KeyAgreement algorithms

Description:

[[need more detail]]

Alias:

"1.2.840.113549.1.3.1"

References:

• [Def] PKCS #3: Diffie-Hellman Key-Agreement Standard,
  An RSA Laboratories Technical Note, Version 1.4. Revised November 1, 1993. ftp://ftp.rsa.com/pub/pkcs/ascii/pkcs-3.asc
• [Inf] Whitfield Diffie et al,
  "New Directions in Cryptography,"
  IEEE Transactions on Information Theory, Vol. IT-22, No. 6, pp. 644-654. November 1976.
• [Inf] Whitfield Diffie et al,
  "Multiuser Cryptographic Techniques,"
  AFIPS Conference Proceedings, Vol. 45, pp. 109-112. June 8, 1976.
• [Patent] M. E. Hellman, R. C. Merkle,
  "Public Key Cryptographic Apparatus and Method,"
  U.S. Patent 4,218,582, filed October 6 1977, issued August 19 1980.
• [An] Paul Kocher,
  "Timing Attacks on Implementations of Diffie-Hellman, RSA, DSS, and Other Systems,"
  http://www.cryptography.com/timingattack/paper.html

Patent status:

The patent referenced above, although it only directly describes knapsack-based cryptosystems, was claimed to cover all public key cryptography. It expired in 1997.

Security comment:

DH key agreement on its own does not provide authentication of either party, and is therefore vulnerable to a man-in-the-middle attack.

Author: David Hopwood <hopwood@zetnet.co.uk> Current maintainer: David Hopwood <hopwood@zetnet.co.uk> Copyright © 1995-2000 The Cryptix Foundation Limited. All rights reserved. Cryptix is a trademark of The Cryptix Foundation Limited.