1. A method comprising: providing authentication information of a user for a first domain and a second domain; receiving a set of instructions and cryptographic construct data, the set of instructions including information mapping one or more operations to at least one instruction ID; identifying a first instruction ID from the set of instructions corresponding to a first set of one or more operations; generating, using one or more processors in one or more computer systems, a first message using the cryptographic construct data; and sending the first message to a recipient.