As a modifier, public has many nongovernmental uses, as in public appearance, public figure, public display, public-key cryptography, public editor, public enemy, public storage, and public opinion.
www.slate.com Public-key cryptography can also be used for implementing digital signature schemes.
en.wikipedia.org Primes are used in several routines in information technology, such as public-key cryptography, which makes use of properties such as the difficulty of factoring large numbers into their prime factors.
en.wikipedia.org Bitcoin uses public-key cryptography, peer-to-peer networking, and proof-of-work to process and verify payments.
www.gizmag.com