FIDO Convenience Metadata Service

Proposed Standard,

This version:
http://fidoalliance.org/specs/mds/fido-convenience-metadata-service-v1.0-ps-20250521.html
Issue Tracking:
GitHub
Editors:
(Yubico)
(Nok Nok Labs)

Copyright © 2025 FIDO Alliance. All Rights Reserved.

Abstract

FIDO Metadata Service providing convenience centric information about authenticators, like friendly names and icons. For security related aspects, look at the FIDO Metadata Service [FIDOMetadataService].

Status of This Document

This section describes the status of this document at the time of its publication. Other documents may supersede this document. A list of current FIDO Alliance publications and the latest revision of this technical report can be found in the FIDO Alliance specifications index at https://www.fidoalliance.org/specifications/.

This document was published by the FIDO Alliance as a Proposed Standard Specification. If you wish to make comments regarding this document, please Contact Us. All comments are welcome.

Implementation of certain elements of this Specification may require licenses under third party intellectual property rights, including without limitation, patent rights. The FIDO Alliance, Inc. and its Members and any other contributors to the Specification are not, and shall not be held, responsible in any manner for identifying or failing to identify any or all such third party intellectual property rights.

THIS FIDO ALLIANCE SPECIFICATION IS PROVIDED “AS IS” AND WITHOUT ANY WARRANTY OF ANY KIND, INCLUDING, WITHOUT LIMITATION, ANY EXPRESS OR IMPLIED WARRANTY OF NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

1. Notation

Type names, attribute names and element names are written as code

String literals are enclosed in “”, e.g. “iconLight”.

In formulas we use “|” to denote byte wise concatenation operations.

The notation base64url(byte[8..64]) reads as 8-64 bytes of data encoded in base64url, "Base 64 Encoding with URL and Filename Safe Alphabet" [RFC4648] without padding.

Following [WebIDL-ED], dictionary members are optional unless they are explicitly marked as required.

WebIDL dictionary members MUST NOT have a value of null.

Unless otherwise specified, if a WebIDL dictionary member is DOMString, it MUST NOT be empty.

Unless otherwise specified, if a WebIDL dictionary member is a List, it MUST NOT be an empty list.

For definitions of terms, please refer to the FIDO Glossary [FIDOGlossary].

All diagrams, examples, notes in this specification are non-normative.

Note: Certain dictionary members need to be present in order to comply with FIDO requirements. Such members are marked in the WebIDL definitions found in this document, as required. The keyword required has been introduced by [WebIDL-ED], which is a work-in-progress. If you are using a WebIDL parser which implements [WebIDL], then you may remove the keyword required from your WebIDL and use other means to ensure those fields are present.

1.1. Key Words

The key words “MUST”, “MUST NOT”, “REQUIRED”, “SHALL”, “SHALL NOT”, “SHOULD”, “SHOULD NOT”, “RECOMMENDED”, “MAY”, and “OPTIONAL” in this document are to be interpreted as described in [RFC2119].

2. Overview

This section is not normative.

This document specifies how convenience related details about authenticators can be retrieved.

These details can be used when showing existing credentials to the user.

For security related information about authenticators, look at the FIDO Metadata Service [FIDOMetadataService].

All details provided by the Convenience Metadata Service are also included in the FIDO Metadata Service [FIDOMetadataService].

3. Convenience Metadata Service Details

This section is normative.

The details about authenticators as provided by this service originates from the authenticator vendors and hence provides a good way to consistently describe those authenticators across relying parties.

3.1. Convenience Metadata Format

3.1.1. FriendlyNames dictionary

This descriptor contains friendly names (e.g., public trade name) of the authenticator in multiple languages.

dictionary FriendlyNames {
    DOMString *IETFLanguageCodes-members...;
};
*IETFLanguageCodes-members...

IETF language codes ([RFC5646]), defined by a primary language subtag, followed by a region subtag based on a two-letter country code from [ISO3166] alpha-2 (usually written in upper case), e.g: Austrian-German - "de-AT". In case of absence of the specific territorial language definition, vendor should fallback to the more general language option, e.g: If "de" is given, but "de-AT" is missing, the use "de" entry instead. Description values can contain any UTF-8 characters.

For example:

{
  "en-US": "FIDO Sample Security Key"
}

Each entry SHOULD NOT exceed a maximum length of 63 characters to ensure proper display.

3.1.2. ConvenienceDetails dictionary

dictionary ConvenienceDetails {
  FriendlyNames friendlyNames;
  DOMString     icon;
  DOMString     iconDark;
  DOMString     providerLogoLight;
  DOMString     providerLogoDark;
};
friendlyNames, of type FriendlyNames

A human-readable friendly name of the authenticator / passkey provider in multiple languages. The name is intended to be shown to end users. A name in English language ("en-US") is mandatory, localized names for other languages are optional.

icon, of type DOMString

A data: url [RFC2397] encoded [PNG] or [SVG11] (light mode) icon for the Authenticator (e.g., depicting the security key). This icon is intended to be shown to users by RPs. Use of [SVG11] format is mandatory if any of the iconDark, providerLogoLight and/or providerLogoDark is used in addition to icon. Use of [SVG11] is recommended if only icon is used. The icon is more specific than the provider logo and should be shown if present.

iconDark, of type DOMString

A data: url [RFC2397] encoded [SVG11] dark mode icon for the Authenticator (e.g., depicting the security key). This icon is intended to be shown to users by RPs. The icon is more specific than the provider logo and should be shown if present.

providerLogoLight, of type DOMString

A data: url [RFC2397] encoded [SVG11] light mode icon for the provider (e.g., logomark of the passkey provider). The SVG MUST meet all of the requirements defined in § 4 SVG requirements. This icon is intended to be shown to users by RPs.

providerLogoDark, of type DOMString

A data: url [RFC2397] encoded [SVG11] dark mode icon for the provider (e.g., logomark of the passkey provider). The SVG MUST meet all of the requirements defined in § 4 SVG requirements. This icon is intended to be shown to users by RPs.

3.1.3. Convenience Metadata Payload Entry dictionary

Represents the ConvenienceMetadataPayload

dictionary ConvenienceMetadataPayload {
    required Number    no;
    DOMString *AAGUIDandConvenienceDetails...;
};
no

The serial number of this Metadata BLOB Payload. This serial number MUST be incremented whenever the contents of the Convenience Metadata Payload BLOB or the full Metadata Payload BLOB [FIDOMetadataService] changes. Serial numbers MUST be consecutive and strictly monotonic, i.e. the successor BLOB will have a no value exactly incremented by one.

*AAGUIDandConvenienceDetails...

Authenticator AAGUID followed by the ConvenienceDetails.

{
    "no": 85,
    "ea9b8d66-4d01-1d21-3ce4-b6b48cb575d4": {
        "friendlyNames": {"en-US": "Google Password Manager"},
        "providerLogoDark": "data:image/svg+xml;base64,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",
        "providerLogoLight": "data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz48c3ZnIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgaGVpZ2h0PSIyNHB4IiB2aWV3Qm94PSIwIDAgMTkyIDE5MiIgd2lkdGg9IjI0cHgiIHZlcnNpb249IjEuMiIgYmFzZVByb2ZpbGU9InRpbnktcHMiPjx0aXRsZT5Hb29nbGUgUGFzc3dvcmQgTWFuYWdlcjwvdGl0bGU+PHJlY3QgZmlsbD0ibm9uZSIgaGVpZ2h0PSIxOTIiIHdpZHRoPSIxOTIiIHk9IjAiPjwvcmVjdD48Zz48cGF0aCBkPSJNNjkuMjksMTA2Yy0zLjQ2LDUuOTctOS45MSwxMC0xNy4yOSwxMGMtMTEuMDMsMC0yMC04Ljk3LTIwLTIwczguOTctMjAsMjAtMjAgYzcuMzgsMCwxMy44Myw0LjAzLDE3LjI5LDEwaDI1LjU1QzkwLjMsNjYuNTQsNzIuODIsNTIsNTIsNTJDMjcuNzQsNTIsOCw3MS43NCw4LDk2czE5Ljc0LDQ0LDQ0LDQ0YzIwLjgyLDAsMzguMy0xNC41NCw0Mi44NC0zNCBINjkuMjl6IiBmaWxsPSIjNDI4NUY0Ij48L3BhdGg+PHJlY3QgZmlsbD0iI0ZCQkMwNCIgaGVpZ2h0PSIyNCIgd2lkdGg9IjQ0IiB4PSI5NCIgeT0iODQiPjwvcmVjdD48cGF0aCBkPSJNOTQuMzIsODRINjh2MC4wNWMyLjUsMy4zNCw0LDcuNDcsNCwxMS45NXMtMS41LDguNjEtNCwxMS45NVYxMDhoMjYuMzIgYzEuMDgtMy44MiwxLjY4LTcuODQsMS42OC0xMlM5NS40MSw4Ny44Miw5NC4zMiw4NHoiIGZpbGw9IiNFQTQzMzUiPjwvcGF0aD48cGF0aCBkPSJNMTg0LDEwNnYyNmgtMTZ2LThjMC00LjQyLTMuNTgtOC04LThzLTgsMy41OC04LDh2OGgtMTZ2LTI2SDE4NHoiIGZpbGw9IiMzNEE4NTMiPjwvcGF0aD48cmVjdCBmaWxsPSIjMTg4MDM4IiBoZWlnaHQ9IjI0IiB3aWR0aD0iNDgiIHg9IjEzNiIgeT0iODQiPjwvcmVjdD48L2c+PC9zdmc+"
    },
    "08987058-cadc-4b81-b6e1-30de50dcbe96": {
        "friendlyNames": {"en-US": "Windows Hello"},
        "providerLogoDark": "data:image/svg+xml;base64,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",
        "providerLogoLight": "data:image/svg+xml;base64,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"
    },
   "a25342c0-3cdc-4414-8e46-f4807fca511c": {
       "friendlyNames": {"en-US": "YubiKey 5 Series with NFC", "ja-Hani-JP": "YubiKey 5 シリーズ (NFC 搭載)"},
       "icon": "data:image/png;base64,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"
   }
}

3.2. Metadata BLOB object processing rules

The FIDO Server SHOULD follow these processing rules:
  1. Download and cache the Convenience Metadata BLOB from the Convenience MDS root location "c-mds.fidoalliance.org". More information can be found at https://fidoalliance.org/metadata/

    The system may pass the serial number of the latest cached Convenience Metadata Service BLOB to the service (GET /?localCopySerial=77). In that case, the MDS will return HTTP code 304 (Not Modified) if no newer MDS blob is available. Alternatively, the serial number of the local copy could be provided through the "If-None-Match" header field. The server will always return the serial number in the ETag header field. If both, the "localCopySerial" parameter and the "If-None-Match" header are provided, the server will only process the "localCopySerial" parameter.

4. SVG requirements

This section is normative.

All [SVG11] provider icons MUST adhere to the SVG Portable/Secure (SVG-P/S) profile defined in https://datatracker.ietf.org/doc/draft-svg-tiny-ps-abrotman/09/.

Additional requirements:

  1. Format: SVG Version: 1.2 with baseProfile as “tiny-ps"
  2. Elements: vector-based (cannot contain raster components)
  3. Dimensions: square aspect ratio
  4. The <title> element MUST be populated with the English version of the provider friendly name
  5. The SVG MUST not contain comments or extra text

5. Considerations

This section is not normative.

This section describes the key considerations for designing this metadata service.

Index

Terms defined by this specification

Terms defined by reference

References

Normative References

[PNG]
Chris Lilley; et al. Portable Network Graphics (PNG) Specification (Third Edition). URL: https://w3c.github.io/png/
[RFC2397]
L. Masinter. The "data" URL scheme. August 1998. Proposed Standard. URL: https://www.rfc-editor.org/rfc/rfc2397
[RFC4648]
S. Josefsson. The Base16, Base32, and Base64 Data Encodings (RFC 4648). October 2006. URL: http://www.ietf.org/rfc/rfc4648.txt
[SVG11]
Erik Dahlström; et al. Scalable Vector Graphics (SVG) 1.1 (Second Edition). 16 August 2011. REC. URL: https://www.w3.org/TR/SVG11/
[WebIDL]
Edgar Chen; Timothy Gu. Web IDL Standard. Living Standard. URL: https://webidl.spec.whatwg.org/
[WebIDL-ED]
Cameron McCormack. Web IDL. 13 November 2014. Editor's Draft. URL: http://heycam.github.io/webidl/

Informative References

[FIDOGlossary]
R. Lindemann; et al. FIDO Technical Glossary. 23 May 2022. Proposed Standard. URL: https://fidoalliance.org/specs/common-specs/fido-glossary-v2.1-ps-20220523.html
[FIDOMetadataService]
B. Jack; R. Lindemann; Y. Ackermann. FIDO Metadata Service. 21 May 2025. Proposed Standard. URL: https://fidoalliance.org/specs/mds/fido-metadata-service-v3.1-ps-20250521.html
[ISO3166]
Codes for the representation of names of countries and their subdivisions — Part 1: Country code. August 2020. Published. URL: https://www.iso.org/standard/72482.html
[RFC2119]
S. Bradner. Key words for use in RFCs to Indicate Requirement Levels. March 1997. Best Current Practice. URL: https://tools.ietf.org/html/rfc2119
[RFC5646]
A. Phillips, Ed.; M. Davis, Ed.. Tags for Identifying Languages. September 2009. Best Current Practice. URL: https://www.rfc-editor.org/rfc/rfc5646

IDL Index

dictionary ConvenienceDetails {
  FriendlyNames friendlyNames;
  DOMString     icon;
  DOMString     iconDark;
  DOMString     providerLogoLight;
  DOMString     providerLogoDark;
};