Privacy-Enhanced Mail

Internet security
protocols
Key management
Application layer
Domain Name System
Internet Layer

Privacy-Enhanced Mail (PEM) is a de facto file format for storing and sending cryptographic keys, certificates, and other data, based on a set of 1993 IETF standards defining "privacy-enhanced mail." While the original standards were never broadly adopted and were supplanted by PGP and S/MIME, the textual encoding they defined became very popular. The PEM format was eventually formalized by the IETF in RFC 7468.[1]

  1. ^ Johnson, Mike (1995-10-01). "Cryptology in Cyberspace". Cryptologia. 19 (4): 392–396. doi:10.1080/0161-119591884042. ISSN 0161-1194. S2CID 41770450.