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On 29/11/14 19:53, Mick wrote: |
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> I'm looking to buy a new PC and while looking at FM2+ MoBos I saw ASUS offers |
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> one with a TPM feature. It also sells it as a separate component it seems: |
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> |
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> http://us.estore.asus.com/index.php?l=product_detail&p=5793 |
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> |
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> I recall reading in this list about it, but I am not sure if it offers any |
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> benefits to me as a user, or just adds a layer of complexity without any |
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> substantial benefit. |
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> |
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> Your views and experience with this TPM thingy? |
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> |
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one thing that is very useful is using tpm to feed random number generator |
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$ time dd if=/dev/random of=/dev/null bs=1 count=100 |
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100+0 records in |
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100+0 records out |
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100 bytes (100 B) copied, 26.7494 s, 0.0 kB/s |
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real 0m26.751s |
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user 0m0.000s |
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sys 0m0.001s |
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after starting trousers and rngd is much much much faster for real(er) |
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random |
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$ time dd if=/dev/random of=/dev/null bs=1 count=100 |
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100+0 records in |
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100+0 records out |
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100 bytes (100 B) copied, 0.000275625 s, 363 kB/s |
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real 0m0.001s |
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user 0m0.002s |
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sys 0m0.000s |
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it's also a safer place to drop keys into for example for use with grub |
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trustedgrub and basically does "secureboot" without the need for uefi |
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you can also use it to encrypt/decrypt *if* you trust it is not backdoored |
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but does mean you can use it for LUKS instead of say a GPG crypted pass |
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file - or you can have the tpm crypt your password into gibberish and |
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then that gibberish phrase is the real password for LUKS |
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