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(更新:Akabane Jumpei)

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・blowfishのソースを整理

git-svn-id: file:///Users/lillianskinner/Downloads/platinum/twl/TwlIPL/trunk@828 b08762b0-b915-fc4b-9d8c-17b2551a87ff
This commit is contained in:
(no author) 2008-03-05 10:18:52 +00:00
parent 92d40c2243
commit 64a4d850c0
3 changed files with 22 additions and 19 deletions
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2
build/libraries_sysmenu/hotsw/ARM7/include/blowfish.h
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@ -40,7 +40,7 @@ void EncryptByBlowfish(const BLOWFISH_CTX *ctx, u32 *xl, u32 *xr);
void DecryptByBlowfish(const BLOWFISH_CTX *ctx, u32 *xl, u32 *xr);
// Key Table の生成
void GCDm_MakeBlowfishTableDS(BLOWFISH_CTX *tableBufp, ROM_Header_Short *rhs, u32 *keyBufp, s32 keyLen);
void GCDm_MakeBlowfishTableDS(CardBootData *cbd, s32 keyLen);
#ifdef __cplusplus

37
build/libraries_sysmenu/hotsw/ARM7/src/blowfish.c
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@ -25,27 +25,30 @@ static u32 F(const BLOWFISH_CTX *ctx, u32 x);
// GCDm_MakeBlowfishTableDSŠÖ<C5A0>”
//
//*****************************************
void GCDm_MakeBlowfishTableDS(BLOWFISH_CTX *tableBufp, ROM_Header_Short *rhs, u32 *keyBufp, s32 keyLen)
void GCDm_MakeBlowfishTableDS(CardBootData *cbd, s32 keyLen)
{
const BLOWFISH_CTX *blowfishInitTablep = &GCDi_BlowfishInitTableDS;
u32 blowfishedKey[2];
const BLOWFISH_CTX *blowfishInitTablep = &GCDi_BlowfishInitTableDS;
u32 blowfishedKey[2];
MI_CpuCopy32((void *)blowfishInitTablep, (void *)tableBufp, sizeof(BLOWFISH_CTX));
keyBufp[0] = *(u32 *)rhs->game_code;
keyBufp[1] = *(u32 *)rhs->game_code >> 1;
keyBufp[2] = *(u32 *)rhs->game_code << 1;
InitBlowfishKeyAndTableDS(tableBufp, keyBufp, keyLen);
blowfishedKey[0] = (u32)rhs->ctrl_reserved_B[0];
blowfishedKey[1] = *(u32 *)&rhs->ctrl_reserved_B[4];
// OS_TPrintf("Blowfish - key[0]:%d key[1]:%d\n",blowfishedKey[0],blowfishedKey[1]);
u8 *RomHeaderCtrlRsvB = cbd->pBootSegBuf->rh.s.ctrl_reserved_B;
u32 *RomHeaderGameCode = (u32 *)cbd->pBootSegBuf->rh.s.game_code;
u32 *keyBuf = cbd->keyBuf;
BLOWFISH_CTX *ctx = &cbd->keyTable;
DecryptByBlowfish(tableBufp, &(blowfishedKey)[1], &(blowfishedKey)[0]);
MI_CpuCopy32((void *)blowfishInitTablep, (void *)ctx, sizeof(BLOWFISH_CTX));
InitBlowfishKeyAndTableDS(tableBufp, keyBufp, keyLen);
keyBuf[0] = *RomHeaderGameCode;
keyBuf[1] = *RomHeaderGameCode >> 1;
keyBuf[2] = *RomHeaderGameCode << 1;
InitBlowfishKeyAndTableDS(ctx, keyBuf, keyLen);
blowfishedKey[0] = (u32)RomHeaderCtrlRsvB[0];
blowfishedKey[1] = *(u32 *)&RomHeaderCtrlRsvB[4];
DecryptByBlowfish(ctx, &(blowfishedKey)[1], &(blowfishedKey)[0]);
InitBlowfishKeyAndTableDS(ctx, keyBuf, keyLen);
}
//*****************************************

2
build/libraries_sysmenu/hotsw/ARM7/src/hotsw.c
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@ -380,7 +380,7 @@ static HotSwState LoadCardData(void)
s_cbData.secureLatency = AddLatency2ToLatency1(s_cbData.pBootSegBuf->rh.s.secure_cmd_param);
// Key Table初期化
GCDm_MakeBlowfishTableDS(&s_cbData.keyTable, &s_pBootSegBuffer->rh.s, s_cbData.keyBuf, 8);
GCDm_MakeBlowfishTableDS(&s_cbData, 8);
// コマンド認証値・コマンドカウンタ初期値・PNジェネレータ初期値の生成
GenVA_VB_VD();