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makerom v0.8

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3DSGuy
2014-05-06 07:23:00 +08:00
parent c2a18c961d
commit 1060604377
36 changed files with 2019 additions and 1177 deletions
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crypto.c
+14 -35
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@@ -1,7 +1,6 @@
#include "lib.h"
#include "crypto.h"
// API for polarssl adapted/copied from CTRTOOL by neimod
void ctr_sha(void *data, u64 size, u8 *hash, int mode)
{
switch(mode){
@@ -11,40 +10,20 @@ void ctr_sha(void *data, u64 size, u8 *hash, int mode)
}
u8* AesKeyScrambler(u8 *Key, u8 *KeyX, u8 *KeyY)
{
u32 *KeyX_u32 = (u32*) KeyX;
u32 *KeyY_u32 = (u32*) KeyY;
u32 *Key_u32 = (u32*) Key;
for(int i = 0,j; i < 4; i++)
{
switch(i)
{
///* Type 1
case 0 : j = 2; break;
case 1 : j = 3; break;
case 2 : j = 0; break;
case 3 : j = 1; break;
//*/
/* Type 2
case 0 : j = 3; break;
case 1 : j = 2; break;
case 2 : j = 1; break;
case 3 : j = 0; break;
//*/
/* Type 3
case 0 : j = 1; break;
case 1 : j = 0; break;
case 2 : j = 3; break;
case 3 : j = 2; break;
//*/
}
Key_u32[j] = KeyX_u32[i] ^ KeyY_u32[i];
}
// Done Stuff
return (u8*)Key_u32;
{
// Process KeyX/KeyY to get raw normal key
for(int i = 0; i < 16; i++)
Key[i] = KeyX[i] ^ ((KeyY[i] >> 2) | ((KeyY[i < 15 ? i+1 : 0] & 3) << 6));
#ifndef PUBLIC_BUILD
const u8 SCRAMBLE_SECRET[16] = {0x51, 0xD7, 0x5D, 0xBE, 0xFD, 0x07, 0x57, 0x6A, 0x1C, 0xFC, 0x2A, 0xF0, 0x94, 0x4B, 0xD5, 0x6C};
// Apply Secret to get final normal key
for(int i = 0; i < 16; i++)
Key[i] = Key[i] ^ SCRAMBLE_SECRET[i];
#endif
return Key;
}
void ctr_add_counter(ctr_aes_context* ctx, u32 carry)