System and method for transmitting a secure message over a signaling network

A system, comprising:

• a delivery agent that provides a first request to a recipient mobile device for one or more attributes associated with a phone number from the recipient mobile device,
• wherein the delivery agent receives the one or more attributes from the recipient mobile device after providing the first request;
• wherein the delivery agent generates a key based on the one or more attributes received from the recipient mobile device,
• wherein the delivery agent receives an encrypted message for a recipient mobile device, wherein the encrypted message is encrypted based on the key,
• wherein the delivery agent provides a second request to the recipient mobile device for the one or more attributes of the recipient mobile device before delivering the encrypted message to the recipient mobile device,
• wherein the delivery agent receives the one or more attributes from the recipient mobile device after providing the second request,
• wherein the delivery agent regenerates the key based on the one or more attributes received from the recipient mobile device,
• wherein the delivery agent decrypts the encrypted message based on the regenerated key to generate a decrypted message, and
• wherein the delivery agent delivers the decrypted message to the recipient mobile device, wherein the decrypted message is an SMS message having a clear text format.