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Minor hca doc

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bnnm 2018-10-20 22:28:54 +02:00
parent 33aa532c34
commit d779f16c35
1 changed files with 3 additions and 3 deletions
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src/meta/hca_keys.h
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@ -4,8 +4,8 @@
#include "hca_keys_awb.h" #include "hca_keys_awb.h"
typedef struct { typedef struct {
uint64_t key; /* hca key or seed key */ uint64_t key; /* hca key or seed ('user') key */
const uint16_t *subkeys; /* derivation subkey table for seed key */ const uint16_t *subkeys; /* scramble subkey table for seed key */
size_t subkeys_size; /* size of the derivation subkey table */ size_t subkeys_size; /* size of the derivation subkey table */
} hcakey_info; } hcakey_info;
@ -15,7 +15,7 @@ typedef struct {
* CRI's tools expect an unsigned 64 bit number string, but keys are commonly found online in hex form. * CRI's tools expect an unsigned 64 bit number string, but keys are commonly found online in hex form.
* Keys only use 56 bits though, so the upper 8 bits can be ignored. * Keys only use 56 bits though, so the upper 8 bits can be ignored.
* *
* ACB+AWB after mid 2018 use a master seed key + a derivation subkey in the AWB (normally 16b LE at 0x0e) * ACB+AWB after mid 2018 use a user seed key + a scramble subkey in the AWB (normally 16b LE at 0x0e)
* to create the final HCA key, which means there is one key per AWB (so most HCA have a unique key). * to create the final HCA key, which means there is one key per AWB (so most HCA have a unique key).
* vgmstream derives the key if subkey table is provided. * vgmstream derives the key if subkey table is provided.
*/ */