GSM A5 Papers

[John Young <jya@pipeline.com>]

We would be grateful for assistance in obtaining copies of the
following papers, particularly the first:

  S J Shepherd, "Cryptanalysis of the GSM A5 Cipher Algorithm",
  IEE Colloquium on Security and Cryptography Applications to
  Radio Systems, Digest No. 1994/141, Savoy Place, London, 3
  June 1994, (COMMERCIAL-IN-CONFIDENCE).

  S J Shepherd, "An Approach to the Cryptanalysis of Mobile
  Stream Ciphers", IEE Colloquium on Security and Cryptography
  Applications to Radio Systems, Digest No. 1994/141, Savoy
  Place, London, 3 June 1994, (COMMERCIAL-IN-CONFIDENCE).

  S J Shepherd, "Public Key Stream Ciphers", IEE Colloquium on
  Security and Cryptography Applications to Radio Systems,
  Digest No. 1994/141, pp 10/1-10/7, Savoy Place, London, 3 June
  1994.

These are listed on Dr Shepherd's bio at:

     http://vader.brad.ac.uk/finance/SJShepherd.html