It seems all these options are correct to me
- fingerprint of the provided input.
- A one-way deterministic hash function.
- symmetric hash function
- A hash function that generates a digest.
Anyone identify the wrong option and why?
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4$\begingroup$ The first is a shortcut for the last, and is arguably incorrect since "a hash" can be understood as the value output by the hash function, rather than the function. $\endgroup$ – fgrieu♦ May 12 '20 at 13:39
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$\begingroup$ Related for the definition of symmetric and asymmetric hash functions Difference between symmetric and asymmetric hash function? $\endgroup$ – kelalaka May 12 '20 at 16:51
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$\begingroup$ Appologies have amended my question. There was an error $\endgroup$ – Ayaz May 13 '20 at 7:27
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"A has that generates digest" seems wrong because a hash can not do much. You need a function to make something.
"A one-way deterministic hash function" is correct. In theoretic computer engineering, it is not known whether "one-way"-functions really exist. But in common sense hash is called a "one-way"-function. And they are deterministic. For the same input, you get the same output.
"symmetric hash function" is correct. Hash algorithms are part of symmetric cryptography.
"a hash function that generates a digest" is correct. See 1.
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2$\begingroup$ the 3. option is not totally correct. See my comment under the question. $\endgroup$ – kelalaka May 12 '20 at 16:52
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