<u8> packet_number{0, 0, 0, 0,
- static_cast<u8>((sequence_number >> 8) & 0xFF),
- static_cast<u8>(sequence_number & 0xFF)};
+ std::vector<u8> packet_number{0,
+ 0,
+ 0,
+ 0,
+ static_cast<u8>((sequence_number >> 8) & 0xFF),
+ static_cast<u8>(sequence_number & 0xFF)};
// 8.3.3.3.3 Construct CCM nonce (13 bytes)
std::vector<u8> nonce;
- nonce.push_back(0); // priority
- nonce.insert(nonce.end(), sender.begin(), sender.end()); // Address 2
+ nonce.push_back(0); // priority
+ nonce.insert(nonce.end(), sender.begin(), sender.end()); // Address 2
nonce.insert(nonce.end(), packet_number.begin(), packet_number.end()); // PN
try {
@@ -235,11 +249,11 @@ static std::vector<u8> EncryptDataFrame(const std::vector<u8>& payload, const st
return {};
}
-std::vector<u8> GenerateDataPayload(const std::vector<u8>& data, u8 channel, u16 dest_node, u16 src_node,
- u16 sequence_number) {
+std::vector<u8> GenerateDataPayload(const std::vector<u8>& data, u8 channel, u16 dest_node,
+ u16 src_node, u16 sequence_number) {
std::vector<u8> buffer = GenerateLLCHeader(EtherType::SecureData);
- std::vector<u8> securedata_header = GenerateSecureDataHeader(data.size(), channel, dest_node, src_node,
- sequence_number);
+ std::vector<u8> securedata_header =
+ GenerateSecureDataHeader(data.size(), channel, dest_node, src_node, sequence_number);
buffer.insert(buffer.end(), securedata_header.begin(), securedata_header.end());
buffer.insert(buffer.end(), data.begin(), data.end());
diff --git a/src/core/hle/service/nwm/uds_data.h b/src/core/hle/service/nwm/uds_data.h
index 960f13cee..a23520a41 100644
--- a/src/core/hle/service/nwm/uds_data.h
+++ b/src/core/hle/service/nwm/uds_data.h
@@ -6,28 +6,18 @@
#include <array>
#include <vector>
-
#include "common/common_types.h"
#include "common/swap.h"
#include "core/hle/service/service.h"
-#include <cryptopp/aes.h>
-
namespace Service {
namespace NWM {
-enum class SAP : u8 {
- SNAPExtensionUsed = 0xAA
-};
+enum class SAP : u8 { SNAPExtensionUsed = 0xAA };
-enum class PDUControl : u8 {
- UnnumberedInformation = 3
-};
+enum class PDUControl : u8 { UnnumberedInformation = 3 };
-enum class EtherType : u16 {
- SecureData = 0x876D,
- EAPoL = 0x888E
-};
+enum class EtherType : u16 { SecureData = 0x876D, EAPoL = 0x888E };
/*
* 802.2 header, UDS packets always use SNAP for these headers,
@@ -81,7 +71,8 @@ static_assert(sizeof(DataFrameCryptoCTR) == 16, "DataFrameCryptoCTR has the wron
* Generates an unencrypted 802.11 data payload.
* @returns The generated frame payload.
*/
-std::vector<u8> GenerateDataPayload(const std::vector<u8>& data, u8 channel, u16 dest_node, u16 src_node, u16 sequence_number);
+std::vector<u8> GenerateDataPayload(const std::vector<u8>& data, u8 channel, u16 dest_node,
+ u16 src_node, u16 sequence_number);
} // namespace NWM
} // namespace Service
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-31 20:02:15 +0000