DES Null Key Token

z/OS Cryptographic Services ICSF System Programmer's Guide

DES Null Key Token

z/OS Cryptographic Services ICSF System Programmer's Guide
SA22-7520-17

Table 51 shows the format for a DES null key token.

Table 51. Format of Null Key Tokens
Bytes	Description
0	X'00' (flag indicating this is a null key token).
1–15	Reserved (set to binary zeros).
16–23	Single-length encrypted key, or left half of double-length encrypted key, or Part A of triple-length encrypted key.
24–31	X'0000000000000000' if a single-length encrypted key, the right half of double-length encrypted key, or Part B of triple-length encrypted key.
32–39	X'0000000000000000' if a single-length encrypted key or double-length encrypted key.
40–47	Reserved (set to binary zeros).
48–55	Part C of a triple-length encrypted key.
56–63	Reserved (set to binary zeros).