System and method for digital signature authentication of SMS messages
First Claim
1. A text messaging system for sending at least one text message to a wireless terminal equipment, the text messaging system comprising means for storing an equipment identification number assigned to said wireless terminal equipment, the text messaging system comprising:
- means for generating a digital signature based on said assigned equipment identification number; and
means for storing the digital signature in the at least one text message.
2 Assignments
0 Petitions
Accused Products
Abstract
The invention allows SMS messages authentication through the use of a digital signature computed with the International Mobile Equipment Identity (IMEI) as a key. Particularly, a text messaging system having the ability to send SMS messages to remotely managed wireless terminal equipment is disclosed and includes a system to generate such digital signature and to store it in available Information Element fields of the TP-User Data of the SMS message. Receiving wireless terminal equipment that are configured for IMEI-based signature security, still keep the option to process both SMS messages having the IMEI-based signature or not. Receiving wireless terminal equipment not enabled for IMEI-based signature security process the SMS normally.
146 Citations
15 Claims
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1. A text messaging system for sending at least one text message to a wireless terminal equipment, the text messaging system comprising means for storing an equipment identification number assigned to said wireless terminal equipment, the text messaging system comprising:
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means for generating a digital signature based on said assigned equipment identification number; and
means for storing the digital signature in the at least one text message. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for authenticating a text message send by a text messaging system to a wireless terminal equipment, the text messaging system comprising means for storing an equipment identification number assigned to the wireless terminal equipment and the text message comprising at least one unassigned data field, the method comprising the steps of:
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at the text messaging system;
generating a digital signature based on the assigned equipment identification number;
storing the digital signature in the at least one unassigned data field; and
sending the text message with the digital signature to the wireless terminal equipment;
at the wireless terminal equipment;
receiving the text message;
generating a personal digital signature based on a personal equipment identification number stored within the wireless terminal equipment; and
comparing the personal digital signature to the incoming digital signature carried within the received text message. - View Dependent Claims (12, 13, 14)
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15. In a digital communication network supporting Short Message Service (SMS) messages delivery to a plurality of mobile devices, each mobile device being identified by a unique International Mobile Equipment Identifier (IMEI), a method for enhancing the delivered SMS messages comprising the steps of:
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for each SMS message, generating a digital signature based on the unique International Mobile Equipment Identifier of the corresponding receiving mobile device;
storing the digital signature in a non-allocated Information Element Data (IED) field of the User Data Header (UDH) of the respective SMS message; and
sending the enhanced SMS message to the corresponding receiving mobile device.
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Specification