Available in all subroutines.
Returns a SHA-1-based message authentication code based on the supplied
key and string
declare local var.hmac_sha1 STRING;set var.hmac_sha1 = digest.hmac_sha1("key", "input");# var.hmac_sha1 is now "0x8513bb355076cce2ae5eb9f399ab5cafdba7c8a2"
Try it out
digest.hmac_sha1 is used in the following solution recipes, which show real world use cases. Click RUN to provision a Fastly service, execute the code on Fastly, and see how the function behaves.
Time-limited URL tokens
Make URLs expire after a configurable period.
User contributed notes
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