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TegraExplorer/source/tegraexplorer/fs/nca.c

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#include "nca.h"
#include "keys.h"
#include "../../utils/types.h"
#include "../../libs/fatfs/ff.h"
#include "../../sec/se.h"
#include "../../mem/heap.h"
#include "../gfx/gfxutils.h"
#include "../../config/ini.h"
#include "../common/common.h"
#include <string.h>
int SetHeaderKey(){
u8 *header_key = GetKey("sd:/switch/prod.keys", "header_key");
if (header_key == NULL)
return -1;
se_aes_key_set(4, header_key + 0x00, 0x10);
se_aes_key_set(5, header_key + 0x10, 0x10);
return 0;
}
int GetNcaType(char *ncaPath){
FIL fp;
u32 read_bytes = 0;
if (f_open(&fp, ncaPath, FA_READ | FA_OPEN_EXISTING))
return -1;
u8 *dec_header = (u8*)malloc(0x600);
if (f_lseek(&fp, 0x200) || f_read(&fp, dec_header, 32, &read_bytes) || read_bytes != 32){
f_close(&fp);
free(dec_header);
return -1;
}
se_aes_xts_crypt(5,4,0,1,dec_header + 0x200, dec_header, 32, 1);
u8 ContentType = dec_header[0x205];
f_close(&fp);
free(dec_header);
return ContentType;
}