'What is the value range of SHA2_256 (SHA2_256())？

Use the SHA2_256 function to calculate its possible values.

That is, SHA2_256(S), S is a positive integer from 0 to 2^256, that is, all possible values of 256-bit binary numbers.

Calculated to obtain a value range, which also belongs to 0 to 2^256, but some values may be mapped many times, and some may not be mapped.

What is the proportion of the mapped values in the entire range of 0 to 2^256?

hash cryptography sha256

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