Client side OTP generation method

A method for authenticating a client machine with a server machine using a one-time code (OTC), the method comprising steps to:

• store, by the client machine, a cypher text in memory at the client machine, wherein the cypher text comprises a masked grid with a seed;
• construct, by the client machine, a solution for the cypher text using the seed and data values in the masked grid;
• transmit, by the client machine, the constructed solution to the server machine to unlock the masked grid;
• unmask the seed, by the server machine, using the constructed solution from the client machine and a data grid stored in memory at the server machine;
• transmit, by the server machine, an unmasked seed to the client machine;
• transmit, by the server machine, authorization codes to the client machine;
• dynamically generate, by the client machine, a one-time code (OTC) using the unmasked seed, the authorization codes, and the masked grid;
• send, by the client machine, the OTC to the server machine, wherein the OTC corresponds to the authorization codes;
• validate, by the server machine, the OTC from the client machine using the data grid stored in memory at the server machine;
• and
• after validation of the OTC by the server machine, grant, by the server machine, the client machine access to a database at the server machine.

One or more non-transitory computer-readable media storing instructions that, when executed by one or more computer processors, causes one or more client machines to:

• store, by a client machine, a cypher text in memory at the client machine, wherein the cypher text comprises a masked grid with a seed;
• construct, by the client machine, a solution for the cypher text using the seed and data values in the masked grid;
• transmit, by the client machine, the constructed solution to a server machine to unlock the masked grid;
• receive, by the client machine from the server machine, an unmasked seed and authorization codes, wherein the server machine unmasked the seed using the constructed solution from the client machine and a data grid stored in memory at the server machine;
• dynamically generate, by the client machine, a one-time code (OTC) using the unmasked seed, the authorization codes, and the masked grid;
• send, by the client machine, the OTC to the server machine, wherein the OTC corresponds to the authorization codes;
• and
• receive a grant, from the server machine, after validation of the OTC by the server machine, to access, by the client machine, a database at the server machine, wherein the server machine used the data grid stored in memory at the server machine to validate the OTC from the client machine.