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cleanup: use helpers for adx keys
This commit is contained in:
bnnm
parent
d5b0bba8ed
commit
5c8454aaaf
@ -6,6 +6,7 @@
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#include "meta.h"
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#include "adx_keys.h"
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#include "../coding/coding.h"
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#include "../util/cri_keys.h"
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#ifdef VGM_DEBUG_OUTPUT
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@ -280,39 +281,32 @@ static int find_adx_key(STREAMFILE* sf, uint8_t type, uint16_t *xor_start, uint1
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key_size = read_key_file(keybuf, sizeof(keybuf), sf);
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if (key_size > 0) {
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int is_ascii = 0;
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int is_keystring = 0;
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/* keystrings should be ASCII, also needed to tell apart 0x06 strings from derived keys */
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if (type == 8) {
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is_ascii = 1;
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for (i = 0; i < key_size; i++) {
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if (keybuf[i] < 0x20 || keybuf[i] > 0x7f) {
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is_ascii = 0;
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break;
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}
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}
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is_keystring = cri_key8_valid_keystring(keybuf, key_size);
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}
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if (key_size == 0x06 && !is_ascii) {
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if (key_size == 0x06 && !is_keystring) {
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*xor_start = get_u16be(keybuf + 0x00);
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*xor_mult = get_u16be(keybuf + 0x02);
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*xor_add = get_u16be(keybuf + 0x04);
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return 1;
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}
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else if (type == 8 && is_ascii) {
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else if (type == 8 && is_keystring) {
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const char* keystring = (const char*)keybuf;
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derive_adx_key8(keystring, xor_start, xor_mult, xor_add);
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cri_key8_derive(keystring, xor_start, xor_mult, xor_add);
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return 1;
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}
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else if (type == 9 && key_size == 0x08) {
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uint64_t keycode = get_u64be(keybuf);
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derive_adx_key9(keycode, subkey, xor_start, xor_mult, xor_add);
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cri_key9_derive(keycode, subkey, xor_start, xor_mult, xor_add);
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return 1;
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}
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else if (type == 9 && key_size == 0x08+0x02) {
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uint64_t file_keycode = get_u64be(keybuf+0x00);
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uint16_t file_subkey = get_u16be(keybuf+0x08);
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derive_adx_key9(file_keycode, file_subkey, xor_start, xor_mult, xor_add);
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cri_key9_derive(file_keycode, file_subkey, xor_start, xor_mult, xor_add);
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return 1;
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}
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}
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@ -438,7 +432,7 @@ static int find_adx_key(STREAMFILE* sf, uint8_t type, uint16_t *xor_start, uint1
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#ifdef ADX_BRUTEFORCE
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if (buf) {
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keycode = get_u64be(buf + key_id);
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derive_adx_key9(keycode, subkey, &key_xor, &key_mul, &key_add);
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cri_key9_derive(keycode, subkey, &key_xor, &key_mul, &key_add);
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}
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else
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#endif
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@ -450,11 +444,11 @@ static int find_adx_key(STREAMFILE* sf, uint8_t type, uint16_t *xor_start, uint1
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key_add = keys[key_id].add;
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}
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else if (type == 8 && keys[key_id].key8) {
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derive_adx_key8(keys[key_id].key8, &key_xor, &key_mul, &key_add);
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cri_key8_derive(keys[key_id].key8, &key_xor, &key_mul, &key_add);
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}
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else if (type == 9 && keys[key_id].key9) {
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uint64_t keycode = keys[key_id].key9;
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derive_adx_key9(keycode, subkey, &key_xor, &key_mul, &key_add);
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cri_key9_derive(keycode, subkey, &key_xor, &key_mul, &key_add);
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}
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else {
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VGM_LOG("ADX: incorrectly defined key id=%i\n", key_id);
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@ -474,13 +468,13 @@ static int find_adx_key(STREAMFILE* sf, uint8_t type, uint16_t *xor_start, uint1
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mul = keys[key_id].mult;
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add = keys[key_id].add;
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if (type == 8 && keys[key_id].key8) {
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derive_adx_key8(keys[key_id].key8, &test_xor, &test_mul, &test_add);
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cri_key8_derive(keys[key_id].key8, &test_xor, &test_mul, &test_add);
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VGM_LOG("key8: pre=%04x %04x %04x vs calc=%04x %04x %04x = %s (\"%s\")\n",
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xor,mul,add, test_xor,test_mul,test_add,
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xor==test_xor && mul==test_mul && add==test_add ? "ok" : "ko", keys[key_id].key8);
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}
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else if (type == 9 && keys[key_id].key9) {
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derive_adx_key9(keys[key_id].key9, subkey, &test_xor, &test_mul, &test_add);
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cri_key9_derive(keys[key_id].key9, subkey, &test_xor, &test_mul, &test_add);
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VGM_LOG("key9: pre=%04x %04x %04x vs calc=%04x %04x %04x = %s (%"PRIu64")\n",
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xor,mul,add, test_xor,test_mul,test_add,
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xor==test_xor && mul==test_mul && add==test_add ? "ok" : "ko", keys[key_id].key9);
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@ -1,6 +1,8 @@
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#ifndef _ADX_KEYS_H_
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#define _ADX_KEYS_H_
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#include <stdint.h>
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#include <string.h>
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typedef struct {
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uint16_t start, mult, add; /* XOR values derived from the actual key */
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@ -53,7 +55,7 @@ static const adxkey_info adxkey8_list[] = {
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{0x55b7,0x6191,0x5a77, "morio",0},
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/* Amagami (PS2) [Enterbrain] */
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{0x5a17,0x509f,0x5bfd, "mituba",0}, /* also AHX key */
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{0x5a17,0x509f,0x5bfd, "mituba",0},
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/* Yamasa Digi Portable: Matsuri no Tatsujin (PSP) [Yamasa] */
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{0x4c01,0x549d,0x676f, "7fa0xB9tw3",0},
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@ -122,7 +124,7 @@ static const adxkey_info adxkey8_list[] = {
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{0x4c73,0x4d8d,0x5827, "URABOKU-penguin",0},
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/* StormLover!! (PSP), StormLover Kai!! (PSP) [Vridge] */
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{0x5a11,0x67e5,0x6751, "HEXDPFMDKPQW",0}, /* unknown AHX key */
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{0x5a11,0x67e5,0x6751, "HEXDPFMDKPQW",0},
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/* Sora no Otoshimono: DokiDoki Summer Vacation (PSP) [Kadokawa Shoten] */
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{0x5e75,0x4a89,0x4c61, "funen-gomi",0},
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@ -131,25 +133,26 @@ static const adxkey_info adxkey8_list[] = {
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{0x64ab,0x5297,0x632f, "sonic",0},
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/* Lucky Star: Net Idol Meister (PSP) [Vridge, Kadokawa Shoten] */
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{0x4d81,0x5243,0x58c7, "JJOLIFJLE",0}, /* unknown AHX key */
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/* Baka to Test to Shoukanjuu Portable (PSP) */
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{0x4d81,0x5243,0x58c7, "JJOLIFJLE",0},
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/* Ishin Renka: Ryouma Gaiden (PSP) [Vridge] */
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{0x54d1,0x526d,0x5e8b, "LQAFJOIEJ",0}, /* unknown AHX key */
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{0x54d1,0x526d,0x5e8b, "LQAFJOIEJ",0},
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/* Lucky Star: Ryouou Gakuen Outousai Portable (PSP) [Vridge] */
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{0x4d05,0x663b,0x6343, "IUNOIRU",0}, /* unknown AHX key */
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{0x4d05,0x663b,0x6343, "IUNOIRU",0},
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/* Marriage Royale: Prism Story (PSP) [Vridge] */
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{0x40a9,0x46b1,0x62ad, "ROYMAR",0}, /* unknown AHX key */
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{0x40a9,0x46b1,0x62ad, "ROYMAR",0},
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/* Nogizaka Haruka no Himitsu: Doujinshi Hajimemashita (PSP) [Vridge] */
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{0x4609,0x671f,0x4b65, "CLKMEOUHFLIE",0}, /* unknown AHX key */
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{0x4609,0x671f,0x4b65, "CLKMEOUHFLIE",0},
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/* Slotter Mania P: Mach Go Go Go III (PSP) [Dorart] */
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{0x41ef,0x463d,0x5507, "SGGK",0},
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/* Nichijou: Uchuujin (PSP) [Vridge] */
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{0x4369,0x486d,0x5461, "LJLOUHIU787",0}, /* unknown AHX key */
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{0x4369,0x486d,0x5461, "LJLOUHIU787",0},
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/* R-15 Portable (PSP) [Kadokawa Shoten] */
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{0x6809,0x5fd5,0x5bb1, "R-15(Heart)Love",0},
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@ -158,7 +161,7 @@ static const adxkey_info adxkey8_list[] = {
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{0x5c33,0x4133,0x4ce7, "bi88a#fas",0},
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/* StormLover Natsu Koi!! (PSP) [Vridge] */
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{0x4133,0x5a01,0x5723, "LIKDFJUIDJOQ",0}, /* unknown AHX key */
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{0x4133,0x5a01,0x5723, "LIKDFJUIDJOQ",0},
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/* Shounen Onmyouji: Tsubasa yo Ima, Sora e Kaere (PS2) [Kadokawa Shoten] */
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{0x55d9,0x46d3,0x5b01, "SONMYOJI",0},
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@ -272,129 +275,4 @@ static const adxkey_info adxkey9_list[] = {
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static const int adxkey8_list_count = sizeof(adxkey8_list) / sizeof(adxkey8_list[0]);
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static const int adxkey9_list_count = sizeof(adxkey9_list) / sizeof(adxkey9_list[0]);
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/* preloaded list used to derive keystrings from ADX_Decoder, found in executables (see VGAudio for how to calculate) */
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static const uint16_t key8_primes[0x400] = {
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0x401B,0x4021,0x4025,0x402B,0x4031,0x403F,0x4043,0x4045,0x405D,0x4061,0x4067,0x406D,0x4087,0x4091,0x40A3,0x40A9,
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0x40B1,0x40B7,0x40BD,0x40DB,0x40DF,0x40EB,0x40F7,0x40F9,0x4109,0x410B,0x4111,0x4115,0x4121,0x4133,0x4135,0x413B,
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0x413F,0x4159,0x4165,0x416B,0x4177,0x417B,0x4193,0x41AB,0x41B7,0x41BD,0x41BF,0x41CB,0x41E7,0x41EF,0x41F3,0x41F9,
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0x4205,0x4207,0x4219,0x421F,0x4223,0x4229,0x422F,0x4243,0x4253,0x4255,0x425B,0x4261,0x4273,0x427D,0x4283,0x4285,
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0x4289,0x4291,0x4297,0x429D,0x42B5,0x42C5,0x42CB,0x42D3,0x42DD,0x42E3,0x42F1,0x4307,0x430F,0x431F,0x4325,0x4327,
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0x4333,0x4337,0x4339,0x434F,0x4357,0x4369,0x438B,0x438D,0x4393,0x43A5,0x43A9,0x43AF,0x43B5,0x43BD,0x43C7,0x43CF,
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0x43E1,0x43E7,0x43EB,0x43ED,0x43F1,0x43F9,0x4409,0x440B,0x4417,0x4423,0x4429,0x443B,0x443F,0x4445,0x444B,0x4451,
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0x4453,0x4459,0x4465,0x446F,0x4483,0x448F,0x44A1,0x44A5,0x44AB,0x44AD,0x44BD,0x44BF,0x44C9,0x44D7,0x44DB,0x44F9,
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0x44FB,0x4505,0x4511,0x4513,0x452B,0x4531,0x4541,0x4549,0x4553,0x4555,0x4561,0x4577,0x457D,0x457F,0x458F,0x45A3,
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0x45AD,0x45AF,0x45BB,0x45C7,0x45D9,0x45E3,0x45EF,0x45F5,0x45F7,0x4601,0x4603,0x4609,0x4613,0x4625,0x4627,0x4633,
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0x4639,0x463D,0x4643,0x4645,0x465D,0x4679,0x467B,0x467F,0x4681,0x468B,0x468D,0x469D,0x46A9,0x46B1,0x46C7,0x46C9,
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0x46CF,0x46D3,0x46D5,0x46DF,0x46E5,0x46F9,0x4705,0x470F,0x4717,0x4723,0x4729,0x472F,0x4735,0x4739,0x474B,0x474D,
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0x4751,0x475D,0x476F,0x4771,0x477D,0x4783,0x4787,0x4789,0x4799,0x47A5,0x47B1,0x47BF,0x47C3,0x47CB,0x47DD,0x47E1,
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0x47ED,0x47FB,0x4801,0x4807,0x480B,0x4813,0x4819,0x481D,0x4831,0x483D,0x4847,0x4855,0x4859,0x485B,0x486B,0x486D,
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0x4879,0x4897,0x489B,0x48A1,0x48B9,0x48CD,0x48E5,0x48EF,0x48F7,0x4903,0x490D,0x4919,0x491F,0x492B,0x4937,0x493D,
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0x4945,0x4955,0x4963,0x4969,0x496D,0x4973,0x4997,0x49AB,0x49B5,0x49D3,0x49DF,0x49E1,0x49E5,0x49E7,0x4A03,0x4A0F,
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0x4A1D,0x4A23,0x4A39,0x4A41,0x4A45,0x4A57,0x4A5D,0x4A6B,0x4A7D,0x4A81,0x4A87,0x4A89,0x4A8F,0x4AB1,0x4AC3,0x4AC5,
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0x4AD5,0x4ADB,0x4AED,0x4AEF,0x4B07,0x4B0B,0x4B0D,0x4B13,0x4B1F,0x4B25,0x4B31,0x4B3B,0x4B43,0x4B49,0x4B59,0x4B65,
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0x4B6D,0x4B77,0x4B85,0x4BAD,0x4BB3,0x4BB5,0x4BBB,0x4BBF,0x4BCB,0x4BD9,0x4BDD,0x4BDF,0x4BE3,0x4BE5,0x4BE9,0x4BF1,
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0x4BF7,0x4C01,0x4C07,0x4C0D,0x4C0F,0x4C15,0x4C1B,0x4C21,0x4C2D,0x4C33,0x4C4B,0x4C55,0x4C57,0x4C61,0x4C67,0x4C73,
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0x4C79,0x4C7F,0x4C8D,0x4C93,0x4C99,0x4CCD,0x4CE1,0x4CE7,0x4CF1,0x4CF3,0x4CFD,0x4D05,0x4D0F,0x4D1B,0x4D27,0x4D29,
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0x4D2F,0x4D33,0x4D41,0x4D51,0x4D59,0x4D65,0x4D6B,0x4D81,0x4D83,0x4D8D,0x4D95,0x4D9B,0x4DB1,0x4DB3,0x4DC9,0x4DCF,
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0x4DD7,0x4DE1,0x4DED,0x4DF9,0x4DFB,0x4E05,0x4E0B,0x4E17,0x4E19,0x4E1D,0x4E2B,0x4E35,0x4E37,0x4E3D,0x4E4F,0x4E53,
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0x4E5F,0x4E67,0x4E79,0x4E85,0x4E8B,0x4E91,0x4E95,0x4E9B,0x4EA1,0x4EAF,0x4EB3,0x4EB5,0x4EC1,0x4ECD,0x4ED1,0x4ED7,
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0x4EE9,0x4EFB,0x4F07,0x4F09,0x4F19,0x4F25,0x4F2D,0x4F3F,0x4F49,0x4F63,0x4F67,0x4F6D,0x4F75,0x4F7B,0x4F81,0x4F85,
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0x4F87,0x4F91,0x4FA5,0x4FA9,0x4FAF,0x4FB7,0x4FBB,0x4FCF,0x4FD9,0x4FDB,0x4FFD,0x4FFF,0x5003,0x501B,0x501D,0x5029,
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0x5035,0x503F,0x5045,0x5047,0x5053,0x5071,0x5077,0x5083,0x5093,0x509F,0x50A1,0x50B7,0x50C9,0x50D5,0x50E3,0x50ED,
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0x50EF,0x50FB,0x5107,0x510B,0x510D,0x5111,0x5117,0x5123,0x5125,0x5135,0x5147,0x5149,0x5171,0x5179,0x5189,0x518F,
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0x5197,0x51A1,0x51A3,0x51A7,0x51B9,0x51C1,0x51CB,0x51D3,0x51DF,0x51E3,0x51F5,0x51F7,0x5209,0x5213,0x5215,0x5219,
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0x521B,0x521F,0x5227,0x5243,0x5245,0x524B,0x5261,0x526D,0x5273,0x5281,0x5293,0x5297,0x529D,0x52A5,0x52AB,0x52B1,
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0x52BB,0x52C3,0x52C7,0x52C9,0x52DB,0x52E5,0x52EB,0x52FF,0x5315,0x531D,0x5323,0x5341,0x5345,0x5347,0x534B,0x535D,
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0x5363,0x5381,0x5383,0x5387,0x538F,0x5395,0x5399,0x539F,0x53AB,0x53B9,0x53DB,0x53E9,0x53EF,0x53F3,0x53F5,0x53FB,
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0x53FF,0x540D,0x5411,0x5413,0x5419,0x5435,0x5437,0x543B,0x5441,0x5449,0x5453,0x5455,0x545F,0x5461,0x546B,0x546D,
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0x5471,0x548F,0x5491,0x549D,0x54A9,0x54B3,0x54C5,0x54D1,0x54DF,0x54E9,0x54EB,0x54F7,0x54FD,0x5507,0x550D,0x551B,
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0x5527,0x552B,0x5539,0x553D,0x554F,0x5551,0x555B,0x5563,0x5567,0x556F,0x5579,0x5585,0x5597,0x55A9,0x55B1,0x55B7,
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0x55C9,0x55D9,0x55E7,0x55ED,0x55F3,0x55FD,0x560B,0x560F,0x5615,0x5617,0x5623,0x562F,0x5633,0x5639,0x563F,0x564B,
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0x564D,0x565D,0x565F,0x566B,0x5671,0x5675,0x5683,0x5689,0x568D,0x568F,0x569B,0x56AD,0x56B1,0x56D5,0x56E7,0x56F3,
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0x56FF,0x5701,0x5705,0x5707,0x570B,0x5713,0x571F,0x5723,0x5747,0x574D,0x575F,0x5761,0x576D,0x5777,0x577D,0x5789,
|
||||
0x57A1,0x57A9,0x57AF,0x57B5,0x57C5,0x57D1,0x57D3,0x57E5,0x57EF,0x5803,0x580D,0x580F,0x5815,0x5827,0x582B,0x582D,
|
||||
0x5855,0x585B,0x585D,0x586D,0x586F,0x5873,0x587B,0x588D,0x5897,0x58A3,0x58A9,0x58AB,0x58B5,0x58BD,0x58C1,0x58C7,
|
||||
0x58D3,0x58D5,0x58DF,0x58F1,0x58F9,0x58FF,0x5903,0x5917,0x591B,0x5921,0x5945,0x594B,0x594D,0x5957,0x595D,0x5975,
|
||||
0x597B,0x5989,0x5999,0x599F,0x59B1,0x59B3,0x59BD,0x59D1,0x59DB,0x59E3,0x59E9,0x59ED,0x59F3,0x59F5,0x59FF,0x5A01,
|
||||
0x5A0D,0x5A11,0x5A13,0x5A17,0x5A1F,0x5A29,0x5A2F,0x5A3B,0x5A4D,0x5A5B,0x5A67,0x5A77,0x5A7F,0x5A85,0x5A95,0x5A9D,
|
||||
0x5AA1,0x5AA3,0x5AA9,0x5ABB,0x5AD3,0x5AE5,0x5AEF,0x5AFB,0x5AFD,0x5B01,0x5B0F,0x5B19,0x5B1F,0x5B25,0x5B2B,0x5B3D,
|
||||
0x5B49,0x5B4B,0x5B67,0x5B79,0x5B87,0x5B97,0x5BA3,0x5BB1,0x5BC9,0x5BD5,0x5BEB,0x5BF1,0x5BF3,0x5BFD,0x5C05,0x5C09,
|
||||
0x5C0B,0x5C0F,0x5C1D,0x5C29,0x5C2F,0x5C33,0x5C39,0x5C47,0x5C4B,0x5C4D,0x5C51,0x5C6F,0x5C75,0x5C77,0x5C7D,0x5C87,
|
||||
0x5C89,0x5CA7,0x5CBD,0x5CBF,0x5CC3,0x5CC9,0x5CD1,0x5CD7,0x5CDD,0x5CED,0x5CF9,0x5D05,0x5D0B,0x5D13,0x5D17,0x5D19,
|
||||
0x5D31,0x5D3D,0x5D41,0x5D47,0x5D4F,0x5D55,0x5D5B,0x5D65,0x5D67,0x5D6D,0x5D79,0x5D95,0x5DA3,0x5DA9,0x5DAD,0x5DB9,
|
||||
0x5DC1,0x5DC7,0x5DD3,0x5DD7,0x5DDD,0x5DEB,0x5DF1,0x5DFD,0x5E07,0x5E0D,0x5E13,0x5E1B,0x5E21,0x5E27,0x5E2B,0x5E2D,
|
||||
0x5E31,0x5E39,0x5E45,0x5E49,0x5E57,0x5E69,0x5E73,0x5E75,0x5E85,0x5E8B,0x5E9F,0x5EA5,0x5EAF,0x5EB7,0x5EBB,0x5ED9,
|
||||
0x5EFD,0x5F09,0x5F11,0x5F27,0x5F33,0x5F35,0x5F3B,0x5F47,0x5F57,0x5F5D,0x5F63,0x5F65,0x5F77,0x5F7B,0x5F95,0x5F99,
|
||||
0x5FA1,0x5FB3,0x5FBD,0x5FC5,0x5FCF,0x5FD5,0x5FE3,0x5FE7,0x5FFB,0x6011,0x6023,0x602F,0x6037,0x6053,0x605F,0x6065,
|
||||
0x606B,0x6073,0x6079,0x6085,0x609D,0x60AD,0x60BB,0x60BF,0x60CD,0x60D9,0x60DF,0x60E9,0x60F5,0x6109,0x610F,0x6113,
|
||||
0x611B,0x612D,0x6139,0x614B,0x6155,0x6157,0x615B,0x616F,0x6179,0x6187,0x618B,0x6191,0x6193,0x619D,0x61B5,0x61C7,
|
||||
0x61C9,0x61CD,0x61E1,0x61F1,0x61FF,0x6209,0x6217,0x621D,0x6221,0x6227,0x623B,0x6241,0x624B,0x6251,0x6253,0x625F,
|
||||
0x6265,0x6283,0x628D,0x6295,0x629B,0x629F,0x62A5,0x62AD,0x62D5,0x62D7,0x62DB,0x62DD,0x62E9,0x62FB,0x62FF,0x6305,
|
||||
0x630D,0x6317,0x631D,0x632F,0x6341,0x6343,0x634F,0x635F,0x6367,0x636D,0x6371,0x6377,0x637D,0x637F,0x63B3,0x63C1,
|
||||
0x63C5,0x63D9,0x63E9,0x63EB,0x63EF,0x63F5,0x6401,0x6403,0x6409,0x6415,0x6421,0x6427,0x642B,0x6439,0x6443,0x6449,
|
||||
0x644F,0x645D,0x6467,0x6475,0x6485,0x648D,0x6493,0x649F,0x64A3,0x64AB,0x64C1,0x64C7,0x64C9,0x64DB,0x64F1,0x64F7,
|
||||
0x64F9,0x650B,0x6511,0x6521,0x652F,0x6539,0x653F,0x654B,0x654D,0x6553,0x6557,0x655F,0x6571,0x657D,0x658D,0x658F,
|
||||
0x6593,0x65A1,0x65A5,0x65AD,0x65B9,0x65C5,0x65E3,0x65F3,0x65FB,0x65FF,0x6601,0x6607,0x661D,0x6629,0x6631,0x663B,
|
||||
0x6641,0x6647,0x664D,0x665B,0x6661,0x6673,0x667D,0x6689,0x668B,0x6695,0x6697,0x669B,0x66B5,0x66B9,0x66C5,0x66CD,
|
||||
0x66D1,0x66E3,0x66EB,0x66F5,0x6703,0x6713,0x6719,0x671F,0x6727,0x6731,0x6737,0x673F,0x6745,0x6751,0x675B,0x676F,
|
||||
0x6779,0x6781,0x6785,0x6791,0x67AB,0x67BD,0x67C1,0x67CD,0x67DF,0x67E5,0x6803,0x6809,0x6811,0x6817,0x682D,0x6839,
|
||||
};
|
||||
|
||||
static void derive_adx_key8(const char* key8, uint16_t* p_start, uint16_t* p_mult, uint16_t* p_add) {
|
||||
size_t key_size;
|
||||
uint16_t start = 0, mult = 0, add = 0;
|
||||
int i;
|
||||
|
||||
if (key8 == NULL || key8[0] == '\0') /* strlen >= 1 */
|
||||
goto end;
|
||||
|
||||
/* calcs as found in exes, though there is some unrolling in the original code */
|
||||
key_size = strlen(key8);
|
||||
start = key8_primes[0x100];
|
||||
mult = key8_primes[0x200];
|
||||
add = key8_primes[0x300];
|
||||
|
||||
for (i = 0; i < key_size; i++) {
|
||||
char c = key8[i];
|
||||
start = key8_primes[start * key8_primes[c + 0x80] % 0x400];
|
||||
mult = key8_primes[mult * key8_primes[c + 0x80] % 0x400];
|
||||
add = key8_primes[add * key8_primes[c + 0x80] % 0x400];
|
||||
}
|
||||
|
||||
end:
|
||||
*p_start = start;
|
||||
*p_mult = mult;
|
||||
*p_add = add;
|
||||
}
|
||||
|
||||
|
||||
static void derive_adx_key9(uint64_t key9, uint16_t subkey, uint16_t* p_start, uint16_t* p_mult, uint16_t* p_add) {
|
||||
uint16_t start = 0, mult = 0, add = 0;
|
||||
|
||||
/* 0 is ignored by CRI's encoder, only from 1..18446744073709551615 */
|
||||
if (key9 == 0)
|
||||
goto end;
|
||||
|
||||
if (subkey) {
|
||||
key9 = key9 * ( ((uint64_t)subkey << 16u) | ((uint16_t)~subkey + 2u) );
|
||||
}
|
||||
|
||||
key9--;
|
||||
start = (int)(((key9 >> 27) & 0x7fff));
|
||||
mult = (int)(((key9 >> 12) & 0x7ffc) | 1);
|
||||
add = (int)(((key9 << 1 ) & 0x7fff) | 1);
|
||||
|
||||
/* alt from ADX_Decoder, probably the same */
|
||||
//start = ((key9 >> 27) & 0x7FFF);
|
||||
//mult = ((key9 >> 12) & 0x7FFC) | 1;
|
||||
//add = ((key9 << 1 ) & 0x7FFE) | 1;
|
||||
//mult |= add << 16;
|
||||
|
||||
end:
|
||||
*p_start = start;
|
||||
*p_mult = mult;
|
||||
*p_add = add;
|
||||
}
|
||||
|
||||
#endif/*_ADX_KEYS_H_*/
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user