Added in 2.3
$hmac(text|&binvar|filename, [key], [hash], [N])
Returns an HMAC (keyed-Hash Message Authentication Code) based on the supplied key.
Parameters
| Parameter | Description |
| text|&binvar|filename | The text or &binvar or filename to calculate. |
| [key] | The key to hash with. (optional) |
| [hash] | Hash type: md5, sha1 (default), sha256, sha384, or sha512. (optional) |
| [N] | The type to calculate N = 0 for plain text (default), 1 for &binvar, 2 for filename. (optional) |
Example
; calculate the sha1 hmac hash for the text 'Hello World' using the key 'test'. //echo -ag The sha1 hmac for Hello World is $hmac(Hello World, test, sha1)