Add openssl example for registration HMAC (#13472)

Signed-off-by: James Barton <james@neodon.com>
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James Barton 2022-08-11 15:10:10 -05:00 committed by GitHub
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changelog.d/13472.doc Normal file
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Add `openssl` example for generating registration HMAC digest.

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@ -46,7 +46,24 @@ As an example:
The MAC is the hex digest output of the HMAC-SHA1 algorithm, with the key being
the shared secret and the content being the nonce, user, password, either the
string "admin" or "notadmin", and optionally the user_type
each separated by NULs. For an example of generation in Python:
each separated by NULs.
Here is an easy way to generate the HMAC digest if you have Bash and OpenSSL:
```bash
# Update these values and then paste this code block into a bash terminal
nonce='thisisanonce'
username='pepper_roni'
password='pizza'
admin='admin'
secret='shared_secret'
printf '%s\0%s\0%s\0%s' "$nonce" "$username" "$password" "$admin" |
openssl sha1 -hmac "$secret" |
awk '{print $2}'
```
For an example of generation in Python:
```python
import hmac, hashlib