CPAN::Groonga

OpenSSL::X509 1.806;
use CryptX 0.034;
use Crypt::PK::ECC;
use Digest::SHA qw(sha256);
use JSON qw(decode_json);

use parent 'Exporter::Tiny';
our @EXPORT_OK = qw(u2f_challenge u2f_registration_verify

't decode client data; not valid Base64-URL?"
    unless $client_data;

  {
    my $data = decode_json($client_data);
    croak "invalid client data (challenge doesn't match)"
      unless $data->{cha

-byte sha256(app ID)                      (application parameter)
  # 32-byte sha256(client data (JSON-encoded))  (challenge parameter)
  #         key handle
  # 65-byte key

  my $app_id_sha = sha25