29-10-2010, 02:54 PM
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steganography full report
1. Introduction
Digital multimedia data provides a robust and easy editing and modifying of data. The data can be delivered over computer networks with little to no errors and often without interference.
Unfortunately, digital media distribution raises a concern for digital content owners. Digital data can be copied without any loss in quality and content. This poses a big problem for the protection of intellectual property rights of copyright owners. Watermarking is a solution to the problem. It can be defined as embedding digital data, such as information about the owner, recipient, and access level, without being detectable in the host multimedia data.
Steganography relies on hiding covert message in unsuspected multimedia data and is generally used in secret communication between acknowledged parties. Steganography is a method of encryption that hides data among the bits of a cover file, such as a graphic or an audio file. The technique replaces unused or insignificant bits with the secret data. Steganography is not as robust to attacks since the embedded data is vulnerable to destruction.
Watermarking has the feature of robustness against attacks. Even if the existence and method of embedding the data is known, it may be difficult to destroy the hidden data.
Data hiding and data embedding can be classified as methods between steganography and watermarking.
steganography full report
1. Introduction
Digital multimedia data provides a robust and easy editing and modifying of data. The data can be delivered over computer networks with little to no errors and often without interference.
Unfortunately, digital media distribution raises a concern for digital content owners. Digital data can be copied without any loss in quality and content. This poses a big problem for the protection of intellectual property rights of copyright owners. Watermarking is a solution to the problem. It can be defined as embedding digital data, such as information about the owner, recipient, and access level, without being detectable in the host multimedia data.
Steganography relies on hiding covert message in unsuspected multimedia data and is generally used in secret communication between acknowledged parties. Steganography is a method of encryption that hides data among the bits of a cover file, such as a graphic or an audio file. The technique replaces unused or insignificant bits with the secret data. Steganography is not as robust to attacks since the embedded data is vulnerable to destruction.
Watermarking has the feature of robustness against attacks. Even if the existence and method of embedding the data is known, it may be difficult to destroy the hidden data.
Data hiding and data embedding can be classified as methods between steganography and watermarking.
