He was awarded his PhD in 1991 in the field of computer security, for a PhD thesis which analysed the DES encryption algorithm and then presented the design of the LOKI89 private-key block cipher. This was subsequently modified into LOKI91, a private key block cipher with 64-bit data and 64-bit keys, which can be used as a replacement for the DES.
His research interests include cryptography, communications and computer systems security, safe mobile code execution, and trust issues in eCommerce. You can see his research papers, and some seminars he has given.
He was awarded his PhD in 1991 in the field of cryptography, for a PhD thesis which analysed the DES encryption algorithm and then presented the design of the LOKI private-key block cipher. He then developed the AES candidate LOKI97 block cipher. Subsequently, his research changed focus to the Safe Erlang mobile code system, started during his 1997 and 2002 sabbaticals, and continued during some subsequent summer visits to the Monash Uni Peninsula School of IT. More recently, he has been looking at several aspects of trust in eCommerce with some of my PhD students. His current research interests concern the use of Proxy Certificates for Client Authentication which he started during his 2010 sabbatical. He has also supervises postgraduate research students working on various aspects of security.
You can also look at Lawries Cryptography Bibliography, or see some of his Seminars and TRs and other papers,