Available in all subroutines.
Returns a SHA-1 cryptographic hash for the string
s. SHA-1 has known
attacks reducing its strength by over half and should not be considered
a strong cryptographic hash function.
declare local var.hash_sha1 STRING;set var.hash_sha1 = digest.hash_sha1("123456789");# var.hash_sha1 is now "f7c3bc1d808e04732adf679965ccc34ca7ae3441"
Try it out
digest.hash_sha1 is used in the following code examples. Examples apply VCL to real-world use cases and can be deployed as they are, or adapted for your own service. See the full list of code examples for more inspiration.
Click RUN on a sample below to provision a Fastly service, execute the code on Fastly, and see how the function behaves.
Check validity of inputs using a non-crypto hash
Block or identify syntactically invalid requests at the edge by using a hash function of your choice.