System and method for performing secure communications

A method of sending secure communications at a first secure communications terminal having a processor and a memory operably connected to the processor, the method comprising:

• maintaining an association with a first client account;
• receiving, from a second client account, a previous message;
• extracting from the previous message a previous shared key and a previous shared key identifier previously generated by the second client account;
• generating a message key and encrypting a message content using the message key;
• encrypting the message key using the previous shared key;
• combining the encrypted message key, the encrypted message content and the previous shared key identifier to form a new message;
• and
• transmitting the new message to a second secure communications terminal associated with the second client account.

A secure communications terminal, comprising:

• a processor operably connected to a memory and communications interface;
• the processor configured to:
• maintain an association with a first client account;
• receive, from a second client account, a previous message;
• extract from the previous message a previous shared key and a previous shared key identifier previously generated by the second client account;
• generate a message key and encrypt a message content using the message key;
• encrypt the message key using the previous shared key;
• combine the encrypted message key, the encrypted message content and the previous shared key identifier to form a new message;
• and
• transmit the new message to a second secure communications terminal associated with the second client account.