Wiktionary
public key
n. The public one of the two keys used in asymmetric cryptography.
Usage examples of "public key".
Anyone could send him a confidential message by encrypting it with this public key.
She joined in the laughter and sometimes the discussion: There was the time Blueshell had a humor fit at Pham's faith in public key encryption, and Ravna knew some stories of her own to illustrate the Rider's opinion.
Under Microsoft's implementation of RAS, the shared secret is the user password (Other methods include public key encryption).