# Functions
*
* Get signature according to stringToSign, secret
* @param stringToSign the signed string
* @param secret accesskey secret
* @return the signature
*/.
*
* Get the string to be signed according to request
* @param request which contains signed messages
* @return the signed string
*/.
*
* Encode data in events
* @param events the object
* @return the result
*/.
*
* Judge if the origin is start with the prefix
* @param origin the original string
* @param prefix the prefix string
* @return the result
*/.