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Q: 

MCRYPT_DEV_RANDOM always the same

I'm using MCRYPT_DEV_RANDOM and MCRYPT_DEV_URANDOM as part of blowfish encryption, but I'm noticing it outputs the same random digit every time. It differs from machine to machine, but it's the same in each machine.

  • Is this normal?
  • Does it affect the strength of the initialization vector (IV) I generate with it?

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