CSNBSAE, CSNBSAE1, CSNESAE, and CSNESAE1 provide identical functions. When choosing which service to use, consider this:

• CSNBSAE and CSNESAE require the cipher text and plaintext to reside in the caller's primary address space. Also, a program using CSNBSAE adheres to the IBM Common Cryptographic Architecture: Cryptographic Application Programming Interface.
• CSNBSAE1 and CSNESAE1 allow the cipher text and plaintext to reside either in the caller's primary address space or in a data space. This can allow you to encipher more data with one call. However, a program using CSNBSAE1 and CSNESAE1 does not adhere to the IBM CCA: Cryptographic API and may need to be modified prior to it running with other cryptographic products that follow this programming interface.

For CSNBSAE1 and CSNESAE1, cipher_text_id and clear_text_id are access list entry token (ALET) parameters of the data spaces containing the cipher text and plaintext.