3DESE, PPP Triple-DES Encryption Protocol

3DESE, PPP Triple-DES Data Encryption Standard Protocol

Protocol suite:	PPP.
Protocol type:	PPP encryption protocol.
ECP option:	2
SNMP MIBs:
Working groups:	pppext, Point-to-Point Protocol Extensions.
Links:

The Triple-Data Encryption Standard (3DES) Protocol provides an algorithm to encrypt PPP encapsulated packets.

RFC 2420, pages 1, 2 and 5:

The purpose of encrypting packets exchanged between two PPP implementations is to attempt to insure the privacy of communication conducted via the two implementations. There exists a large variety of encryption algorithms, where one is the DES algorithm. The DES encryption algorithm is a well studied, understood and widely implemented encryption algorithm. Triple-DES means that this algorithm is applied three times on the data to be encrypted before it is sent over the line. The variant used is the DES-EDE3-CBC, which is described in more detail in the text. It was also chosen to be applied in the security section of IP.

This document shows how to send via the Triple-DES algorithm encrypted packets over a point-to-point-link. It lies in the context of the generic PPP Encryption Control Protocol (ECP).

Once the ECP has reached the Opened state, the sender MUST NOT apply the encryption procedure to LCP packets nor ECP packets.

Glossary:

3DES, Triple-DES standard.
(RFC 2420) The DES encryption algorithm is a well studied, understood and widely implemented encryption algorithm. Triple-DES means that this algorithm is applied three times on the data to be encrypted before it is sent over the line.

Encryption.
(RFC 2420) The purpose of encrypting packets exchanged between two PPP implementations is to attempt to insure the privacy of communication conducted via the two implementations. There exists a large variety of encryption algorithms, where one is the DES algorithm.

RFCs:

[RFC 2420] The PPP Triple-DES Encryption Protocol (3DESE).

Publications:

Obsolete RFCs: