Imports github.com/duo-labs/webauthn/protocol github.com/duo-labs/webauthn/protocol/googletpm github.com/duo-labs/webauthn/protocol/webauthncose github.com/fxamacker/cbor/v2 Standard library imports bytes crypto/ecdsa crypto/elliptic crypto/rand crypto/sha256 crypto/x509 crypto/x509/pkix encoding/base64 encoding/binary encoding/json encoding/pem fmt io/ioutil math math/big path time