SHA256, SHA384 and SHA512 hash functions

I need a function that creates SHA256, SHA384 and SHA512 hash in a way that is done on these websites:

https://hash.online-convert.com/sha256-generator (sha256)

https://www.freeformatter.com/hmac-generator.html#ad-output (creates all 3 of them)

the SHA256 function from: (for example)

"The quick brown fox jumps over the lazy dog"

encoded by secret key:

"ABCDEFG"

should return a string:

"37e35181ba93ec243ce807651a476d5304c5ded808997b01885c91cc4bef303b"

the SHA512 function, should return:

"386ddc60bd93671445ba45d3d895a338dcea21c33cde81c68a817440a9d26451f6b1921ee569eab1b12336c8a91a5819761b3b211afc18a4df2d345021736afc"

the SHA384 needs to return:

"c8e50aec495fe955bc85915140d6a097e995a99f9d1e3d42cd22df64c71683c469a6c16ba041be89401cb47bcae26111"

All other entered strings and passwords should end up with the same results as on those sites (with non-capital letters).

The result needs to be provided in a form of simple MT4 Expert Advisor. The solution should not use external DLLs.