UniBasic Commands Reference - Rocket Software

setRandomSeed
Syntax
setRandomSeed(inFiles, outFile, length, context)
Note: This function is case-sensitive. If you want it to be case-insensitive, you
must compile your programs using the BASIC command with the -i option.
Description
The setRandomSeed() function generates a random seed file from a series of source
files and sets that file as the default seed file for the supplied security context.
The strength of cryptographic functions depends on the true randomness of the keys.
This function generates and sets the random seed file used by many of the UniData
cryptographic functions. By default, UniData uses the .rnd file in your current
account. You can override the default by calling this function.
The random seed file is specified by outFile, which is generated based on source files
specified in inFiles. For Windows platforms, multiple files must be separated by “;”
(a semi-colon). For Unix platforms, multiple files must be separated by “:” (a colon).
The length parameter specifies how many bytes of seed data UniData should
generate.
If you do not specify a source in the inFiles parameter, the outFile parameter must
already exist.
If you do not specify context, the seed file will be used as a global seed file that
applies to all cryptographic functions. However, a seed file setting in a particular
security context will always override the global setting.
1-732 UniBasic Commands Reference