SHA1 checksums in links

Hi there! I’m super new to N8n. I’d like to grab some data using N8n from BigBlueButton.

BBB API requires adding SHA1 checksums to requests:

What would be the best way to handle it with N8n?

Hey @PrzemekJ hope all is well, welcome to the community.

One way to calculate sha1 of a given string is to run Execute Node:

input: StringThatNeedsToBeSha1-ed
output: 0667de2d3f82a34efba9109be14c07f4638051ac

Does this help?

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Great. But I’m stuck at securely storing some secret value in the workflow. I see there is a credentials section. I can set custom one. Let’s assume I did something like:

{
  "key" : "mysupersecretkey"
}

How do I use it in the workflow? I’d like to grab only the value stored under “key”.

Credentials are passwords, api keys, headers and other means of getting into external systems (and not a secret vault/storage). What type of credentials are you planning to use?