CSNBSYE and CSNBSYE1 provide identical functions. When choosing which service to use, consider this:

• CSNBSYE requires the cleartext and ciphertext to reside in the caller’s primary address space. Also, a program using CSNBSYE adheres to the IBM Common Cryptographic Architecture: Cryptographic Application Programming Interface.

  The callable service name for AMODE(64) invocation is CSNESYE.

• CSNBSYE1 allows the cleartext and ciphertext 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 CSNBSYE1 does not adhere to the IBM Common Cryptographic Architecture: Cryptographic Application Programming Interface, and may need to be modified prior to it running with other cryptographic products that follow this programming interface.

  For CSNBSYE1, clear_text_id and cipher_text_id are access list entry token (ALET) parameters of the data spaces containing the cleartext and ciphertext.

  The callable service name for AMODE(64) invocation is CSNESYE1.