Mobile Originated Secure Message Transmission between a Subscriber Identity Module Application and a Cloud Server

A system for encrypting messages sent between an application installed on a SIM card and a server, comprising:

• a server comprising:
• a network interface configured to communicate with a plurality of mobile devices;
• a processing module comprising instructions configured to generate a keyset;
• to execute a level and type of encryption;
• to encrypt messages;
• and
• to execute a cryptographic algorithm;
• a memory module configured to store an Integrated Circuit Card Identifier value, a Mobile Station International Subscriber Directory Number values, an association between the ICCID value and the MSISDN value, a keyset, an association between the ICCID and the keyset, a level and type of encryption, and a cryptographic algorithm;
• wherein the network interface, processing module, and memory module are operably connected;
• a mobile device comprising:
• a mobile network interface configured to communicate with the server;
• a Subscriber Identity Module comprising an ICCID and an MSISDN;
• a SIM memory module configured to store the keyset, the level and type of encryption, and the cryptographic algorithm;
• and
• a SIM application installed on the SIM and configured to:
• execute instructions to use the keyset and cryptographic algorithm to encrypt and send encrypted messages;
• and
• execute instructions to use the keyset and cryptographic algorithm to decrypt received encrypted messages;
• wherein the SIM, the SIM application, the SIM memory module, and the mobile network interface are operably connected.

A method of sending an encrypted message from an application installed on a SIM card installed on a mobile device, the method comprising:

• sending, from the application installed on the SIM card, over a mobile network a provisioning message;
• receiving, at the mobile device, a keyset, wherein the keyset is configured to encrypt messages sent from an application installed on the SIM card;
• storing the keyset in a memory module on the mobile device;
• encrypting a message sent from the application using the keyset;
• and
• sending the encrypted message from the application installed on the SIM over a mobile network.

A mobile device configured to send and receive encrypted messages between an application installed on a SIM card installed on a mobile device and a server, the mobile device comprising:

• a Subscriber Identity Module comprising an ICCID and MSISDN;
• a SIM application installed on the SIM, wherein the SIM application is configured to use a keyset to encrypt a message prior to sending the message to a server;
• a memory module configured to store a keyset received from the server;
• and
• a network interface configured to communicate with the server to send the encrypted message, wherein the SIM, SIM application, memory module, and network interface are operably connected.