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makerom v0.1

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3DSGuy
2014-02-16 16:55:00 +08:00
commit 0155b2098e
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tik.c
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#include "lib.h"
#include "cia.h"
#include "tik.h"
// Private Prototypes
int SetupTicketBuffer(COMPONENT_STRUCT *tik);
int SetupTicketHeader(TicketStruct *hdr, cia_settings *ciaset);
int SignTicketHeader(TicketStruct *hdr, TicketSignatureStruct *sig, keys_struct *keys);
void SetUnknownTicketData(u8 *dest, u8 type);
int BuildTicket(cia_settings *ciaset)
{
int result = 0;
result = SetupTicketBuffer(&ciaset->CIA_Sections.Ticket);
if(result) return result;
// Setting Ticket Struct Ptrs
TicketSignatureStruct *sig = (TicketSignatureStruct*)ciaset->CIA_Sections.Ticket.buffer;
TicketStruct *hdr = (TicketStruct*)(ciaset->CIA_Sections.Ticket.buffer+sizeof(TicketSignatureStruct));
result = SetupTicketHeader(hdr,ciaset);
if(result) return result;
result = SignTicketHeader(hdr,sig,ciaset->keys);
return 0;
}
int SetupTicketBuffer(COMPONENT_STRUCT *tik)
{
tik->size = sizeof(TicketSignatureStruct) + sizeof(TicketStruct);
tik->buffer = malloc(tik->size);
if(!tik->buffer) { fprintf(stderr,"[ERROR] MEM ERROR\n"); return MEM_ERROR; }
memset(tik->buffer,0,tik->size);
return 0;
}
int SetupTicketHeader(TicketStruct *hdr, cia_settings *ciaset)
{
memset(hdr,0,sizeof(TicketStruct));
memcpy(hdr->Issuer,ciaset->tik.TicketIssuer,0x40);
hdr->TicketFormatVersion = ciaset->tik.ticket_format_ver;
hdr->ca_crl_version = ciaset->cert.ca_crl_version;
hdr->signer_crl_version = ciaset->cert.signer_crl_version;
CryptTitleKey(hdr->EncryptedTitleKey, ciaset->tik.TitleKey,ciaset->TitleID,ciaset->keys,ENC);
memcpy(hdr->TicketID,ciaset->tik.TicketID,8);
memcpy(hdr->DeviceID,ciaset->tik.DeviceID,8);
memcpy(hdr->TitleID,ciaset->TitleID,8);
memcpy(hdr->TicketVersion,ciaset->tik.TicketVersion,2);
hdr->CommonKeyID = ciaset->keys->aes.CurrentCommonKey;
SetUnknownTicketData(hdr->StaticData,ciaset->tik.UnknownDataType);
return 0;
}
int SignTicketHeader(TicketStruct *hdr, TicketSignatureStruct *sig, keys_struct *keys)
{
memset(sig,0,sizeof(TicketSignatureStruct));
u32_to_u8(sig->sig_type,RSA_2048_SHA256,BE);
return ctr_sig((u8*)hdr,sizeof(TicketStruct),sig->data,keys->rsa.TIK_Pub,keys->rsa.TIK_Priv,RSA_2048_SHA256,CTR_RSA_SIGN);
}
int CryptTitleKey(u8 *EncTitleKey, u8 *DecTitleKey, u8 *TitleID, keys_struct *keys, u8 mode)
{
//Generating IV
u8 iv[16];
memset(&iv,0x0,16);
memcpy(iv,TitleID,0x8);
//Setting up Aes Context
ctr_aes_context ctx;
memset(&ctx,0x0,sizeof(ctr_aes_context));
//Crypting TitleKey
ctr_init_aes_cbc(&ctx,keys->aes.CommonKey[keys->aes.CurrentCommonKey],iv,mode);
if(mode == ENC) ctr_aes_cbc(&ctx,DecTitleKey,EncTitleKey,0x10,ENC);
else ctr_aes_cbc(&ctx,EncTitleKey,DecTitleKey,0x10,DEC);
// Return
return 0;
}
void SetUnknownTicketData(u8 *dest, u8 type)
{
switch(type){
case tik_normal: memcpy(dest,normal_static_ticket_data,0x30); break;
case tik_system: memcpy(dest,system_static_ticket_data,0x30); break;
case tik_test: memset(dest,0xff,0x30); break;
}
}