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* docs: #2840

* docs: #2840
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maduvena committed Nov 3, 2022
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234 changes: 232 additions & 2 deletions docs/admin/fido/vendor-metadata.md
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---
tags:
- administration
- fido
- fido2
- metadata Service
- attestation
---

This page will be the landing page for the Janssen Project admin documentation
### Metadata Service:

The metadata service is a centralized, trusted database of FIDO authenticators. It is used by the Relying Party to validate authenticators i.e. attest the genuine-ness of a device. If implemented in organizations like government, federal agencies, banking and healthcare organizations for example) and/or organizations handling sensitive data (media companies, R&D institutions, corporations, etc), this information can help protect organizations against security vulnerabilities.

### 1. Local metadata service:
Janssen's FIDO server has a [configuration parameter](./config.md) called `serverMetadataFolder` which by default points to a directory location `/etc/jans/conf/fido2/server_metadata` where the administrator can (obtain from a vendor and ) place authenticator metadata in json format.

Example of authenticator metadata:
```
{
"aaguid": "83c44309-....-8be444b573cb",
"metadataStatement": {
"legalHeader": "Submission of this statement and retrieval and use of this statement indicates acceptance of the appropriate agreement located at https://fidoalliance.org/metadata/metadata-legal-terms/.",
"aaguid": "83c44309-....-8be444b573cb",
"description": "Just an example",
"authenticatorVersion": 448962,
"protocolFamily": "fido2",
"schema": 3,
"upv": [
{
"major": 1,
"minor": 0
},
{
"major": 1,
"minor": 1
}
],
"authenticationAlgorithms": [
"ed25519_eddsa_sha512_raw",
"secp256r1_ecdsa_sha256_raw"
],
"publicKeyAlgAndEncodings": [
"cose"
],
"attestationTypes": [
"basic_full"
],
"userVerificationDetails": [
[
{
"userVerificationMethod": "passcode_external",
"caDesc": {
"base": 64,
"minLength": 4,
"maxRetries": 8,
"blockSlowdown": 0
}
},
{
"userVerificationMethod": "presence_internal"
}
],
[
{
"userVerificationMethod": "passcode_external",
"caDesc": {
"base": 64,
"minLength": 4,
"maxRetries": 8,
"blockSlowdown": 0
}
}
],
[
{
"userVerificationMethod": "fingerprint_internal",
"baDesc": {
"selfAttestedFRR": 0,
"selfAttestedFAR": 0,
"maxTemplates": 5,
"maxRetries": 5,
"blockSlowdown": 0
}
},
{
"userVerificationMethod": "presence_internal"
}
],
[
{
"userVerificationMethod": "none"
}
],
[
{
"userVerificationMethod": "fingerprint_internal",
"baDesc": {
"selfAttestedFRR": 0,
"selfAttestedFAR": 0,
"maxTemplates": 5,
"maxRetries": 5,
"blockSlowdown": 0
}
}
],
[
{
"userVerificationMethod": "presence_internal"
}
]
],
"keyProtection": [
"hardware",
"secure_element"
],
"matcherProtection": [
"on_chip"
],
"cryptoStrength": 128,
"attachmentHint": [
"external",
"wired"
],
"tcDisplay": [],
"attestationRootCertificates": [
"MII....psmyPzK+Vsgw2jeRQ5JlKDyqE0hebfC1tvFu0CCrJFcw=="
],
"icon": "data:image/png;base64,iVBORw0KGgoAAAA....k5+36hF7vXAAAAAElFTkSuQmCC",
"authenticatorGetInfo": {
"versions": [
"FIDO_2_0",
"FIDO_2_1_PRE",
"FIDO_2_1"
],
"extensions": [
"credProtect",
"hmac-secret",
"largeBlobKey",
"credBlob",
"minPinLength"
],
"aaguid": "83c.....73cb",
"options": {
"plat": false,
"rk": true,
"clientPin": true,
"up": true,
"uv": false,
"pinUvAuthToken": true,
"largeBlobs": true,
"ep": false,
"bioEnroll": false,
"userVerificationMgmtPreview": false,
"authnrCfg": true,
"credMgmt": true,
"credentialMgmtPreview": true,
"setMinPINLength": true,
"makeCredUvNotRqd": false,
"alwaysUv": true
},
"maxMsgSize": 1200,
"pinUvAuthProtocols": [
2,
1
],
"maxCredentialCountInList": 8,
"maxCredentialIdLength": 128,
"transports": [
"usb"
],
"algorithms": [
{
"type": "public-key",
"alg": -7
},
{
"type": "public-key",
"alg": -8
}
],
"maxSerializedLargeBlobArray": 1024,
"forcePINChange": false,
"minPINLength": 4,
"firmwareVersion": 328965,
"maxCredBlobLength": 32,
"maxRPIDsForSetMinPINLength": 1,
"preferredPlatformUvAttempts": 3,
"uvModality": 2,
"remainingDiscoverableCredentials": 25
}
},
"statusReports": [
{
"status": "FIDO_CERTIFIED_L1",
"effectiveDate": "2021-08-06",
"url": "www.yubico.com",
"certificationDescriptor": "An example",
"certificateNumber": "FIDO2.....001",
"certificationPolicyVersion": "1.3",
"certificationRequirementsVersion": "1.4"
},
{
"status": "FIDO_CERTIFIED",
"effectiveDate": "2021-08-06"
}
],
"timeOfLastStatusChange": "2021-08-16"
}
```


### 2. Metadata service for authenticators approved by [FIDO Alliance (MDS3)](https://fidoalliance.org/metadata/)

Metadata entries for trusted authenticators registered with FIDO Alliance can be found on - https://fidoalliance.org/certification/fido-certified-products/

![Metadata](../../assets/fido2_metadata.png)

Draw.io reference for image:
```
<?xml version="1.0" encoding="UTF-8"?>
<mxfile host="app.diagrams.net" modified="2022-11-03T13:17:35.619Z" agent="5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/106.0.0.0 Safari/537.36 Edg/106.0.1370.52" etag="MPAHjBuOoBSpVro-BGSI" version="20.5.1" type="google"><diagram id="An1oD0C01MiJfx2t8ul6" name="Page-1">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</diagram></mxfile>
```

Janssen's FIDO2 server -

1. Downloads, verifies and caches metadata BLOBs from the FIDO Metadata Service.
1. Re-downloads the metadata BLOB when it expires.
1. Provides trust root certificates for verifying attestation statements during credential registrations.



### 3. Skip metadata validation
Metadata validation is recommended but not mandatory as per FIDO2 specifications. As per the current implementation, there is no provision in the jans-fido2 server to turn this feature off. However, the intention is to implement it in the future.


### References:

1. https://fidoalliance.org/announcing-the-new-streamlined-and-simplified-metadata-service-for-authenticator-vendors-and-customers/
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