SNA LU 6.2 security services
Note:
This section assumes that you have a basic understanding of
Systems Network Architecture (SNA). Each of the books referenced in this section
contains a brief introduction to the relevant concepts and terminology. If
you require a more comprehensive technical introduction to SNA, see Systems Network Architecture Technical Overview, GC30-3073.
SNA LU 6.2 provides three security services:
- Session level cryptography
- Session level authentication
- Conversation level authentication
For session level cryptography and session level authentication, SNA uses
the Data Encryption Standard (DES) algorithm. The
DES algorithm is a block cipher algorithm, which uses a symmetric key for
encrypting and decrypting data. Both the block and the key are eight bytes
in length.