The return code specifies the general result of the callable service. Appendix A. ICSF and TSS Return and Reason Codes lists the return codes.

The reason code specifies the result of the callable service that is returned to the application program. Each return code has different reason codes assigned to it that indicate specific processing problems. Appendix A. ICSF and TSS Return and Reason Codes lists the reason codes.

The length of the data that is passed to the installation exit. The length can be from X'00000000' to X'7FFFFFFF' (2 gigabytes). The data is identified in the exit_data parameter.

The data that is passed to the installation exit.

A 64-byte string for an internal key token or label that contains a data-encrypting key to be reenciphered. The data-encrypting key is encrypted under the master key.

A 64-byte string for an internal key token or key label that contains the exporter key_encrypting key. The data-encrypting key previously discussed will be encrypted under this exporter key_encrypting key.

A 64-byte field that is to receive the external key token, which contains the reenciphered key that has been exported. The reenciphered key can now be exchanged with another cryptographic system.

ICSF supports two methods of wrapping the key value in a symmetric key token: the original ECB wrapping and an enhanced CBC wrapping method which is ANSI X9.24 compliant. The output target_key_identifier will be wrapped in the same manner as the source_key_identifier.