I have some SW that extracts certificates data and the SW utilizes OpenSSL. I am confused what is the difference between the subjectKeyIdentifier and the sha1Fingerprint. Both are hash values. My intuition is that the subjectKeyIdentifier is the hash of the public-key of the certificate and the sha1Fingerprint is the hash of the overall fields of the certificate. This reference says about the subjectKeyIdentifier:

This is a hash value of the SSL certificate.

This is an example of what I get from the SW:

"subjectKeyIdentifier": "A8:XX:6A:XX:04:7D:DD:BA:E6:D1:XX:XX:XX:45:65:EF:F3:XX:EC:XX", "sha1Fingerprint": "E6:XX:XX:5B:06:XX:50:9B:XX:82:XX:2D:XX:6E:XX:97:XX:95:XX:CB" 

Note: XX in the examples is used for redaction.

The question is: What is the difference between the two hashes? What each hash is for?