Core Function RandomSeed

RandomSeed( <flag>, <size> )

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

Generation

$random = RandomSeed(); // 32 Bit
$random = RandomSeed(1); // 64 Bit
$random = RandomSeed(2, 10); // Binary variable 10 bytes in size

Apply to seed to Sputniks internal RNG

$Seed = RandomSeed();
RandomSeedSet($Seed);