The CSNBRNGL callable service returns a value under the following conditions:

• The server has the cryptographic coprocessor that supports CSNBRNGL and the coprocessor creates the random number with the desired length. This requires a CEX2C or CEX3C with a version of the licensed internal code (LIC) that supports the RNGL verb.
• The server has the cryptographic coprocessor that processes CSNBRNG requests. In this case, the CSNBRNGL callable service calls the processor to create the random number with the desired length, 8 bytes at a time.

This table lists the required cryptographic hardware for each server type and describes restrictions for this callable service.

Table 82. Random number generate required hardware

Server	Required cryptographic hardware	Restrictions
IBM zSeries 900	Cryptographic Coprocessor Feature
IBM zSeries 990 IBM zSeries 890	PCI X Cryptographic Coprocessor Crypto Express2 Coprocessor
IBM System z9 EC IBM System z9 BC	Crypto Express2 Coprocessor