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trezor-firmware/core/src/apps/webauthn
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matejcik 4ca8f7b0d6
style(core): use relative imports everywhere 		4 years ago
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metadata core/webauthn: update metadata 5 years ago
res common/defs/fido: add aws and tutanota 4 years ago
README.md core/webauth: Update readme with Ed25519 algorithm and certificates. 4 years ago
__init__.py style(core): use relative imports everywhere 4 years ago
add_resident_credential.py style(core): use relative imports everywhere 4 years ago
common.py core/webauthn: Implement support for Ed25519 signatures in FIDO2. 4 years ago
confirm.py style(core): use relative imports everywhere 4 years ago
credential.py style(core): use relative imports everywhere 4 years ago
fido2.py style(core): use relative imports everywhere 4 years ago
knownapps.py common/fido: Unify application labeling between U2F and FIDO2. 4 years ago
knownapps.py.mako common/fido: Unify application labeling between U2F and FIDO2. 4 years ago
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resident_credentials.py style(core): use relative imports everywhere 4 years ago

README.md

WebAuthn

MAINTAINER = Andrew R. Kozlik andrew.kozlik@satoshilabs.com

AUTHOR = Andrew R. Kozlik andrew.kozlik@satoshilabs.com

REVIEWER = Jan Pochyla jan.pochyla@satoshilabs.com, Ondrej Vejpustek ondrej.vejpustek@satoshilabs.com

This app implements WebAuthn authenticator functionality in accordance with the following specifications:

Supported features and algorithms

This implementation supports client-side credential storage on the device and user verification by PIN entry, making the Trezor T a first-factor roaming authenticator usable for passwordless login.

User verification

The device is capable of verifying the user within itself by direct PIN entry via the touchscreen. Client PIN is not supported, because it is less secure than direct PIN verification. The authenticatorClientPIN command is therefore implemented only to the extent required by the hmac-secret extension. Namely, only the getKeyAgreement subcommand is supported.

Credential selection

Credential selection is supported directly on the device. The authenticatorGetNextAssertion command is therefore not implemented.

Public key credential algorithms

  • COSE algorithm ES256 (-7): ECDSA using the NIST P-256 curve with SHA-256.
  • COSE algorithm EdDSA (-8): Pure EdDSA using the Ed25519 curve.

Extenstions

  • hmac-secret extension.

Attestation types

  • Basic attestation for login.microsoft.com.
  • Self attestation for all other sites.

AAGUID

The AAGUID is a 128-bit globally unique identifier indicating the type (e.g. make and model) of the authenticator. The AAGUID for Trezor T is d6d0bdc3-62ee-c4db-de8d-7a656e4a4487.

Certificates for basic attestation