Abstract: A method of, and system for, changing encryption information in a computer network is provided. The method includes providing at least first cryptographic information and second cryptographic information. A first validity period is provided for the first cryptographic information and a second validity period is provided for the second cryptographic information wherein the first and second validity periods overlap.

Abstract: A method is provided of authenticating a user device requesting access to a computer system. The method includes encrypting current session data at a connection application of the user device via which a user requests access to the computer system, the current session data changing with each user request. The encrypted current session data is then included in user authentication data in an access request which is communicated in plain text which is then decrypted. Reference session data is then compared with the decrypted current session data and the user request is selectively categorized dependent upon the outcome of the comparison.

Abstract: A method of, and system for, associating a plurality of transaction data records generated in a service access system including a plurality of service providers is provided. The transaction data records are generated in response to a user accessing the system during a single user session. The method includes generating a unique session identification that is uniquely associated with the single user session and which is receivable by the service providers. The unique session identification is included in the transaction data record. The plurality of transaction data records is received at a transaction processing facility from the service providers and processes using the unique session identification of each transaction data record. In certain embodiments, the unique session identification is provided in a user identification string of each transaction data record when the user session is authentication.

Abstract: A method is provided to securely authenticate user credentials. The method includes encrypting a user credential with a public key at an access device wherein the public key is part of a public/private key pair suitable for use with an encryption algorithm. The encrypted network user credential is transmitted from the access device to a decryption server where it is decrypted with a private key, the private key being part of the public/private key pair suitable for use with the encryption algorithm. The decrypted user credential is then transmitted from the decryption server to an authentication server for verification. The decryption server typically forms part of a multi-party service access environment including a plurality of access providers, the method including decrypting the user credential of a user proximate an access provider associated with the user credential.