SHA-512 hash procedure needed

I want to order an EA or Script that will convert input string into SHA-512 hash (output string) and put the result on Alert.

Very simple - No trading, no indicators, just 1 function with string output - pure math.

the problem with MQL4 is that it does not support SHA512 by default so i cannot use function:

 CryptEncode(CRYPT_HASH_SHA256,data_char,secret_char,output_char);

the goal is to have such function for SHA-512

If anyone has experience with it please leave a message.