Security notes / Unsorted

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Security related stuff.

Practical


Theory / unsorted

how to do a login system badly
how to do encryption badly
Disk and file encryption notes
  • unsorted
This article/section is a stub — probably a pile of half-sorted notes, is not well-checked so may have incorrect bits. (Feel free to ignore, fix, or tell me)


TPM

This article/section is a stub — probably a pile of half-sorted notes, is not well-checked so may have incorrect bits. (Feel free to ignore, fix, or tell me)

What?

Trusted Platform Module, TPM, is a hardware component, and part of the Trusted Computing design.

The TPM is the hardware part of that, a module that can be plugged into PC motherboards and laptops, and may be built into laptops (fairly common in business laptops).


"Can't detect TPM device"

Means the BIOS knows that you can plug in a TPM module, and is looking for it (being told to or always does), and doesn't find one.

Either tell it not to look for one (if you can), plug one in, or ignore this message. It's often under a header named something like 'Trusted Computing'

Some BIOSes will always look for it(verify), in which case you can just ignore the message.


More acronyms

What does TPM not protect?

Use and criticism, strengths and weaknesses

This article/section is a stub — probably a pile of half-sorted notes, is not well-checked so may have incorrect bits. (Feel free to ignore, fix, or tell me)

See also

Nonce

Challenge/response

JSON Web Signature, Encryption, Tokens

This article/section is a stub — probably a pile of half-sorted notes, is not well-checked so may have incorrect bits. (Feel free to ignore, fix, or tell me)

JSON Web Signature (JWS)

Signing arbitrary data.

See also:


JSON Web Encryption (JWE)

Syntax for the exchange of encrypted data, and sending it in Base64 within JSON.

See also:


JSON Web Tokens (JWT)

JWT is aimed at sending verifiable claims, building on JWS or JWE

Signed using a shared secret, or a public/private key.

Typically used between identity provider and a service provider, in an SSO-like way.

See also:


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