HashDRBGStream.extraInput

Further improve security by setting Hash_DRBG's optional "additional input" for each call to read(). This can be set to a new value before each read() call for maximum effect.

This setting is for changing read()'s default bahavior. Individual calls to read() can manually override this per call.

struct HashDRBGStream(TSHA = SHA512, string custom = "D Crypto RNG", EntropyStream = SystemEntropyStream!())
ubyte[] extraInput;

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