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# File 'lib/omni_auth/strategies/jwt.rb', line 40
def decoded
secret =
case options.algorithm
when *%w[RS256 RS384 RS512]
OpenSSL::PKey::RSA.new(options.secret).public_key
when *%w[ES256 ES384 ES512]
OpenSSL::PKey::EC.new(options.secret).tap { |key| key.private_key = nil }
when *%w[HS256 HS384 HS512]
options.secret
else
raise NotImplementedError, "Unsupported algorithm: #{options.algorithm}"
end
@decoded ||= ::JWT.decode(request.params['jwt'], secret, true, { algorithm: options.algorithm }).first
(options.required_claims || []).each do |field|
raise ClaimInvalid, "Missing required '#{field}' claim" unless @decoded.key?(field.to_s)
end
raise ClaimInvalid, "Missing required 'iat' claim" if options.valid_within && !@decoded["iat"]
if options.valid_within && (Time.now.to_i - @decoded["iat"]).abs > options.valid_within.to_i
raise ClaimInvalid, "'iat' timestamp claim is too skewed from present"
end
@decoded
end
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