Core Function RandomSeed
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Revision as of 16:27, 1 August 2014
RandomSeed( <flag>, <size> )
Contents |
Description
Generator a cryptographically strong random number for use as a seed.
Parameters
flag
Optional; Type of random number to generate.
0 = Generate a random unsigned Int32 1 = Generate a random unsigned Int64 2 = Generate a random binary variable (you provide size)
Default: 0
size
Optional; Size in bytes of the binary variable to make
This is only when when flag is 2
Default: 4
Return Value
Success: Returns a cryptographically strong random number/binary array.
Failure: Return null.
Remarks
This uses the the .NET RNGCryptoServiceProvider to do the generating.
You can use the return value for anything that needs a good seed.
This can also be used to generate random numbers but RandomVar() is more generic for that task.
Example
$random = RandomSeed(); // 32 Bit $random = RandomSeed(1); // 64 Bit $random = RandomSeed(2, 10); // Binary variable 10 bytes in size
