SapphireIMS internally use NetSNMP stack 5.7 version library and it has support for AES-128 as encryption (privacy) and SHA-1 as authorization method as of now.
We are looking to upgrade NetSNMP 5.8 or 5.9 version library which shall have support for AES-192, AES-256 and SHA-2 with bit lengths SHA-224, SHA-256, SHA-384 and SHA-512. Once we support we shall announce availability of the same through release channel,