Difference between revisions of "Attested"
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* When a secure operation is performed at a user location, the packet returned from that [[User Device]] needs to be trusted by the [[Site]] that receives it. | * When a secure operation is performed at a user location, the packet returned from that [[User Device]] needs to be trusted by the [[Site]] that receives it. | ||
| − | * The signing key for that packet will have a certificate that binds that signing key to a particular device. | + | * The signing key for that packet from a [[User Device]] will have a certificate that binds that signing key to a particular device. |
* If the device reports a serial number, or (equivalently) a public key that is unique that that device, that can be used as a tracking number for the owner of the device. | * If the device reports a serial number, or (equivalently) a public key that is unique that that device, that can be used as a tracking number for the owner of the device. | ||
Revision as of 18:25, 31 August 2018
Full Title or Meme
A statement is Attested if some Trusted Third Party can create a Validated Claim about a User Device used during either Authentication or Authorization.
Context
- The Context in which an Attestation of Security applies is typically during the Validation of the security protection provided to User secrets (such as Credentials) on a User Device.
Problems
- When a secure operation is performed at a user location, the packet returned from that User Device needs to be trusted by the Site that receives it.
- The signing key for that packet from a User Device will have a certificate that binds that signing key to a particular device.
- If the device reports a serial number, or (equivalently) a public key that is unique that that device, that can be used as a tracking number for the owner of the device.
Solution
- The certificate for the signing key from the User Device, and potentially the configuration information from the device, will need to be Attested by some Trusted Third Party.
- Attestation can be complex for programmable computers, or simple for one function User Devices like Security Tokens.
- An example of a single attestation program with associated metadata is described in the FIDO web site.
- When a simple certificate is used, it typically is accompanied by a metadata statement, an example is this one at Yubico.
References
- Synonyms include: Assured Corroborated Validated.
