System and method for securing data communication between computers

A computer system comprising a first computer and a second computer communicatively connected to each other, the computer system configured for securing data communication between the first and second computers, the first and second computers configured for performing steps comprising:

• cooperatively executing, by the first and second computers, a first data communication instruction for communicating first data from the first computer to the second computer;
• generating a first session key by the first computer;
• encrypting, by the first computer, the first data using the first session key;
• encrypting, by the first computer, the first session key using a first public key, the first public key paired with a first private key, the first public-private key pair generated for the second computer by the first computer or second computer;
• sending the encrypted first data and the encrypted first session key from the first computer to the second computer;
• decrypting, by the second computer, the encrypted first session key using the first private key;
• decrypting, by the second computer, the encrypted first data using the decrypted first session key;
• and
• processing, by the second computer, the decrypted first data based on the first data communication instruction,
• wherein the first public key or first private key is encrypted and decrypted using a token session key generated by the first computer, the token session key communicated from the first computer to the second computer;
• wherein when the first public-private key pair is generated by the first computer, the first private key is encrypted by the first computer using the token session key and the encrypted first private key is communicated from first computer to the second computer, the encrypted first private key decrypted by the second computer using the token session key;
• and
• wherein when the first public-private key pair is generated by the second computer, the first public key is encrypted by the second computer using the token session key and the encrypted first public key is communicated from second computer to the first computer, the encrypted first public key decrypted by the first computer using the token session key.