Split channel authenticity queries in multi-party dialog

A system for initiating checking of the authenticity of a second party in a multi-party dialog, said system comprising:

• a first communication device with a main control central processing unit adapted to:
• receive a request for the second party to participate in the multi-party dialog;
• in response to receipt of the request, generate an authenticity challenge query data string, wherein the authenticity challenge query data string comprises a question that is easily answerable by the second party in the multi-party dialog if the second party is authentic;
• form, using said authenticity challenge query data string and a first data string, at least a second data string;
• send said first data string to a first address associated with said second party;
• send said second data string to a second address associated with said second party;
• receive, at said first communication device, an answer to the question from a second communication device associated with said second party;
• determine that said answer is correct;
• and
• allow participation of said second party in said multi-party dialog to proceed.

A computer program storage medium holding a computer program, which, when executed by a processor to initiate a check of the authenticity of a second party in a multi-party dialog, causes said processor to:

• receive a request for the second party to participate in the multi-party dialog;
• in response to receipt of the request, generate an authenticity challenge query data string, wherein the authenticity challenge query data string comprises a question that is answerable by the second party in the multi-party dialog if the second party is authentic;
• form, using said authenticity challenge query data string and a first data string, at least a second data string;
• send said first data string to the first address associated with said second party;
• send said second data string to a second address associated with said second party;
• receive an answer to the question from a second communication device associated with said second party;
• determine that said answer is correct;
• and
• allow participation of said second party in said multi-party dialog to proceed.

A system for use for a dialog between a first party and at least a second party, said system comprising:

• a first communication device for use by said first party, said first communication device adapted to:
• receive a request for the second party to participate in the multi-party dialog;
• in response to receipt of the request, generate an authenticity challenge query data string, wherein the authenticity challenge query data string comprises a question that is answerable by the second party in the multi-party dialog if the second party is authentic;
• form, using said authenticity challenge query data string and a first data string, at least a second data string;
• send said first data string to a first address associated with said second party;
• send said second data string to a second address associated with said second party;
• receive an answer to the question of said authenticity challenge query data string from a second communication device associated with the second party;
• determine that said answer is correct;
• and
• responsive to said determining, allow participation of said second party in said dialog to proceed;
• the second communication adapted to:
• receive said first data string;
• receive said second data string;
• reconstruct said authenticity challenge query data string from said first data string and said second data string;
• formulate said answer to the question of said authenticity challenge query data string;
• and
• send said answer to an address associated with said first party.