Historic: Internet Privacy Enhanced Mail (PEM)
This proposed internet standard defines Message Encryption and Authentication Services in a series of four RFCs.
Privacy Enhancement services confidentiality, authentication, message integrity assurance, non-repudiation of origin are offfered through the use of end-to-end cryptography between originator and recipient processes at or above the user agent level.
No special processing requirements are imposed on the Message Transfer System at endpoints or at intermediaterelay sites.
- RFC 1421: Message encryption and authentication procedures and formats
- RFC 1422: Key Management based on public-key certificates (X.509)
- RFC 1423: Algorithms, modes, identifiers
- RFC 1424: Key certification and revocation procedures