Create a Custom ISecureStoreProvider in Sharepoint 2013
I needed to create a custom ISecureStoreProvider in SPS 2013, to get my credentials from a custom database.
I followed this great article:
The only change was that I used an empty SharePoint Project to create my project.
To set my Custom ISecureStoreProvider as the default Secure Store Provider I run in Power Shell:
$type = [CustomSSSProvider.CustomSSSProvider]
Set-SPSecureStoreDefaultProvider –Type $type