Abstract: A system and method for secure data transmission, data storage and data retrieval over a network is disclosed. The data containing, for example, sensitive information such as billing and shipping records in a commercial transaction, is encrypted and placed on one system, with the encryption/decryption key placed on another system. The only relationship between the systems is the fact that they have exchanged information. This system is difficult to breach because both systems need to be compromised in order to access the encrypted data.