wiithon.crypto

Decryption and encryption of partition data.

Partition data is stored in blocks of 0x8000 bytes, each carrying a header of hashes and its own AES initialisation vector. Reading is straightforward. Writing is not: changing a single byte means recomputing a whole tree of SHA-1 hashes before re-encrypting.

Modules

wiithon.crypto.part_reader module: Random access reads into a partition, decrypting blocks on demand.
wiithon.crypto.part_writer module: Writes a partition, rebuilding the hash tree as it goes.
wiithon.crypto.blocks module: Block and group level decryption and encryption.
wiithon.crypto.keys module: Nintendo common keys, and title key derivation.
wiithon.crypto.layout module: Block, subblock and group sizes.

Warning

COMMON_KEYS contains the Nintendo common keys, required to derive the title key of any retail disc.