Method and Apparatus for Hiding Information in Communication protocol
First Claim
Patent Images
1. A method for hiding information in a communication protocol signal, comprising:
- receiving a first communication protocol signal conforming to a Session Initiation Protocol (SIP);
obtaining a communication data in the first communication protocol signal, the communication data comprising a plurality of predefined bit locations for hiding secret information;
performing an encoding operation on a secret information and the communication data, the encoding operation including extracting partial bit data from the communication data and generating an encoded information by performing an encryption on the secret information;
replacing the communication data comprising the plurality of predefined bit locations for hiding secret information with the communication data containing the encoded information to generate a second communication protocol signal; and
transmitting the second communication protocol signal.
1 Assignment
0 Petitions
Accused Products
Abstract
A method and apparatus for hiding information in a communication protocol signal are disclosed. The apparatus comprises a bit selection unit, an information encoding unit and an information decoding unit, wherein the bit selection unit selects suitable bits in the signal for hiding information, the information encoding unit encodes the information into the suitable bits selected by the bit selection unit, and the information decoding unit decodes the information encoded in the suitable bits.
-
Citations
16 Claims
-
1. A method for hiding information in a communication protocol signal, comprising:
-
receiving a first communication protocol signal conforming to a Session Initiation Protocol (SIP); obtaining a communication data in the first communication protocol signal, the communication data comprising a plurality of predefined bit locations for hiding secret information; performing an encoding operation on a secret information and the communication data, the encoding operation including extracting partial bit data from the communication data and generating an encoded information by performing an encryption on the secret information; replacing the communication data comprising the plurality of predefined bit locations for hiding secret information with the communication data containing the encoded information to generate a second communication protocol signal; and transmitting the second communication protocol signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. An apparatus for hiding information in a communication protocol signal, comprising:
a first computer for receiving a first communication protocol signal conforming to a Session Initiation Protocol (SIP), the first computer comprising; a bit selection unit for obtaining a communication data in the first communication protocol signal, the communication data comprising a plurality of predefined bit locations for hiding secret information; an information encoding unit for extracting partial bit data from the communication data, generating an encoded information by performing an encryption on the secret information, and replacing the communication data comprising the plurality of predefined bit locations for hiding secret information with the communication data containing the encoded information to generate a second communication protocol signal; and an output unit for outputting the second communication protocol signal. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
Specification