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https://github.com/CTCaer/hekate
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hos: Add BIS keys derivation
This commit is contained in:
CTCaer
parent
2aa9055fae
commit
edba8ca986
2 changed files with 299 additions and 0 deletions
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@ -43,6 +43,8 @@
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extern hekate_config h_cfg;
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static u8 *bis_keys = NULL;
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//#define DPRINTF(...) gfx_printf(__VA_ARGS__)
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#define DPRINTF(...)
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@ -90,6 +92,63 @@ static const u8 master_keyseed_620[0x10] =
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static const u8 console_keyseed_4xx_5xx[0x10] =
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{ 0x0C, 0x91, 0x09, 0xDB, 0x93, 0x93, 0x07, 0x81, 0x07, 0x3C, 0xC4, 0x16, 0x22, 0x7C, 0x6C, 0x28 };
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static const u8 mkey_vectors[KB_FIRMWARE_VERSION_MAX + 1][0x10] = {
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{ 0x0C, 0xF0, 0x59, 0xAC, 0x85, 0xF6, 0x26, 0x65, 0xE1, 0xE9, 0x19, 0x55, 0xE6, 0xF2, 0x67, 0x3D }, // Zeroes encrypted with mkey 00.
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{ 0x29, 0x4C, 0x04, 0xC8, 0xEB, 0x10, 0xED, 0x9D, 0x51, 0x64, 0x97, 0xFB, 0xF3, 0x4D, 0x50, 0xDD }, // Mkey 00 encrypted with mkey 01.
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{ 0xDE, 0xCF, 0xEB, 0xEB, 0x10, 0xAE, 0x74, 0xD8, 0xAD, 0x7C, 0xF4, 0x9E, 0x62, 0xE0, 0xE8, 0x72 }, // Mkey 01 encrypted with mkey 02.
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{ 0x0A, 0x0D, 0xDF, 0x34, 0x22, 0x06, 0x6C, 0xA4, 0xE6, 0xB1, 0xEC, 0x71, 0x85, 0xCA, 0x4E, 0x07 }, // Mkey 02 encrypted with mkey 03.
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{ 0x6E, 0x7D, 0x2D, 0xC3, 0x0F, 0x59, 0xC8, 0xFA, 0x87, 0xA8, 0x2E, 0xD5, 0x89, 0x5E, 0xF3, 0xE9 }, // Mkey 03 encrypted with mkey 04.
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{ 0xEB, 0xF5, 0x6F, 0x83, 0x61, 0x9E, 0xF8, 0xFA, 0xE0, 0x87, 0xD7, 0xA1, 0x4E, 0x25, 0x36, 0xEE }, // Mkey 04 encrypted with mkey 05.
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{ 0x1E, 0x1E, 0x22, 0xC0, 0x5A, 0x33, 0x3C, 0xB9, 0x0B, 0xA9, 0x03, 0x04, 0xBA, 0xDB, 0x07, 0x57 }, // Mkey 05 encrypted with mkey 06.
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{ 0xA4, 0xD4, 0x52, 0x6F, 0xD1, 0xE4, 0x36, 0xAA, 0x9F, 0xCB, 0x61, 0x27, 0x1C, 0x67, 0x65, 0x1F }, // Mkey 06 encrypted with mkey 07.
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{ 0xEA, 0x60, 0xB3, 0xEA, 0xCE, 0x8F, 0x24, 0x46, 0x7D, 0x33, 0x9C, 0xD1, 0xBC, 0x24, 0x98, 0x29 }, // Mkey 07 encrypted with mkey 08.
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{ 0x4D, 0xD9, 0x98, 0x42, 0x45, 0x0D, 0xB1, 0x3C, 0x52, 0x0C, 0x9A, 0x44, 0xBB, 0xAD, 0xAF, 0x80 }, // Mkey 08 encrypted with mkey 09.
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{ 0xB8, 0x96, 0x9E, 0x4A, 0x00, 0x0D, 0xD6, 0x28, 0xB3, 0xD1, 0xDB, 0x68, 0x5F, 0xFB, 0xE1, 0x2A }, // Mkey 09 encrypted with mkey 10.
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};
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static const u8 new_console_keyseed_4xx[KB_FIRMWARE_VERSION_MAX - KB_FIRMWARE_VERSION_400 + 1][0x10] = {
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{ 0x8B, 0x4E, 0x1C, 0x22, 0x42, 0x07, 0xC8, 0x73, 0x56, 0x94, 0x08, 0x8B, 0xCC, 0x47, 0x0F, 0x5D }, // 4.x New Device Key Source.
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{ 0x6C, 0xEF, 0xC6, 0x27, 0x8B, 0xEC, 0x8A, 0x91, 0x99, 0xAB, 0x24, 0xAC, 0x4F, 0x1C, 0x8F, 0x1C }, // 5.x New Device Key Source.
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{ 0x70, 0x08, 0x1B, 0x97, 0x44, 0x64, 0xF8, 0x91, 0x54, 0x9D, 0xC6, 0x84, 0x8F, 0x1A, 0xB2, 0xE4 }, // 6.x New Device Key Source.
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{ 0x8E, 0x09, 0x1F, 0x7A, 0xBB, 0xCA, 0x6A, 0xFB, 0xB8, 0x9B, 0xD5, 0xC1, 0x25, 0x9C, 0xA9, 0x17 }, // 6.2.0 New Device Key Source.
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{ 0x8F, 0x77, 0x5A, 0x96, 0xB0, 0x94, 0xFD, 0x8D, 0x28, 0xE4, 0x19, 0xC8, 0x16, 0x1C, 0xDB, 0x3D }, // 7.0.0 New Device Key Source.
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{ 0x67, 0x62, 0xD4, 0x8E, 0x55, 0xCF, 0xFF, 0x41, 0x31, 0x15, 0x3B, 0x24, 0x0C, 0x7C, 0x07, 0xAE }, // 8.1.0 New Device Key Source.
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{ 0x4A, 0xC3, 0x4E, 0x14, 0x8B, 0x96, 0x4A, 0xD5, 0xD4, 0x99, 0x73, 0xC4, 0x45, 0xAB, 0x8B, 0x49 }, // 9.0.0 New Device Key Source.
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{ 0x14, 0xB8, 0x74, 0x12, 0xCB, 0xBD, 0x0B, 0x8F, 0x20, 0xFB, 0x30, 0xDA, 0x27, 0xE4, 0x58, 0x94 }, // 9.1.0 New Device Key Source.
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};
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static const u8 new_console_keyseed[KB_FIRMWARE_VERSION_MAX - KB_FIRMWARE_VERSION_400 + 1][0x10] = {
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{ 0x88, 0x62, 0x34, 0x6E, 0xFA, 0xF7, 0xD8, 0x3F, 0xE1, 0x30, 0x39, 0x50, 0xF0, 0xB7, 0x5D, 0x5D }, // 4.x New Device Keygen Source.
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{ 0x06, 0x1E, 0x7B, 0xE9, 0x6D, 0x47, 0x8C, 0x77, 0xC5, 0xC8, 0xE7, 0x94, 0x9A, 0xA8, 0x5F, 0x2E }, // 5.x New Device Keygen Source.
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{ 0x99, 0xFA, 0x98, 0xBD, 0x15, 0x1C, 0x72, 0xFD, 0x7D, 0x9A, 0xD5, 0x41, 0x00, 0xFD, 0xB2, 0xEF }, // 6.x New Device Keygen Source.
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{ 0x81, 0x3C, 0x6C, 0xBF, 0x5D, 0x21, 0xDE, 0x77, 0x20, 0xD9, 0x6C, 0xE3, 0x22, 0x06, 0xAE, 0xBB }, // 6.2.0 New Device Keygen Source.
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{ 0x86, 0x61, 0xB0, 0x16, 0xFA, 0x7A, 0x9A, 0xEA, 0xF6, 0xF5, 0xBE, 0x1A, 0x13, 0x5B, 0x6D, 0x9E }, // 7.0.0 New Device Keygen Source.
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{ 0xA6, 0x81, 0x71, 0xE7, 0xB5, 0x23, 0x74, 0xB0, 0x39, 0x8C, 0xB7, 0xFF, 0xA0, 0x62, 0x9F, 0x8D }, // 8.1.0 New Device Keygen Source.
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{ 0x03, 0xE7, 0xEB, 0x43, 0x1B, 0xCF, 0x5F, 0xB5, 0xED, 0xDC, 0x97, 0xAE, 0x21, 0x8D, 0x19, 0xED }, // 9.0.0 New Device Keygen Source.
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // TODO: 9.1.0 New Device Keygen Source to be added on next change-of-keys. */
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};
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static const u8 gen_keyseed[0x10] =
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{ 0x89, 0x61, 0x5E, 0xE0, 0x5C, 0x31, 0xB6, 0x80, 0x5F, 0xE5, 0x8F, 0x3D, 0xA2, 0x4F, 0x7A, 0xA8 };
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static const u8 gen_kekseed[0x10] =
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{ 0x4D, 0x87, 0x09, 0x86, 0xC4, 0x5D, 0x20, 0x72, 0x2F, 0xBA, 0x10, 0x53, 0xDA, 0x92, 0xE8, 0xA9 };
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static const u8 gen_keyseed_retail[0x10] =
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{ 0xE2, 0xD6, 0xB8, 0x7A, 0x11, 0x9C, 0xB8, 0x80, 0xE8, 0x22, 0x88, 0x8A, 0x46, 0xFB, 0xA1, 0x95 };
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static const u8 bis_kekseed[0x10] =
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{ 0x34, 0xC1, 0xA0, 0xC4, 0x82, 0x58, 0xF8, 0xB4, 0xFA, 0x9E, 0x5E, 0x6A, 0xDA, 0xFC, 0x7E, 0x4F };
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static const u8 bis_keyseed[][0x10] = {
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{ 0xF8, 0x3F, 0x38, 0x6E, 0x2C, 0xD2, 0xCA, 0x32, 0xA8, 0x9A, 0xB9, 0xAA, 0x29, 0xBF, 0xC7, 0x48 }, // BIS 0 Crypt seed.
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{ 0x7D, 0x92, 0xB0, 0x3A, 0xA8, 0xBF, 0xDE, 0xE1, 0xA7, 0x4C, 0x3B, 0x6E, 0x35, 0xCB, 0x71, 0x06 }, // BIS 0 Tweak seed.
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{ 0x41, 0x00, 0x30, 0x49, 0xDD, 0xCC, 0xC0, 0x65, 0x64, 0x7A, 0x7E, 0xB4, 0x1E, 0xED, 0x9C, 0x5F }, // BIS 1 Crypt seed.
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{ 0x44, 0x42, 0x4E, 0xDA, 0xB4, 0x9D, 0xFC, 0xD9, 0x87, 0x77, 0x24, 0x9A, 0xDC, 0x9F, 0x7C, 0xA4 }, // BIS 1 Tweak seed.
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{ 0x52, 0xC2, 0xE9, 0xEB, 0x09, 0xE3, 0xEE, 0x29, 0x32, 0xA1, 0x0C, 0x1F, 0xB6, 0xA0, 0x92, 0x6C }, // BIS 2/3 Crypt seed.
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{ 0x4D, 0x12, 0xE1, 0x4B, 0x2A, 0x47, 0x4C, 0x1C, 0x09, 0xCB, 0x03, 0x59, 0xF0, 0x15, 0xF4, 0xE4 } // BIS 2/3 Tweak seed.
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};
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bool hos_eks_rw_try(u8 *buf, bool write)
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{
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for (u32 i = 0; i < 3; i++)
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@ -248,6 +307,90 @@ out:
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}
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}
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void hos_eks_bis_save()
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{
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bool new_eks = false;
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if (!h_cfg.eks)
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{
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h_cfg.eks = calloc(512 , 1);
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new_eks = true;
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}
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// If matching blob doesn't exist, create it.
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if (!h_cfg.eks->enabled_bis)
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{
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// Read EKS blob.
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u8 *mbr = calloc(512 , 1);
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if (!hos_eks_rw_try(mbr, false))
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{
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if (new_eks)
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{
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free(h_cfg.eks);
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h_cfg.eks = NULL;
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}
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goto out;
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}
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// Set magic and personalized info.
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h_cfg.eks->magic = HOS_EKS_MAGIC;
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h_cfg.eks->enabled_bis = 1;
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h_cfg.eks->sbk_low = FUSE(FUSE_PRIVATE_KEY0);
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// Copy new keys.
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memcpy(h_cfg.eks->bis_keys[0].crypt, bis_keys + (0 * 0x10), 0x10);
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memcpy(h_cfg.eks->bis_keys[0].tweak, bis_keys + (1 * 0x10), 0x10);
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memcpy(h_cfg.eks->bis_keys[1].crypt, bis_keys + (2 * 0x10), 0x10);
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memcpy(h_cfg.eks->bis_keys[1].tweak, bis_keys + (3 * 0x10), 0x10);
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memcpy(h_cfg.eks->bis_keys[2].crypt, bis_keys + (4 * 0x10), 0x10);
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memcpy(h_cfg.eks->bis_keys[2].tweak, bis_keys + (5 * 0x10), 0x10);
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// Encrypt EKS blob.
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u8 *eks = calloc(512 , 1);
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memcpy(eks, h_cfg.eks, sizeof(hos_eks_mbr_t));
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se_aes_crypt_ecb(14, 1, eks, sizeof(hos_eks_mbr_t), eks, sizeof(hos_eks_mbr_t));
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// Write EKS blob to SD.
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memcpy(mbr + 0x60, eks, sizeof(hos_eks_mbr_t));
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hos_eks_rw_try(mbr, true);
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free(eks);
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out:
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free(mbr);
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}
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}
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void hos_eks_bis_clear()
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{
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// Check if BIS keys are enabled.
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if (h_cfg.eks && h_cfg.eks->enabled_bis)
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{
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// Read EKS blob.
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u8 *mbr = calloc(512 , 1);
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if (!hos_eks_rw_try(mbr, false))
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goto out;
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// Disable BIS storage.
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h_cfg.eks->enabled_bis = 0;
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// Encrypt EKS blob.
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u8 *eks = calloc(512 , 1);
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memcpy(eks, h_cfg.eks, sizeof(hos_eks_mbr_t));
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se_aes_crypt_ecb(14, 1, eks, sizeof(hos_eks_mbr_t), eks, sizeof(hos_eks_mbr_t));
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// Write EKS blob to SD.
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memcpy(mbr + 0x60, eks, sizeof(hos_eks_mbr_t));
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hos_eks_rw_try(mbr, true);
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free(eks);
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out:
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free(mbr);
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}
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}
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int hos_keygen(u8 *keyblob, u32 kb, tsec_ctxt_t *tsec_ctxt)
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{
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u8 tmp[0x30];
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@ -392,3 +535,155 @@ int hos_keygen(u8 *keyblob, u32 kb, tsec_ctxt_t *tsec_ctxt)
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return 1;
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}
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static void _hos_validate_sept_mkey(u32 kb)
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{
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u8 tmp_mkey[0x10];
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u32 mkey_idx = sizeof(mkey_vectors) / 0x10;
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u8 mkey_slot = !h_cfg.aes_slots_new ? 12 : 13;
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do
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{
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mkey_idx--;
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se_aes_crypt_ecb(mkey_slot, 0, tmp_mkey, 0x10, mkey_vectors[mkey_idx], 0x10);
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for (u32 idx = 0; idx < mkey_idx; idx++)
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{
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se_aes_key_clear(2);
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se_aes_key_set(2, tmp_mkey, 0x10);
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se_aes_crypt_ecb(2, 0, tmp_mkey, 0x10, mkey_vectors[mkey_idx - 1 - idx], 0x10);
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}
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if (!memcmp(tmp_mkey, "\x00\x00\x00\x00\x00\x00\x00\x00", 8))
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{
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se_aes_key_clear(2);
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hos_eks_save(kb);
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return;
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}
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} while (mkey_idx);
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se_aes_key_clear(2);
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hos_eks_clear(kb);
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}
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int hos_bis_keygen(u8 *keyblob, u32 kb, tsec_ctxt_t *tsec_ctxt)
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{
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u32 keygen_rev = 0;
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u32 console_key_slot = kb >= KB_FIRMWARE_VERSION_400 ? 15 : 13;
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if (!bis_keys)
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bis_keys = malloc(0x10 * 6);
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if (!h_cfg.eks || !h_cfg.eks->enabled_bis)
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{
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///////// check sept.
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hos_keygen(keyblob, kb, tsec_ctxt);
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if (kb >= KB_FIRMWARE_VERSION_400)
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keygen_rev = fuse_read_odm_keygen_rev();
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if (keygen_rev)
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{
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// Keygen revision uses bootloader version, which starts from 1.
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keygen_rev -= (KB_FIRMWARE_VERSION_400 + 1);
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// Derive mkey 0.
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u8 tmp_mkey[0x10];
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u32 mkey_idx = sizeof(mkey_vectors) / 0x10;
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u8 mkey_slot = kb >= KB_FIRMWARE_VERSION_700 ? (!h_cfg.aes_slots_new ? 12 : 13) : (kb == KB_FIRMWARE_VERSION_620 ? 9 : 12);
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do
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{
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mkey_idx--;
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se_aes_crypt_ecb(mkey_slot, 0, tmp_mkey, 0x10, mkey_vectors[mkey_idx], 0x10);
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for (u32 idx = 0; idx < mkey_idx; idx++)
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{
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se_aes_key_clear(2);
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se_aes_key_set(2, tmp_mkey, 0x10);
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se_aes_crypt_ecb(2, 0, tmp_mkey, 0x10, mkey_vectors[mkey_idx - 1 - idx], 0x10);
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}
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} while (memcmp(tmp_mkey, "\x00\x00\x00\x00\x00\x00\x00\x00", 8) != 0 && mkey_idx);
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// Derive new device key.
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se_aes_key_clear(1);
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se_aes_unwrap_key(1, 10, new_console_keyseed_4xx[keygen_rev]); // Uses Device key 4x.
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se_aes_crypt_ecb(10, 0, tmp_mkey, 0x10, new_console_keyseed_4xx[keygen_rev], 0x10); // Uses Device key 4x.
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se_aes_unwrap_key(1, 2, new_console_keyseed[keygen_rev]); // Uses Master Key 0.
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se_aes_unwrap_key(1, 1, tmp_mkey);
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console_key_slot = 1;
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}
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// Generate generic kek.
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se_aes_key_clear(2);
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se_aes_unwrap_key(2, console_key_slot, gen_keyseed_retail);
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// Clear bis keys storage.
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memset(bis_keys, 0, 0x10 * 6);
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// Generate BIS 0 Keys.
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se_aes_crypt_block_ecb(2, 0, bis_keys + (0 * 0x10), bis_keyseed[0]);
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se_aes_crypt_block_ecb(2, 0, bis_keys + (1 * 0x10), bis_keyseed[1]);
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// Generate generic kek.
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se_aes_key_clear(2);
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se_aes_unwrap_key(2, console_key_slot, gen_kekseed);
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se_aes_unwrap_key(2, 2, bis_kekseed);
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se_aes_unwrap_key(2, 2, gen_keyseed);
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// Generate BIS 1 Keys.
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se_aes_crypt_block_ecb(2, 0, bis_keys + (2 * 0x10), bis_keyseed[2]);
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se_aes_crypt_block_ecb(2, 0, bis_keys + (3 * 0x10), bis_keyseed[3]);
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// Generate BIS 2/3 Keys.
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se_aes_crypt_block_ecb(2, 0, bis_keys + (4 * 0x10), bis_keyseed[4]);
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se_aes_crypt_block_ecb(2, 0, bis_keys + (5 * 0x10), bis_keyseed[5]);
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}
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else
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{
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memcpy(bis_keys + (0 * 0x10), h_cfg.eks->bis_keys[0].crypt, 0x10);
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memcpy(bis_keys + (1 * 0x10), h_cfg.eks->bis_keys[0].tweak, 0x10);
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memcpy(bis_keys + (2 * 0x10), h_cfg.eks->bis_keys[1].crypt, 0x10);
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memcpy(bis_keys + (3 * 0x10), h_cfg.eks->bis_keys[1].tweak, 0x10);
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memcpy(bis_keys + (4 * 0x10), h_cfg.eks->bis_keys[2].crypt, 0x10);
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memcpy(bis_keys + (5 * 0x10), h_cfg.eks->bis_keys[2].tweak, 0x10);
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}
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if (kb >= KB_FIRMWARE_VERSION_700)
|
||||
_hos_validate_sept_mkey(kb);
|
||||
|
||||
// Clear all AES keyslots.
|
||||
for (u32 i = 0; i < 6; i++)
|
||||
se_aes_key_clear(i);
|
||||
|
||||
// Set BIS keys.
|
||||
se_aes_key_set(0, bis_keys + (0 * 0x10), 0x10);
|
||||
se_aes_key_set(1, bis_keys + (1 * 0x10), 0x10);
|
||||
|
||||
se_aes_key_set(2, bis_keys + (2 * 0x10), 0x10);
|
||||
se_aes_key_set(3, bis_keys + (3 * 0x10), 0x10);
|
||||
|
||||
se_aes_key_set(4, bis_keys + (4 * 0x10), 0x10);
|
||||
se_aes_key_set(5, bis_keys + (5 * 0x10), 0x10);
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
void hos_bis_keys_clear()
|
||||
{
|
||||
// Clear all aes keyslots.
|
||||
for (u32 i = 0; i < 6; i++)
|
||||
se_aes_key_clear(i);
|
||||
|
||||
// Set SBK back.
|
||||
u32 sbk[4] = {
|
||||
FUSE(FUSE_PRIVATE_KEY0),
|
||||
FUSE(FUSE_PRIVATE_KEY1),
|
||||
FUSE(FUSE_PRIVATE_KEY2),
|
||||
FUSE(FUSE_PRIVATE_KEY3)
|
||||
};
|
||||
// Set SBK to slot 14.
|
||||
se_aes_key_set(14, sbk, 0x10);
|
||||
|
||||
// Lock SBK from being read.
|
||||
se_key_acc_ctrl(14, SE_KEY_TBL_DIS_KEYREAD_FLAG);
|
||||
}
|
||||
|
|
@ -96,6 +96,10 @@ typedef struct _launch_ctxt_t
|
|||
void hos_eks_get();
|
||||
void hos_eks_save(u32 kb);
|
||||
void hos_eks_clear(u32 kb);
|
||||
void hos_eks_bis_save();
|
||||
void hos_eks_bis_clear();
|
||||
int hos_keygen(u8 *keyblob, u32 kb, tsec_ctxt_t *tsec_ctxt);
|
||||
int hos_bis_keygen(u8 *keyblob, u32 kb, tsec_ctxt_t *tsec_ctxt);
|
||||
void hos_bis_keys_clear();
|
||||
|
||||
#endif
|
||||
|
|
|
|||
Loading…
Reference in a new issue