To start the communication with JWS, an initial Nonce value must be
fetched from the server.
The Nonce returned is internally store in the AcmeResource structure.
Note:
Use the Nonce of a JWS response header to update the Nonce for the
next transfer! So, only a single call to this function is needed to
setup the initial transfer.
Get a fresh and new Nonce from server
To start the communication with JWS, an initial Nonce value must be fetched from the server.
The Nonce returned is internally store in the AcmeResource structure.
Note: Use the Nonce of a JWS response header to update the Nonce for the next transfer! So, only a single call to this function is needed to setup the initial transfer.