Hi,
I am an individual working as Salesforce Consultant at one of the MNC located at Bangalore, India. I am having 7+ years of experience in IT industry, which includes 4 years in Salesforce custom development.
I have completed more than 6 end to end salesforce implementation which includes sales cloud, service cloud, community, knowledge base, SOAP integration, REST integration, js remoting, jquery within visualforce pages.
I have extensively worked in Apex Classes,Triggers, Batch classes and other configuration elements and knowing all best practices/methodology of salesforce.
I am salesforce dev,admin,service cloud certified.
Please find my below understanding from your posted requirements.
You are using salesforce flow for some business process and using some variable of flow. after some point(I assume at end) of the flow, you wanted to send variable data to other system using REST api with SHA1 encryption key.
Please add me in your contact list, so we can discuss further on this.
Thanks,
PanaraIt