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| -rw-r--r-- | PROTOCOL.u2f | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/PROTOCOL.u2f b/PROTOCOL.u2f index 32bfa20f..066d0995 100644 --- a/PROTOCOL.u2f +++ b/PROTOCOL.u2f @@ -170,6 +170,10 @@ is signed over a blob that consists of: byte[] extensions byte[32] SHA256(message) +No extensons are yet defined for SSH use. If any are defined in the future, +it will be possible to infer their presence from the contents of the "flags" +value. + The signature returned from U2F hardware takes the following format: byte flags (including "user present") |