Available in all subroutines.

Returns an MD5-based message authentication code based on the supplied key and string s. The returned code is Base64-encoded.


declare local var.hmac_md5_base64 STRING;
set var.hmac_md5_base64 = digest.hmac_md5_base64("key", "input");
# var.hmac_md5_base64 is now "cZ/HW66QBNnoQqSxW4KMBg=="

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