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Nick Zana 6ef8cee4de fido-common: Add attestation::Statement data type
Attestation statements are returned as part of the CBOR maps returned by
authenticators in response to authenticatorMakeCredential and
authenticatorGetAssertion commands.

The attestation statements defined by WebAuthn come in various formats.
However, the format identifier is not part of the attestation statement
field in the CBOR map (0x03 attStmt), but rather as a distinct format
field (fmt 0x01).

Normally, this could be worked around with an externally tagged enum,
but using integer tags is not currently supported by serde. By marking
the enum instead as untagged, this should ideally mean that serde can
differentiate between the enum variants by the fields of the attestation
statement, which is itself a CBOR map.

Otherwise, we could always revert to just raw byte sequences for the
attestation statements during (de)serialization and push validating
these statements onto another part of the code.
2 years ago
crates fido-common: Add attestation::Statement data type 2 years ago
.gitignore ignore target 2 years ago
Cargo.lock Update Cargo.lock 2 years ago
Cargo.toml Add workspace Cargo.toml 2 years ago
rustfmt.toml add rustfmt.toml 2 years ago