M Roe, "Performance of Symmetric Ciphers and One-way Hash Functions", Fast Software Encryption 93 pp 83 - 89. M Roe, "Performance of Block Ciphers and Hash Functions - One Year Later", Fast Software Encryption 94 pp 359-362. ..or equivalent/similar papers they'd be willing to share? [these two papers might be available at http://www.esat.kuleuven.ac.be/ but they're off the air for the next couple of days] thanks, JeffH