Question & Answer
Question
Does VTAM session level encryption (SLE) utilize Central Processor Assist for Cryptographic Function (CPACF)?
Answer
CPACF is a set of machine instructions (a microcode feature) that performs clear key cryptography. VTAM utilizes Integrated Cryptographic Service Facility (ICSF) for session level encryption. ICSF interfaces with CPACF, but will not select CPACF for VTAM SLE because VTAM is secure key only. VTAM SLE support is provided through the optional cryptographic coprocessors, accessed using ICSF application program interfaces (APIs).
For more information, see:
- "Virtual Telecommunications Access Method (VTAM) Session-level Encryption" in z/OS Version 2 Release 3 Integrated Cryptographic Support Facility Overview
- "Establishing Cryptographic Sessions" in z/OS V2R2.0 Communications Server: SNA Programming
- "Data Encryption" in z/OS V2R2.0 Communications Server: SNA Programmer's LU 6.2 Guide
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Document Information
Modified date:
15 June 2018
UID
swg21363927