mirror of
https://github.com/DarkStore-3DS/Project_CTR.git
synced 2026-07-02 16:59:03 +00:00
3DSGuy
90 lines
2.9 KiB
C
90 lines
2.9 KiB
C
#include "lib.h"
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#include "cia.h"
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#include "tik.h"
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// Private Prototypes
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int SetupTicketBuffer(COMPONENT_STRUCT *tik);
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int SetupTicketHeader(TicketStruct *hdr, cia_settings *ciaset);
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int SignTicketHeader(TicketStruct *hdr, TicketSignatureStruct *sig, keys_struct *keys);
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void SetUnknownTicketData(u8 *dest, u8 type);
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int BuildTicket(cia_settings *ciaset)
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{
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int result = 0;
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result = SetupTicketBuffer(&ciaset->CIA_Sections.Ticket);
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if(result) return result;
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// Setting Ticket Struct Ptrs
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TicketSignatureStruct *sig = (TicketSignatureStruct*)ciaset->CIA_Sections.Ticket.buffer;
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TicketStruct *hdr = (TicketStruct*)(ciaset->CIA_Sections.Ticket.buffer+sizeof(TicketSignatureStruct));
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result = SetupTicketHeader(hdr,ciaset);
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if(result) return result;
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result = SignTicketHeader(hdr,sig,ciaset->keys);
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return 0;
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}
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int SetupTicketBuffer(COMPONENT_STRUCT *tik)
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{
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tik->size = sizeof(TicketSignatureStruct) + sizeof(TicketStruct);
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tik->buffer = malloc(tik->size);
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if(!tik->buffer) { fprintf(stderr,"[ERROR] MEM ERROR\n"); return MEM_ERROR; }
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memset(tik->buffer,0,tik->size);
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return 0;
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}
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int SetupTicketHeader(TicketStruct *hdr, cia_settings *ciaset)
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{
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memset(hdr,0,sizeof(TicketStruct));
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memcpy(hdr->Issuer,ciaset->tik.TicketIssuer,0x40);
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hdr->TicketFormatVersion = ciaset->tik.ticket_format_ver;
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hdr->ca_crl_version = ciaset->cert.ca_crl_version;
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hdr->signer_crl_version = ciaset->cert.signer_crl_version;
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CryptTitleKey(hdr->EncryptedTitleKey, ciaset->tik.TitleKey,ciaset->TitleID,ciaset->keys,ENC);
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memcpy(hdr->TicketID,ciaset->tik.TicketID,8);
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memcpy(hdr->DeviceID,ciaset->tik.DeviceID,8);
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memcpy(hdr->TitleID,ciaset->TitleID,8);
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memcpy(hdr->TicketVersion,ciaset->tik.TicketVersion,2);
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hdr->CommonKeyID = ciaset->keys->aes.CurrentCommonKey;
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SetUnknownTicketData(hdr->StaticData,ciaset->tik.UnknownDataType);
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return 0;
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}
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int SignTicketHeader(TicketStruct *hdr, TicketSignatureStruct *sig, keys_struct *keys)
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{
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memset(sig,0,sizeof(TicketSignatureStruct));
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u32_to_u8(sig->sig_type,RSA_2048_SHA256,BE);
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return ctr_sig((u8*)hdr,sizeof(TicketStruct),sig->data,keys->rsa.TIK_Pub,keys->rsa.TIK_Priv,RSA_2048_SHA256,CTR_RSA_SIGN);
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}
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int CryptTitleKey(u8 *EncTitleKey, u8 *DecTitleKey, u8 *TitleID, keys_struct *keys, u8 mode)
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{
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//Generating IV
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u8 iv[16];
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memset(&iv,0x0,16);
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memcpy(iv,TitleID,0x8);
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//Setting up Aes Context
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ctr_aes_context ctx;
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memset(&ctx,0x0,sizeof(ctr_aes_context));
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//Crypting TitleKey
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ctr_init_aes_cbc(&ctx,keys->aes.CommonKey[keys->aes.CurrentCommonKey],iv,mode);
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if(mode == ENC) ctr_aes_cbc(&ctx,DecTitleKey,EncTitleKey,0x10,ENC);
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else ctr_aes_cbc(&ctx,EncTitleKey,DecTitleKey,0x10,DEC);
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// Return
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return 0;
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}
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void SetUnknownTicketData(u8 *dest, u8 type)
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{
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switch(type){
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case tik_normal: memcpy(dest,normal_static_ticket_data,0x30); break;
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case tik_system: memcpy(dest,system_static_ticket_data,0x30); break;
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case tik_test: memset(dest,0xff,0x30); break;
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}
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}
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