Research Paper On Audio Steganography

Steganography in the context of digital content piracy serves primarily as a method to track where digital assets are moving or who is receiving them. It can be a good solution for distribution of a small number of copies but becomes less effective when distributing on a wide basis. In order for it to be effective a content provider needs to recover the content by means of the unauthorized channel and examine the indicator marked on the copy. This is cumbersome for wide distribution but can be used on a broad basis such as by region. Region coding is used with many DVD releases for example but can also be considered a type of DRM (Andrew,

During this literature review, I will be explaining the increase in cyber crimes over recent years and the social affects this has in current society. Furthermore, this literature review will also focus on the topic of digital forensics and the problems that investigators have against the ever growing number of cyber crimes. However, the main part of this literature review is to discuss the topic of Steganography and how this is used in the world of cyber crime for malicious intent. This will lead to the analyses of process it takes to use steganography and to critically evaluate the methods that are already in use for hiding information using steganography and also to detect if Steganography has been used on an image.

steganography. Steganography is the practice of concealing a message within another. Used by the greeks this is considered the first attempt at encryption. This is not treated as a proper method of cryptography because there is no manipulation of data, but the purpose

Designing and embedding a watermark for VoIP is the main goal of this paper, A new model is introduced and characterized by high robustness, high security and must be non-perceptual. The watermarking model is suitable for real-time service and supports the needs of embedding the watermark into the traffic of VoIP and its extraction additionally this model offers authentication and integrity. The model based on digital watermarking and steganography. Another factor was taken in consideration; the amount of data used and its influence on the voice quality of service.

Steganography is an ulterior, and lesser-known approach to private communication. Steganographic applications work by taking in three things: a cover work; this could be a picture, an audio file, a video file, etc., a message to be embedded, and a stego key; we don’t always use one but if we do it is much like an encryption key. Steganography applications will then embed the message into the cover work. This is most commonly performed using a method known as LSB embedding, which I will explain in detail.

Cryptography and Steganography is too used to secure communication. According to dictionary.com: Steganography is: “Hiding a secret message within a larger one in such a way that others cannot discern the presence or contents of the hidden message” and Cryptography is “The process or skill of communicating in, or deciphering secret writing or ciphers [2].”

Dead files by dead accounts may not be removed without the cooperation of the corresponding users. In the paper “Steganographic Schemes for File System and B-Tree” [3], they have introduced StegFD, a practical scheme to implement a steganographic file system in which a plausible deniability to owners of protected files is offered. StegFD hides the selected files in a file system securely in such a way that, an attacker will not be able to trace their existence, even if the attacker has full knowledge of the hardware and software and data structures of the file system .They have also proposed two schemes for implementing Steganographic B-trees in a StegFD volume. In paper “A Multi-User Steganographic File System on Untrusted Shared Storage” [4] the threat to steganographic file systems (StegFS) is described which arises when the storage system is untrusted and is shared by multiple users. In such cases, the attacker could obtain multiple snapshots of the storage content and analyze them to deduce the existence of secret user data. To solve this problem, they have introduced a Dummy-Relocatable Steganographic (DRSteg) file system. It employs new techniques to share and relocate dummy data at

Moreover, it is feasible to utilize the relation between two or more different network protocols to enable secret communication. These applications fall under the term inter-protocol steganography. [34]

The signal gets amplified, filtered and then get digitised. The digitised data is fed into the decoder.

in our daily life. To conclude, privacy and personal security issues are the results of

Cryptography is the science of writing and deciphering secret messages. One can encrypt a message or plain-text by using a specific parameter or key to create a coded message or cipher-text. Depending on the encryption method used, the encryption algorithm may be as long as the message or shorter than the message. Encryption is used to secure channels of communication on the Internet, protect data in ATM’s, cell phones, and much more. Cryptanalysis is the procedures taken to decipher a cipher-text. The main focus of cryptanalysis is to interpret secrets during times of war, since, knowing what the enemy is thinking and doing gives a great advantage. This article will focus on the brief history of cryptography and the mathematics behind it.

It is the method of protecting information by encrypting it into unreadable format. And then we can share decoding technique that can be used for decoding technique to the requested use who wants to see the original information, so we can prevent this information from unwanted users to see it. But the problem is, the techniques which we are used getting more complex.

Here are two ways to encrypt the voice signal: digital and analogue encryptions. In case of digital encryption, at first the analog signal must be digitized. The resulting signal is compressed to produce stream of bits at an adequate bit rate. Then this stream is encrypted and transferred by channel. The analogue encryption, is also known as “voice scrambling” or “speech scrambling.” This way operates on the samples of voice themselves without the need for digitization and compression. The purpose of voice encryption is to convert the voice signal from the original form into unintelligible voice signal, making it difficult to decrypt this signal when the key is unknown. Note that this chapter will use “Voice” and “Speech” interchangeably.

For information to be private and secure, encryption is used. A piece of information can be encrypted by changing each of the characters in the data to something different. The encrypted information can then be decrypted to find out the original information. It is important for information to be encrypted so that only the person that has sent and the person receiving the information can see it. Without

new technique has been introduced which is the hybrid of encryption and wavelet-based ECG steganography technique .