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ONUR EREN ARPACI
ONUR EREN ARPACI
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I want to transform a semi random input to a shorter, uniformly random bit string. Assuming there is enough entropy in the semi random input, can I use a collision resistant hash function to extract randomness?

Update
After the first answer pointed out that the body of the question is not correctly asking the intended question, I didn’t want to edit the question, so that the answer given wouldn’t be confusing for the other readers. But the linked question, that is said to be duplicate, definitely does not answer my question.

I want to transform a semi random input to a shorter, uniformly random bit string. Assuming there is enough entropy in the semi random input, can I use a collision resistant hash function to extract randomness?

I want to transform a semi random input to a shorter, uniformly random bit string. Assuming there is enough entropy in the semi random input, can I use a collision resistant hash function to extract randomness?

Update
After the first answer pointed out that the body of the question is not correctly asking the intended question, I didn’t want to edit the question, so that the answer given wouldn’t be confusing for the other readers. But the linked question, that is said to be duplicate, definitely does not answer my question.

Post Closed as "Duplicate" by kodlu, kelalaka, AleksanderCH
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ONUR EREN ARPACI
ONUR EREN ARPACI
  • 11
  • 2

Can I use a cryptographic hash function such as sha256 for Randomness Extraction

I want to transform a semi random input to a shorter, uniformly random bit string. Assuming there is enough entropy in the semi random input, can I use a collision resistant hash function to extract randomness?