+A **Key Identifier** is a unique label assigned to a [Cryptographic Key](/wiki/cryptographic_key), acting as its distinct fingerprint. It enables efficient [Key Management](/wiki/key_management) by distinguishing one key from another across systems and protocols, ensuring the correct key is always found and applied.
+## See also
+- [Public Key](/wiki/public_key)
+- [Private Key](/wiki/private_key)
+- [Digital Signature](/wiki/digital_signature)
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