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Prime numbers have patterns and rules, maybe NSA uses that for making hash functions

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(Why NSA everytime uses primes for making hash functions?)

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Nonsense and FUD.

There are no prime numbers used in the SHA256 hash function.

1. Yes

2. No

There are prime numbers in SHA256. Look at the NIST paper. It is set K, which uses the first 64 primes.

But the whole purpose of using primes is to prove "nothing is up my sleeve". That is literally their sole purpose. The creators of SHA256 could have used other irrational numbers and then maybe...that would cause concern.

Lol, the suggested "fix" is pretty funny...

...with commonly known numbers like birthdays of famous people in 1962.