feat(fingerprint): add fingerprint table and corresponding db interface #75
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… add-fingerprint-table
…tarus into add-fingerprint-table
NishantJoshi00
requested changes
Feb 7, 2024
…tarus into add-fingerprint-table
NishantJoshi00
approved these changes
Feb 7, 2024
Chethan-rao
approved these changes
Feb 7, 2024
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The fingerprint table consists of three columns:
id,card_hash, andcard_fingerprint. Theinsert_fingerprintfunction takes thecard detailsand thehash key. It calculates the card hash using thehmac-sha512algorithm. This card hash is used as a lookup in thefingerprinttable. If a match is found, the correspondingcard_fingerprintis returned. If no match is found, then anano idfor thatcard_hashis generated which will used as fingerprint for that particular card and inserted into the fingerprint table, and the corresponding fingerprint is returned in the response.