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add note about char save file encryption

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Martin Michelsen
2023-03-29 10:40:06 -07:00
parent b4946f5f1e
commit dd1c5a2d0c
1 changed files with 4 additions and 0 deletions
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src/Quest.cc
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@@ -138,6 +138,10 @@ string decrypt_gci_or_vms_v2_data_section(
} }
} }
// Note: Other PSO save files have the round 2 seed at the end of the data,
// not at the beginning. Presumably they did this because the system,
// character, and Guild Card files are a constant size, but download quest
// files can vary in size.
using HeaderT = typename conditional<IsBigEndian, PSOMemCardFileEncryptedHeader<be_uint32_t>, PSOMemCardFileEncryptedHeader<le_uint32_t>>::type; using HeaderT = typename conditional<IsBigEndian, PSOMemCardFileEncryptedHeader<be_uint32_t>, PSOMemCardFileEncryptedHeader<le_uint32_t>>::type;
auto* header = reinterpret_cast<HeaderT*>(decrypted.data()); auto* header = reinterpret_cast<HeaderT*>(decrypted.data());
PSOV2Encryption round2_crypt(header->round2_seed); PSOV2Encryption round2_crypt(header->round2_seed);