FIDO Compliance Tool, BLE for U2F, required characteristics

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James Sferrazza

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Aug 28, 2024, 2:15:43 PM8/28/24

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Hi,

Referring to https://web.archive.org/web/20220623192934/https://fidoalliance.org/specs/fido-u2f-v1.2-ps-20170411/fido-u2f-bt-protocol-v1.2-ps-20170411.html#u2f-service,

"u2fServiceRevision defines the revision of the U2F Service. The value is a UTF-8 string. For version 1.0 of the specification, the value u2fServiceRevision SHALL be 1.0 or in raw bytes: 0x312e30. This field SHALL be omitted if protocol version 1.0 is not supported"

When running the U2F 1.1/1.2 compliance tool on OSX (1.7.20), BLE-1 Test U2F BLE support P-4 fails if the characteristic u2fServiceRevision is not present, stating that it must be present. If an authenticator does not support U2F 1.0 but 1.1/1.2, should it not be able to omit the characteristic (field) as stated?