AnyPS5/docs/dev/debt/libSceLibreSsl.md

libSceLibreSsl technical debt

Unknown function info

• libSceLibreSsl pending exports - 374 named callable exports are listed in the PS5 3.20 export table and were cross-checked against the same module in PS5 firmware 13.60. Their signatures and behaviour are unverified; the declarations use the no-parameter unknown-signature convention and throw through NotImplemented_nid_no_patch.
• MD4, MD5, SHA1, SHA224, SHA256, SHA384 and SHA512 Init/Update/Final and SHA256 (libSceLibreSsl) - signatures and context layouts follow the LibreSSL headers, and buffering and Final follow its sources; the module's LibreSSL version is unknown and nothing is checked on the console. Behaviour that differs between LibreSSL versions throws: SHA256 with a null digest buffer (older versions return a static buffer) and SHA512_Final with the SHA-512/224 or SHA-512/256 digest length. Null contexts, null input with a nonzero length, null digest buffers in the 32-bit Final functions and a buffered byte count that is not below the block size, which LibreSSL does not check, throw
• DES_set_key, DES_ecb_encrypt, DES_set_odd_parity (libSceLibreSsl) - the 128-byte DES_key_schedule holds the 8-byte key followed by zeros instead of LibreSSL's precomputed subkeys, so a title reading its contents sees different bytes; DES_ecb_encrypt derives the subkeys through mbedtls on each call. Not compared with the console. Results follow LibreSSL des_key.c and des.c: DES_set_key skips the parity and weak-key checks and returns 0, as it does while DES_check_key is 0 (that variable is not in the PS5 export inventory), a nonzero enc encrypts, and DES_set_odd_parity sets each byte's low bit for odd parity. Null pointers throw where LibreSSL faults