Wiktionary
n. The unpublished key in asymmetric cryptography.
Usage examples of "private key".
Vance, he had his own private key to the Odell apartment, all right.
Before Ordo will decrypt the file, it needs to have the private key: all 4096 bits of it.
The boffobrain had been exchanging keys with another agent Cal had sent his own public key to the second agent, who then encrypted her oh-so-secret private key with Cal's public key.
Alone in his office, he threw the coat across the back of a chair and for the first time that day, with a little peace and quiet, was able to use his private bathroom, using his private key to his private door with the private lock that cost $23.
Inserting his private key-card he entered a five-digit personal ID number then pressed the 'DECODE' button.
Peter crossed over, opened the door and welcomed in Private Key, very suspicious and uncertain and guilty.