File security tool

A method comprising:

• dividing a file into a first portion, a second portion, and a third portion, the file comprises a first part, a second part, a third part, a fourth part, and a fifth part in sequential order, the first portion comprises the first part and the third part, the second portion comprises the second part and the fifth part, the third portion comprises the fourth part;
• encrypting the first portion using a first key to produce a first token;
• encrypting the second portion using the first key to produce a second token;
• encrypting the third portion using the first key to produce a third token;
• communicating the second token to a first user;
• communicating the third token to a second user;
• receiving a fourth token with a signature of the first user;
• receiving a fifth token with a signature of the second user;
• combining the first token, the fourth token, and the fifth token to produce a second key;
• determining whether the second key matches the first key;
• if the second key does not match the first key, communicating an alert indicating that the first key does not match the second key;
• and
• if the second key does match the first key, decrypting first, fourth, and fifth tokens to reproduce the file.

A system comprising:

• a device of a first user;
• and
• a file security tool comprising a hardware processor, the hardware processor configured to:
• divide a file into a first portion, a second portion, and a third portion, the file comprises a first part, a second part, a third part, a fourth part, and a fifth part in sequential order, the first portion comprises the first part and the third part, the second portion comprises the second part and the fifth part, the third portion comprises the fourth part;
• encrypt the first portion using a first key to produce a first token;
• encrypt the second portion using the first key to produce a second token;
• encrypt the third portion using the first key to produce a third token;
• communicate the second token to the first user;
• communicate the third token to a second user;
• receive, from the device, a fourth token with a signature of the first user;
• receive a fifth token with a signature of a second user;
• combine the first token, the fourth token, and the fifth token to produce a second key;
• determine whether the second key matches the first key;
• if the second key does not match the first key, communicate an alert indicating that the first key does not match the second key;
• and
• if the second key does match the first key, decrypt first, fourth, and fifth tokens to reproduce the file.