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Identity.cpp
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Identity.cpp
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// Copyright 2017 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#include "Core/IOS/ES/ES.h"
#include <vector>
#include <mbedtls/sha1.h>
#include "Common/Crypto/ec.h"
#include "Common/Logging/Log.h"
#include "Common/ScopeGuard.h"
#include "Common/StringUtil.h"
#include "Core/ConfigManager.h"
#include "Core/HW/Memmap.h"
#include "Core/IOS/ES/Formats.h"
#include "Core/IOS/IOSC.h"
#include "Core/IOS/Uids.h"
namespace IOS::HLE::Device
{
ReturnCode ES::GetDeviceId(u32* device_id) const
{
*device_id = m_ios.GetIOSC().GetDeviceId();
INFO_LOG_FMT(IOS_ES, "GetDeviceId: {:08X}", *device_id);
return IPC_SUCCESS;
}
IPCCommandResult ES::GetDeviceId(const IOCtlVRequest& request)
{
if (!request.HasNumberOfValidVectors(0, 1) || request.io_vectors[0].size != sizeof(u32))
return GetDefaultReply(ES_EINVAL);
u32 device_id;
const ReturnCode ret = GetDeviceId(&device_id);
if (ret != IPC_SUCCESS)
return GetDefaultReply(ret);
Memory::Write_U32(device_id, request.io_vectors[0].address);
return GetDefaultReply(IPC_SUCCESS);
}
IPCCommandResult ES::Encrypt(u32 uid, const IOCtlVRequest& request)
{
if (!request.HasNumberOfValidVectors(3, 2))
return GetDefaultReply(ES_EINVAL);
u32 keyIndex = Memory::Read_U32(request.in_vectors[0].address);
u8* source = Memory::GetPointer(request.in_vectors[2].address);
u32 size = request.in_vectors[2].size;
u8* iv = Memory::GetPointer(request.io_vectors[0].address);
u8* destination = Memory::GetPointer(request.io_vectors[1].address);
// TODO: Check whether the active title is allowed to encrypt.
const ReturnCode ret = m_ios.GetIOSC().Encrypt(keyIndex, iv, source, size, destination, PID_ES);
return GetDefaultReply(ret);
}
IPCCommandResult ES::Decrypt(u32 uid, const IOCtlVRequest& request)
{
if (!request.HasNumberOfValidVectors(3, 2))
return GetDefaultReply(ES_EINVAL);
u32 keyIndex = Memory::Read_U32(request.in_vectors[0].address);
u8* source = Memory::GetPointer(request.in_vectors[2].address);
u32 size = request.in_vectors[2].size;
u8* iv = Memory::GetPointer(request.io_vectors[0].address);
u8* destination = Memory::GetPointer(request.io_vectors[1].address);
// TODO: Check whether the active title is allowed to decrypt.
const ReturnCode ret = m_ios.GetIOSC().Decrypt(keyIndex, iv, source, size, destination, PID_ES);
return GetDefaultReply(ret);
}
IPCCommandResult ES::CheckKoreaRegion(const IOCtlVRequest& request)
{
if (!request.HasNumberOfValidVectors(0, 0))
return GetDefaultReply(ES_EINVAL);
// note by DacoTaco : name is unknown, I just tried to name it SOMETHING.
// IOS70 has this to let system menu 4.2 check if the console is region changed. it returns
// -1017
// if the IOS didn't find the Korean keys and 0 if it does. 0 leads to a error 003
INFO_LOG_FMT(IOS_ES, "IOCTL_ES_CHECKKOREAREGION: Title checked for Korean keys.");
return GetDefaultReply(ES_EINVAL);
}
IPCCommandResult ES::GetDeviceCertificate(const IOCtlVRequest& request)
{
if (!request.HasNumberOfValidVectors(0, 1) || request.io_vectors[0].size != 0x180)
return GetDefaultReply(ES_EINVAL);
INFO_LOG_FMT(IOS_ES, "IOCTL_ES_GETDEVICECERT");
const IOS::CertECC cert = m_ios.GetIOSC().GetDeviceCertificate();
Memory::CopyToEmu(request.io_vectors[0].address, &cert, sizeof(cert));
return GetDefaultReply(IPC_SUCCESS);
}
IPCCommandResult ES::Sign(const IOCtlVRequest& request)
{
if (!request.HasNumberOfValidVectors(1, 2))
return GetDefaultReply(ES_EINVAL);
INFO_LOG_FMT(IOS_ES, "IOCTL_ES_SIGN");
u8* ap_cert_out = Memory::GetPointer(request.io_vectors[1].address);
u8* data = Memory::GetPointer(request.in_vectors[0].address);
u32 data_size = request.in_vectors[0].size;
u8* sig_out = Memory::GetPointer(request.io_vectors[0].address);
if (!m_title_context.active)
return GetDefaultReply(ES_EINVAL);
m_ios.GetIOSC().Sign(sig_out, ap_cert_out, m_title_context.tmd.GetTitleId(), data, data_size);
return GetDefaultReply(IPC_SUCCESS);
}
ReturnCode ES::VerifySign(const std::vector<u8>& hash, const std::vector<u8>& ecc_signature,
const std::vector<u8>& certs_bytes)
{
const std::map<std::string, IOS::ES::CertReader> certs = IOS::ES::ParseCertChain(certs_bytes);
if (certs.empty())
return ES_EINVAL;
const auto ap_iterator = std::find_if(certs.begin(), certs.end(), [](const auto& entry) {
return entry.first.length() > 2 && entry.first.compare(0, 2, "AP") == 0;
});
if (ap_iterator == certs.end())
return ES_UNKNOWN_ISSUER;
const IOS::ES::CertReader& ap = ap_iterator->second;
const auto ap_issuers = SplitString(ap.GetIssuer(), '-');
const auto ng_iterator = ap_issuers.size() > 1 ? certs.find(*ap_issuers.rbegin()) : certs.end();
if (ng_iterator == certs.end())
return ES_UNKNOWN_ISSUER;
const IOS::ES::CertReader& ng = ng_iterator->second;
IOSC& iosc = m_ios.GetIOSC();
IOSC::Handle ng_cert;
ReturnCode ret = iosc.CreateObject(&ng_cert, IOSC::TYPE_PUBLIC_KEY, IOSC::SUBTYPE_ECC233, PID_ES);
if (ret != IPC_SUCCESS)
return ret;
Common::ScopeGuard handle_guard{[&] { iosc.DeleteObject(ng_cert, PID_ES); }};
ret = VerifyContainer(VerifyContainerType::Device, VerifyMode::DoNotUpdateCertStore, ng,
certs_bytes, ng_cert);
if (ret != IPC_SUCCESS)
{
ERROR_LOG_FMT(IOS_ES, "VerifySign: VerifyContainer(ng) failed with error {}", ret);
return ret;
}
ret = iosc.VerifyPublicKeySign(ap.GetSha1(), ng_cert, ap.GetSignatureData(), PID_ES);
if (ret != IPC_SUCCESS)
{
ERROR_LOG_FMT(IOS_ES, "VerifySign: IOSC_VerifyPublicKeySign(ap) failed with error {}", ret);
return ret;
}
IOSC::Handle ap_cert;
ret = iosc.CreateObject(&ap_cert, IOSC::TYPE_PUBLIC_KEY, IOSC::SUBTYPE_ECC233, PID_ES);
if (ret != IPC_SUCCESS)
return ret;
Common::ScopeGuard handle2_guard{[&] { iosc.DeleteObject(ap_cert, PID_ES); }};
ret = iosc.ImportPublicKey(ap_cert, ap.GetPublicKey().data(), nullptr, PID_ES);
if (ret != IPC_SUCCESS)
{
ERROR_LOG_FMT(IOS_ES, "VerifySign: IOSC_ImportPublicKey(ap) failed with error {}", ret);
return ret;
}
std::array<u8, 20> sha1;
mbedtls_sha1_ret(hash.data(), hash.size(), sha1.data());
ret = iosc.VerifyPublicKeySign(sha1, ap_cert, ecc_signature, PID_ES);
if (ret != IPC_SUCCESS)
{
ERROR_LOG_FMT(IOS_ES, "VerifySign: IOSC_VerifyPublicKeySign(data) failed with error {}", ret);
return ret;
}
INFO_LOG_FMT(IOS_ES, "VerifySign: all checks passed");
return IPC_SUCCESS;
}
IPCCommandResult ES::VerifySign(const IOCtlVRequest& request)
{
if (!request.HasNumberOfValidVectors(3, 0))
return GetDefaultReply(ES_EINVAL);
if (request.in_vectors[1].size != sizeof(Common::ec::Signature))
return GetDefaultReply(ES_EINVAL);
std::vector<u8> hash(request.in_vectors[0].size);
Memory::CopyFromEmu(hash.data(), request.in_vectors[0].address, hash.size());
std::vector<u8> ecc_signature(request.in_vectors[1].size);
Memory::CopyFromEmu(ecc_signature.data(), request.in_vectors[1].address, ecc_signature.size());
std::vector<u8> certs(request.in_vectors[2].size);
Memory::CopyFromEmu(certs.data(), request.in_vectors[2].address, certs.size());
return GetDefaultReply(VerifySign(hash, ecc_signature, certs));
}
} // namespace IOS::HLE::Device