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d94579f71f
IVS取得モードのシーケンス実装 git-svn-id: file:///Volumes/Transfer/gigaleak_20231201/2020-05-23%20-%20ctr.7z%20+%20svn_v1.068.zip/ctr/svn/ctr_Repair@218 385bec56-5757-e545-9c3a-d8741f4650f1
112 lines
2.9 KiB
C++
112 lines
2.9 KiB
C++
/*---------------------------------------------------------------------------*
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Project: Horizon
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File: Util.cpp
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Copyright 2009 Nintendo. All rights reserved.
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These coded instructions, statements, and computer programs contain
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proprietary information of Nintendo of America Inc. and/or Nintendo
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Company Ltd., and are protected by Federal copyright law. They may
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not be disclosed to third parties or copied or duplicated in any form,
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in whole or in part, without the prior written consent of Nintendo.
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$Rev$
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*---------------------------------------------------------------------------*/
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#include <nn.h>
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#include "Util.h"
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#include <cctype>
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namespace common
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{
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Util::Util()
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{
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// TODO 自動生成されたコンストラクター・スタブ
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}
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Util::~Util()
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{
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// TODO Auto-generated destructor stub
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}
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// NULL終端されたシリアルナンバーを受け取る
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// NULL終端された場所にチェックデジットを付加して新たにNULL終端する
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void Util::AddCheckDigit(char* serial)
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{
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size_t len = std::strlen(serial);
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u8 digit = 0;
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bool odd = true;
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for(u8 i = len - 1; i > 0 && std::isdigit(serial[i]); i--)
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{
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if(odd)
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{
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digit += (serial[i] - '0') * 3;
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}
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else
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{
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digit += (serial[i] - '0');
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}
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odd = !odd;
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}
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if(digit % 10 != 0)
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{
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serial[len] = 10 - (digit % 10) + '0';
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}
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else
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{
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serial[len] = '0';
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}
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serial[len + 1] = '\0';
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}
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// IVSからセーブデータディレクトリ名を生成する
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void Util::GetSaveDataDirectoryRoot(::std::string& sysSaveRoot, void* ivs, size_t size)
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{
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nn::Result result;
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using namespace nn::dbg;
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const size_t SEED_SIZE = 16;
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bit8 hash[nn::crypto::Sha256Context::HASH_SIZE];
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const size_t SYS_SAVE_ROOT_LENGTH = 16;
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char rootHash[SYS_SAVE_ROOT_LENGTH];
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char rootStr[SYS_SAVE_ROOT_LENGTH * 2 + 1];
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// 最後の16バイトのハッシュを使う
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nn::crypto::CalculateSha256(hash, &reinterpret_cast<bit8*> (ivs)[size - SEED_SIZE], SEED_SIZE);
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for (u8 i = 0; i < SEED_SIZE / 4; i++)
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{
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for (u8 j = 0; j < SEED_SIZE / 4; j++)
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{
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rootHash[i * 4 + j] = hash[i * 4 + 3 - j];
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}
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}
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// 得られたハッシュから文字列を生成
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for (s32 k = 0; k < SEED_SIZE; k++)
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{
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for (s32 i = 6; i < 8; ++i)
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{
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bit32 n = (rootHash[k] >> ((7 - i) * 4)) & 0xf;
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NN_TASSERT_(n < 16);
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rootStr[i - 6 + k * 2] = static_cast<char> (n < 10 ? '0' + n : 'a' + (n - 10));
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}
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}
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rootStr[SYS_SAVE_ROOT_LENGTH * 2] = '\0';
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// セーブデータディレクトリ名を保存する
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sysSaveRoot = ::std::string(rootStr);
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NN_LOG("%s\n", sysSaveRoot.c_str());
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}
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}
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