Public Key Fingerprint
October 2, 2023 |
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Summary #
In Public-key Cryptography, a fingerprint is a short sequence of bytes used to identify a longer public key. Fingerprints are created by applying a cryptographic function to a public key. Since fingerprints are shorter than the keys they refer to, they can be used to *simplify certain key management tasks.
When displayed for human inspection, fingerprints are usually encoded into strings. These strings are then formatted into groups of characters for readability. For example, a 128-bit MD5 fingerprint for SSH would be displayed as follows:
43:51:43:a1:b5:fc:8b:b7:0a:3a:a9:b1:0f:66:73:a8