METHOD AND SYSTEM FOR AUTHENTICATION OVER A PUBLIC NETWORK USING MULTIPLE OUT-OF-BAND COMMUNICATIONS CHANNELS TO SEND KEYS

摘要

A method includes sending an open request to a directory server for a first key, the first key being a trusted key wrapped in a public key. The open request includes an authentication request value that identifies the open request as a verified setup directory service, the public key, an email address and a specified out-of-band communication channel. The directory server sends a first reply after generating the first key, which first reply is sent directly back with a first half of the first key offset by a unique value and wrapped using the public key. The second reply is sent via email to the email address, which second reply includes a second half of the first key offset by the first half of the first key. The third reply is sent to the out-of-band channel, which third reply includes the unique value