Available in all subroutines.

Returns a SHA-256-based message authentication code based on the supplied key and string s.


declare local var.hmac_sha256 STRING;
set var.hmac_sha256 = digest.hmac_sha256("key", "input");
# var.hmac_sha256 is now "0x9e089ec13af881a8ac227a736c3e7c490ea3b4afca0c5f83dff6393b683a72e3"

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