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[[Category:OtherOS]]
=Introduction=
=Introduction=


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=ATA and ENCDEC Keys=
=ATA and ENCDEC Keys=


''Main Article [[HDD Encryption]]''
See http://www.ps3devwiki.com/wiki/HDD_Encryption


=Device Mapper=
=Device Mapper=
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</pre>
</pre>


==dm-crypt==
==dm-crypto==


* We don't need xts_aes application anymore.
* We don't need xts_aes application anymore.
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* Implemented PS3 partition support in Linux kernel. See patch '''0035-ps3-partition.patch''' here http://gitorious.ps3dev.net/ps3linux/kernel-patches-35
* Implemented PS3 partition support in Linux kernel. See patch '''0035-ps3-partition.patch''' here http://gitorious.ps3dev.net/ps3linux/kernel-patches-35
* Use kpartx tool to reread partition table.
* Use kpartx tool to reread partition table.
==Structure==
<pre>
#define MAX_ACL_ENTRIES 8
#define MAX_PARTITIONS 8
#define MAGIC1 0x0FACE0FFULL
#define MAGIC2 0xDEADFACEULL
struct p_acl_entry {
u64 laid;
u64 rights;
};
struct d_partition {
u64 p_start;
u64 p_size;
struct p_acl_entry p_acl[MAX_ACL_ENTRIES];
};
struct disklabel {
u8 d_res1[16];
u64 d_magic1;
u64 d_magic2;
u64 d_res2;
u64 d_res3;
struct d_partition d_partitions[MAX_PARTITIONS];
u8 d_pad[0x600 - MAX_PARTITIONS * sizeof(struct d_partition)- 0x30];
};
</pre>


==kpartx==
==kpartx==
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* We need a patch which adds PS3 partition table support.
* We need a patch which adds PS3 partition table support.
* Official GIT repo: http://git.opensvc.com/multipath-tools/.git
* Official GIT repo: http://git.opensvc.com/multipath-tools/.git
* '''PS3 partition table support is upstream now, you don't have to patch it anymore !!!'''


===Patching and Building===
===Patching and Building===
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=Making Changes to cell_ext_os_area VFLASH Region=
=Making Changes to cell_ext_os_area VFLASH Region=


* Here is one of the use cases for your dumped HDD and VFLASH keys.
* It's the VFLASH region where petitboot is stored.
* It's the VFLASH region where petitboot is stored.
* Useful for OtherOS++ users.
* Useful for OtherOS++ users.
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# it begins at offset 0xe740200
# it begins at offset 0xe740200


dd if=/dev/mapper/hdd_crypt1 of=params.bin bs=1 count=512 skip=$((0xe740200))
dd if=/dev/mapper/hdd_crypt1 of=params.bin bs=1 count=512 skip=$((0x0xe740200))


# now clear the boot flag
# now clear the boot flag
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# now we write it back
# now we write it back


dd of=/dev/mapper/hdd_crypt1 if=params.bin bs=1 count=512 seek=$((0xe740200))
dd of=/dev/mapper/hdd_crypt1 if=params.bin bs=1 count=512 seek=$((0x0xe740200))


sync
sync
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# now GameOS should boot and you can flash a new petitboot :)
# now GameOS should boot and you can flash a new petitboot :)
# you also could write new petitboot image to VFLASH :)
</pre>
</pre>


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* http://backreference.org/2010/09/25/access-partitions-in-non-disk-block-devices-with-kpartx/
* http://backreference.org/2010/09/25/access-partitions-in-non-disk-block-devices-with-kpartx/
* https://www.dan.me.uk/blog/2012/05/05/full-disk-encryption-in-freebsd-9-x-well-almost/
* https://www.dan.me.uk/blog/2012/05/05/full-disk-encryption-in-freebsd-9-x-well-almost/
{{Linux}}<noinclude>[[Category:Main]]</noinclude>
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