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IOS/ES: Handle fake-signed tickets properly 

Fake-signed tickets have a bogus common key index, in which case we
must assume and use the normal common key to decrypt contents.
This commit is contained in:
Léo Lam 2017-05-09 20:56:42 +02:00
parent d21f1b24f8
commit 6b8cb2ee41
1 changed files with 9 additions and 3 deletions
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12
Source/Core/Core/IOS/ES/Formats.cpp
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@ -289,9 +289,15 @@ std::vector<u8> TicketReader::GetTitleKey() const
{
u8 iv[16] = {};
std::copy_n(&m_bytes[offsetof(Ticket, title_id)], sizeof(Ticket::title_id), iv);
auto common_key_handle = m_bytes.at(offsetof(Ticket, common_key_index)) == 0 ?
HLE::IOSC::HANDLE_COMMON_KEY :
HLE::IOSC::HANDLE_NEW_COMMON_KEY;
const u8 index = m_bytes.at(offsetof(Ticket, common_key_index));
auto common_key_handle =
index != 1 ? HLE::IOSC::HANDLE_COMMON_KEY : HLE::IOSC::HANDLE_NEW_COMMON_KEY;
if (index != 0 && index != 1)
{
WARN_LOG(IOS_ES, "Bad common key index for title %016" PRIx64 ": %u -- using common key 0",
GetTitleId(), index);
}
std::vector<u8> key(16);
HLE::IOSC iosc;