Steganography ppt
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It has all details related to cyber security information hiding.It mainly focuses on steganography and its major details.The ppt also shows is applications.
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Steganography
The document provides an overview of steganography, including its definition, history, techniques, applications, and future scope. It discusses different types of steganography such as text, image, and audio steganography. For image steganography, it describes techniques such as LSB insertion and compares image and transform domain methods. It also provides examples of steganography tools and their usage for confidential communication and data protection.
Steganography ppt
This document provides an overview of steganography through:
1) Defining steganography and distinguishing it from cryptography by explaining how steganography aims to hide messages within innocent-looking carriers so the message's existence remains concealed.
2) Tracing the evolution of steganography from ancient techniques like invisible ink to modern digital methods.
3) Explaining how steganography embeds messages in carriers like text, images, audio and video and provides an example of hiding text in the least significant bits of image pixel values.
4) Detailing the steps to hide an image using steganography software.
Steganography presentation
Steganography is the art and science of hiding information by embedding messages within other harmless media so as not to arouse suspicion. It differs from cryptography in that the goal is to conceal the very existence of the message, not just its content. Common techniques include hiding data in the least significant bits of images, altering text formatting, and embedding signals in audio files like echoes. Detection methods involve looking for anomalies introduced by hidden data or disabling embedded data through compression or filtering. Steganography has applications in secure communication, copyright protection, and covert messaging.
SEMINAR ON staganography
The document summarizes a seminar presentation on steganography. It discusses the history of steganography from ancient Greece to modern digital techniques. It describes how steganography differs from cryptography in hiding information rather than encrypting it. The document outlines common steganography techniques like least significant bit insertion and the injection method. It provides examples of steganography applications for both legitimate uses like digital watermarking as well as illegitimate uses like corporate espionage. The presentation concludes that steganography can effectively hide sensitive information while cryptography provides additional security through encryption.
Steganography - The art of hiding data
This document provides an overview of steganography, including:
1) Steganography is the art of hiding information in plain sight so that the very existence of a hidden message is concealed. It works by embedding messages within images, audio, or other files.
2) Modern uses include digital watermarking to identify ownership, hiding sensitive files, and illegitimate uses like corporate espionage, terrorism, and child pornography.
3) Techniques include least significant bit insertion to replace bits in files, injection to directly embed messages, and generating new files from scratch. Detection methods like steganalysis aim to discover hidden information.
Steganography
This document provides an overview of steganography, the art and science of hidden writing. It defines steganography as communicating in a way that hides the existence of a message. The document then discusses various digital and analog steganography techniques, including embedding messages in images, audio, video and other file types. It also covers the use of machine identification codes in printers, text encoding, and security schemes used to improve steganographic robustness.
Steganography
This document provides an overview of steganography, which is the practice of hiding secret information within other non-secret digital files like images, audio, or video. The document discusses the history of steganography from ancient times using techniques like hidden tattoos or wax tablets, to its modern uses with digital files and tools. Advantages include secrecy between sender and receiver, while disadvantages include potential use by terrorists. The document contrasts steganography with cryptography, noting that steganography hides the existence of secret messages within other files, while cryptography encrypts messages but does not hide their existence.
Cryptography
A brief introduction to Crytography,the various types of crytography and the advantages and disadvantages associated to using the following tyes with some part of the RSA algorithm
Recommended
Steganography
The document provides an overview of steganography, including its definition, history, techniques, applications, and future scope. It discusses different types of steganography such as text, image, and audio steganography. For image steganography, it describes techniques such as LSB insertion and compares image and transform domain methods. It also provides examples of steganography tools and their usage for confidential communication and data protection.
Steganography ppt
This document provides an overview of steganography through:
1) Defining steganography and distinguishing it from cryptography by explaining how steganography aims to hide messages within innocent-looking carriers so the message's existence remains concealed.
2) Tracing the evolution of steganography from ancient techniques like invisible ink to modern digital methods.
3) Explaining how steganography embeds messages in carriers like text, images, audio and video and provides an example of hiding text in the least significant bits of image pixel values.
4) Detailing the steps to hide an image using steganography software.
Steganography presentation
Steganography is the art and science of hiding information by embedding messages within other harmless media so as not to arouse suspicion. It differs from cryptography in that the goal is to conceal the very existence of the message, not just its content. Common techniques include hiding data in the least significant bits of images, altering text formatting, and embedding signals in audio files like echoes. Detection methods involve looking for anomalies introduced by hidden data or disabling embedded data through compression or filtering. Steganography has applications in secure communication, copyright protection, and covert messaging.
SEMINAR ON staganography
The document summarizes a seminar presentation on steganography. It discusses the history of steganography from ancient Greece to modern digital techniques. It describes how steganography differs from cryptography in hiding information rather than encrypting it. The document outlines common steganography techniques like least significant bit insertion and the injection method. It provides examples of steganography applications for both legitimate uses like digital watermarking as well as illegitimate uses like corporate espionage. The presentation concludes that steganography can effectively hide sensitive information while cryptography provides additional security through encryption.
Steganography - The art of hiding data
This document provides an overview of steganography, including:
1) Steganography is the art of hiding information in plain sight so that the very existence of a hidden message is concealed. It works by embedding messages within images, audio, or other files.
2) Modern uses include digital watermarking to identify ownership, hiding sensitive files, and illegitimate uses like corporate espionage, terrorism, and child pornography.
3) Techniques include least significant bit insertion to replace bits in files, injection to directly embed messages, and generating new files from scratch. Detection methods like steganalysis aim to discover hidden information.
Steganography
This document provides an overview of steganography, the art and science of hidden writing. It defines steganography as communicating in a way that hides the existence of a message. The document then discusses various digital and analog steganography techniques, including embedding messages in images, audio, video and other file types. It also covers the use of machine identification codes in printers, text encoding, and security schemes used to improve steganographic robustness.
Steganography
This document provides an overview of steganography, which is the practice of hiding secret information within other non-secret digital files like images, audio, or video. The document discusses the history of steganography from ancient times using techniques like hidden tattoos or wax tablets, to its modern uses with digital files and tools. Advantages include secrecy between sender and receiver, while disadvantages include potential use by terrorists. The document contrasts steganography with cryptography, noting that steganography hides the existence of secret messages within other files, while cryptography encrypts messages but does not hide their existence.
Cryptography
A brief introduction to Crytography,the various types of crytography and the advantages and disadvantages associated to using the following tyes with some part of the RSA algorithm
Presentation On Steganography
Steganography is the practice of concealing a file, message, image, or video within another file, message, image, or video. The word steganography combines the Greek words steganos meaning "covered, concealed, or protected", and graphein meaning "writing".
The first recorded use of the term was in 1499 by Johannes Trithemius in his Steganographia, a treatise on cryptography and steganography, disguised as a book on magic. Generally, the hidden messages appear to be (or be part of) something else: images, articles, shopping lists, or some other cover text. For example, the hidden message may be in invisible ink between the visible lines of a private letter. Some implementations of steganography that lack a shared secret are forms of security through obscurity, whereas key-dependent steganographic schemes adhere to Kerckhoffs's principle.
The advantage of steganography over cryptography alone is that the intended secret message does not attract attention to itself as an object of scrutiny. Plainly visible encrypted messages—no matter how unbreakable—arouse interest, and may in themselves be incriminating in countries where encryption is illegal.Thus, whereas cryptography is the practice of protecting the contents of a message alone, steganography is concerned with concealing the fact that a secret message is being sent, as well as concealing the contents of the message.
Steganography includes the concealment of information within computer files. In digital steganography, electronic communications may include steganographic coding inside of a transport layer, such as a document file, image file, program or protocol. Media files are ideal for steganographic transmission because of their large size. For example, a sender might start with an innocuous image file and adjust the color of every 100th pixel to correspond to a letter in the alphabet, a change so subtle that someone not specifically looking for it is unlikely to notice it.
Steganography
This document discusses steganography, which is a method of hiding secret information within other information. It begins by providing background on the rise of the internet and the need for information security. It then explains steganography and how it differs from cryptography by not only encrypting messages but hiding their very existence. The document outlines various types of steganography, including techniques for hiding messages in text, audio, images, and video files. It notes some advantages and disadvantages of steganography and discusses the latest research on improving steganography detection.
About Steganography
Steganography is the process of hiding secret information within ordinary media so that the very existence of the message is concealed. It works by embedding messages within images, videos, or audio files. Various techniques exist such as least significant bit insertion and algorithms/transformations. Tools allow hiding data in file formats like JPEG, PNG, and MP4. Detection methods include visual analysis and statistical steganalysis to analyze for subtle changes from hidden data. Steganography has uses for covert communication but also intellectual property and digital rights management.
Steganography
Steganography is the art and science of hiding messages within other non-secret text, images, or other files. It works by encoding hidden messages within carrier files like images, videos, or documents in a way that avoids attracting attention to the message itself. Common techniques for steganography include least significant bit insertion and masking and filtering. While it can be used for privacy, it has also been used by hackers, terrorists, and criminals for illegal purposes.
Steganography presentation
This document provides an overview of steganography presented by four students. It defines steganography as hiding secret communications such that others do not know of the message's existence. The document outlines the history of steganography, modern applications, types of techniques including LSB substitution and transform domains, characteristics, classifications, uses in text, images, and networks, and challenges around detection. It concludes that steganography allows covert transmission of secrets but also poses challenges for network monitoring.
steganography
Steganography is the art of hiding secret messages within other non-secret text, images, or other files. It works by embedding messages into the redundant or insignificant parts of cover files, like images or audio files. Modern steganography techniques hide data by making subtle alterations to things like the least significant bits of pixels in an image or by modifying phases in an audio file. Steganography provides a way to communicate covertly and anonymously, but detection is possible through statistical analysis or if the steganography algorithm is known. Steganography has various applications but is also used by criminals and terrorists seeking anonymity.
Image steganography
Image steganography is the art of hiding information within digital images. The document discusses various techniques for image steganography including LSB (least significant bit) and DCT (discrete cosine transform). LSB is a simple spatial domain technique that replaces the least significant bits of image pixels with bits of a secret message. DCT operates in the frequency domain by transforming image blocks and hiding data in the mid-frequency DCT coefficients. The document compares the advantages and disadvantages of these techniques, and discusses their applications for hiding private information or digital watermarking. Metrics for analyzing steganography systems like bit error rate, mean square error, and peak signal to noise ratio are also introduced.
Steganography
This document provides an overview of steganography. It discusses how steganography hides messages within carriers so that the message is concealed. The document then discusses the history of steganography dating back to ancient Greece. It also discusses modern uses of steganography during the Cold War and by terrorist groups. The document outlines the objectives of the study which are to provide security during message transmission. It then discusses steganography techniques like LSB substitution and how LSB works to embed messages in images. Snapshots of the designed steganography application are provided along with results discussing the efficiency of the LSB algorithm used. The document concludes by discussing future work to improve the technique.
Image Steganography using LSB
This document discusses steganography and image steganography techniques. It defines steganography as hiding information within other information to avoid detection. Image steganography is described as hiding data in digital images using techniques like least significant bit encoding. The document outlines the LSB algorithm, which replaces the least significant bits of image pixel values with bits of the hidden message. Examples are given to illustrate how short messages can be concealed in an image using this method.
Encryption ppt
Encryption is the process of encoding messages or information so that only authorized parties can read it. There are two main types of encryption: symmetric key encryption which uses the same key to encrypt and decrypt, and asymmetric key encryption which uses a public key to encrypt and a private key to decrypt. While symmetric encryption is faster, asymmetric encryption is more secure since it does not require sharing the same key. Encryption is widely used to provide authentication, privacy, integrity, and accountability of data.
Introduction to Cryptography
Cryptography is the practice of securing communication and information by converting plaintext into ciphertext. The document provides an introduction to cryptography including its history from ancient times to the present. It discusses terminology like plaintext, encryption, ciphertext, decryption, and keys. Symmetric key cryptography uses a single key for encryption and decryption while asymmetric key cryptography uses two different keys. Examples of symmetric methods are DES, 3DES, AES, and RC4, while RSA is a common asymmetric method. Applications of cryptography include ATMs, email passwords, e-payments, e-commerce, electronic voting, defense services, securing data, and access control.
Steganography and watermarking
This document provides an overview of steganography and watermarking techniques for hiding information in digital media. It defines steganography as "covered writing" involving hiding secret messages within other digital files like images, audio, or video. Common steganography methods embed data in the least significant bits of pixels or audio samples. Watermarking differs in embedding identifying marks that are robust to modifications and aim to protect copyrights. The document outlines various media and techniques for each, applications, advantages and limitations of both steganography and watermarking.
Steganography
Steganography is the art and science of hiding messages within other carriers or cover files so that the existence of the message is concealed. Some common carriers used for steganography include text, images, audio, and video files. The document discusses the history of steganography and how it differs from cryptography and digital watermarking. It also describes various techniques for hiding messages in digital files such as least significant bit insertion in images and modifying text files by capitalizing random letters.
Data Hiding Techniques
This document discusses various techniques for hiding data in the Microsoft Windows operating system. It covers logical techniques like assigning hidden and system attributes, changing file extensions and icons. It also discusses more advanced techniques like using alternate data streams that allow hiding data in files, and using class identifiers (CLSIDs) meant for special folders for regular folders to disguise hidden data. The document provides an overview of the NTFS file system used by Windows and how its alternate data stream feature can be exploited for data hiding. It also recommends some tools that can be used to detect hidden data streams.
Cryptography.ppt
This document provides an overview of cryptography. It defines cryptography as the science of securing messages from attacks. It discusses basic cryptography terms like plain text, cipher text, encryption, decryption, and keys. It describes symmetric key cryptography, where the same key is used for encryption and decryption, and asymmetric key cryptography, which uses different public and private keys. It also covers traditional cipher techniques like substitution and transposition ciphers. The document concludes by listing some applications of cryptography like e-commerce, secure data, and access control.
PPT steganography
This document discusses steganography, which is hiding messages within seemingly harmless carriers or covers so that no one apart from the intended recipient knows a message has been sent. It provides examples of steganography in text, images, and audio, as well as methods used for each. These include techniques like least significant bit insertion and temporal sampling rates. The document also covers steganalysis, which aims to detect hidden communications by analyzing changes in the statistical properties of covers.
Steganography in images
This document summarizes steganography techniques for hiding data in digital images. It discusses how steganography hides secret messages in cover images such that a third party is unaware of the hidden data. The document focuses on the least significant bit (LSB) technique, where the LSB of image pixel values are replaced with bits of the secret message. It provides algorithms for embedding data into and extracting data from images using LSB matching. The document also discusses using gray scale images and separating images into RGB layers to increase embedding capacity while maintaining image quality.
Steganography
Steganography (US Listeni/ˌstɛ.ɡʌnˈɔː.ɡrʌ.fi/, UK /ˌstɛɡ.ənˈɒɡ.rə.fi/) is the practice of concealing a file, message, image, or video within another file, message, image, or video. The word steganography combines the Greek words steganos (στεγανός), meaning "covered, concealed, or protected", and graphein (γράφειν) meaning "writing"
Steganalysis ppt
This document discusses different types of steganalysis algorithms used to detect hidden messages embedded in digital files such as images, audio, and video. It describes specific steganalysis algorithms designed for certain embedding techniques as well as generic algorithms that can be applied broadly. Specific image steganalysis algorithms are discussed for formats like GIF, BMP, and JPEG. Audio steganalysis targets techniques like low-bit encoding, phase coding, spread spectrum coding, and echo hiding. Video steganalysis uses a framework with watermark attack and pattern recognition stages.
Chapter1 2
The document provides an overview of digital watermarking. It defines watermarking as imperceptibly altering a work to embed a message about the work. The document outlines the history of watermarking and discusses its applications, including owner identification, proof of ownership, broadcast monitoring, transaction tracking, and content authentication. It also compares watermarking to other techniques like cryptography and discusses the importance of digital watermarking for copyright protection in the digital age.
Steganography Project
This document provides an overview of steganography. It discusses how steganography hides messages within carriers so that the message is concealed. The document then discusses the history of steganography dating back to ancient Greece. It also discusses modern uses of steganography during the Cold War and by terrorist groups. The document outlines the objectives of the study which are to provide security during message transmission. It then discusses steganography techniques like the LSB algorithm and provides snapshots of its implementation. Finally, it discusses the results of using LSB steganography and concludes with possibilities for further enhancement.
Steganography flooding
Steganography is the practice of concealing a file, message, image, or video within another file, message, image, or video. The goal is to hide messages in such a way that no one apart from the intended recipient knows about the message. Various media can be used for steganography including text, images, audio, and digital watermarking. Modern techniques allow hidden data to be embedded into files like images and audio in ways that are almost impossible to detect without the correct software and password. Steganography is commonly used by terrorists and criminals to covertly plan activities and share instructions.
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Presentation On Steganography
Steganography is the practice of concealing a file, message, image, or video within another file, message, image, or video. The word steganography combines the Greek words steganos meaning "covered, concealed, or protected", and graphein meaning "writing".
The first recorded use of the term was in 1499 by Johannes Trithemius in his Steganographia, a treatise on cryptography and steganography, disguised as a book on magic. Generally, the hidden messages appear to be (or be part of) something else: images, articles, shopping lists, or some other cover text. For example, the hidden message may be in invisible ink between the visible lines of a private letter. Some implementations of steganography that lack a shared secret are forms of security through obscurity, whereas key-dependent steganographic schemes adhere to Kerckhoffs's principle.
The advantage of steganography over cryptography alone is that the intended secret message does not attract attention to itself as an object of scrutiny. Plainly visible encrypted messages—no matter how unbreakable—arouse interest, and may in themselves be incriminating in countries where encryption is illegal.Thus, whereas cryptography is the practice of protecting the contents of a message alone, steganography is concerned with concealing the fact that a secret message is being sent, as well as concealing the contents of the message.
Steganography includes the concealment of information within computer files. In digital steganography, electronic communications may include steganographic coding inside of a transport layer, such as a document file, image file, program or protocol. Media files are ideal for steganographic transmission because of their large size. For example, a sender might start with an innocuous image file and adjust the color of every 100th pixel to correspond to a letter in the alphabet, a change so subtle that someone not specifically looking for it is unlikely to notice it.
Steganography
This document discusses steganography, which is a method of hiding secret information within other information. It begins by providing background on the rise of the internet and the need for information security. It then explains steganography and how it differs from cryptography by not only encrypting messages but hiding their very existence. The document outlines various types of steganography, including techniques for hiding messages in text, audio, images, and video files. It notes some advantages and disadvantages of steganography and discusses the latest research on improving steganography detection.
About Steganography
Steganography is the process of hiding secret information within ordinary media so that the very existence of the message is concealed. It works by embedding messages within images, videos, or audio files. Various techniques exist such as least significant bit insertion and algorithms/transformations. Tools allow hiding data in file formats like JPEG, PNG, and MP4. Detection methods include visual analysis and statistical steganalysis to analyze for subtle changes from hidden data. Steganography has uses for covert communication but also intellectual property and digital rights management.
Steganography
Steganography is the art and science of hiding messages within other non-secret text, images, or other files. It works by encoding hidden messages within carrier files like images, videos, or documents in a way that avoids attracting attention to the message itself. Common techniques for steganography include least significant bit insertion and masking and filtering. While it can be used for privacy, it has also been used by hackers, terrorists, and criminals for illegal purposes.
Steganography presentation
This document provides an overview of steganography presented by four students. It defines steganography as hiding secret communications such that others do not know of the message's existence. The document outlines the history of steganography, modern applications, types of techniques including LSB substitution and transform domains, characteristics, classifications, uses in text, images, and networks, and challenges around detection. It concludes that steganography allows covert transmission of secrets but also poses challenges for network monitoring.
steganography
Steganography is the art of hiding secret messages within other non-secret text, images, or other files. It works by embedding messages into the redundant or insignificant parts of cover files, like images or audio files. Modern steganography techniques hide data by making subtle alterations to things like the least significant bits of pixels in an image or by modifying phases in an audio file. Steganography provides a way to communicate covertly and anonymously, but detection is possible through statistical analysis or if the steganography algorithm is known. Steganography has various applications but is also used by criminals and terrorists seeking anonymity.
Image steganography
Image steganography is the art of hiding information within digital images. The document discusses various techniques for image steganography including LSB (least significant bit) and DCT (discrete cosine transform). LSB is a simple spatial domain technique that replaces the least significant bits of image pixels with bits of a secret message. DCT operates in the frequency domain by transforming image blocks and hiding data in the mid-frequency DCT coefficients. The document compares the advantages and disadvantages of these techniques, and discusses their applications for hiding private information or digital watermarking. Metrics for analyzing steganography systems like bit error rate, mean square error, and peak signal to noise ratio are also introduced.
Steganography
This document provides an overview of steganography. It discusses how steganography hides messages within carriers so that the message is concealed. The document then discusses the history of steganography dating back to ancient Greece. It also discusses modern uses of steganography during the Cold War and by terrorist groups. The document outlines the objectives of the study which are to provide security during message transmission. It then discusses steganography techniques like LSB substitution and how LSB works to embed messages in images. Snapshots of the designed steganography application are provided along with results discussing the efficiency of the LSB algorithm used. The document concludes by discussing future work to improve the technique.
Image Steganography using LSB
This document discusses steganography and image steganography techniques. It defines steganography as hiding information within other information to avoid detection. Image steganography is described as hiding data in digital images using techniques like least significant bit encoding. The document outlines the LSB algorithm, which replaces the least significant bits of image pixel values with bits of the hidden message. Examples are given to illustrate how short messages can be concealed in an image using this method.
Encryption ppt
Encryption is the process of encoding messages or information so that only authorized parties can read it. There are two main types of encryption: symmetric key encryption which uses the same key to encrypt and decrypt, and asymmetric key encryption which uses a public key to encrypt and a private key to decrypt. While symmetric encryption is faster, asymmetric encryption is more secure since it does not require sharing the same key. Encryption is widely used to provide authentication, privacy, integrity, and accountability of data.
Introduction to Cryptography
Cryptography is the practice of securing communication and information by converting plaintext into ciphertext. The document provides an introduction to cryptography including its history from ancient times to the present. It discusses terminology like plaintext, encryption, ciphertext, decryption, and keys. Symmetric key cryptography uses a single key for encryption and decryption while asymmetric key cryptography uses two different keys. Examples of symmetric methods are DES, 3DES, AES, and RC4, while RSA is a common asymmetric method. Applications of cryptography include ATMs, email passwords, e-payments, e-commerce, electronic voting, defense services, securing data, and access control.
Steganography and watermarking
This document provides an overview of steganography and watermarking techniques for hiding information in digital media. It defines steganography as "covered writing" involving hiding secret messages within other digital files like images, audio, or video. Common steganography methods embed data in the least significant bits of pixels or audio samples. Watermarking differs in embedding identifying marks that are robust to modifications and aim to protect copyrights. The document outlines various media and techniques for each, applications, advantages and limitations of both steganography and watermarking.
Steganography
Steganography is the art and science of hiding messages within other carriers or cover files so that the existence of the message is concealed. Some common carriers used for steganography include text, images, audio, and video files. The document discusses the history of steganography and how it differs from cryptography and digital watermarking. It also describes various techniques for hiding messages in digital files such as least significant bit insertion in images and modifying text files by capitalizing random letters.
Data Hiding Techniques
This document discusses various techniques for hiding data in the Microsoft Windows operating system. It covers logical techniques like assigning hidden and system attributes, changing file extensions and icons. It also discusses more advanced techniques like using alternate data streams that allow hiding data in files, and using class identifiers (CLSIDs) meant for special folders for regular folders to disguise hidden data. The document provides an overview of the NTFS file system used by Windows and how its alternate data stream feature can be exploited for data hiding. It also recommends some tools that can be used to detect hidden data streams.
Cryptography.ppt
This document provides an overview of cryptography. It defines cryptography as the science of securing messages from attacks. It discusses basic cryptography terms like plain text, cipher text, encryption, decryption, and keys. It describes symmetric key cryptography, where the same key is used for encryption and decryption, and asymmetric key cryptography, which uses different public and private keys. It also covers traditional cipher techniques like substitution and transposition ciphers. The document concludes by listing some applications of cryptography like e-commerce, secure data, and access control.
PPT steganography
This document discusses steganography, which is hiding messages within seemingly harmless carriers or covers so that no one apart from the intended recipient knows a message has been sent. It provides examples of steganography in text, images, and audio, as well as methods used for each. These include techniques like least significant bit insertion and temporal sampling rates. The document also covers steganalysis, which aims to detect hidden communications by analyzing changes in the statistical properties of covers.
Steganography in images
This document summarizes steganography techniques for hiding data in digital images. It discusses how steganography hides secret messages in cover images such that a third party is unaware of the hidden data. The document focuses on the least significant bit (LSB) technique, where the LSB of image pixel values are replaced with bits of the secret message. It provides algorithms for embedding data into and extracting data from images using LSB matching. The document also discusses using gray scale images and separating images into RGB layers to increase embedding capacity while maintaining image quality.
Steganography
Steganography (US Listeni/ˌstɛ.ɡʌnˈɔː.ɡrʌ.fi/, UK /ˌstɛɡ.ənˈɒɡ.rə.fi/) is the practice of concealing a file, message, image, or video within another file, message, image, or video. The word steganography combines the Greek words steganos (στεγανός), meaning "covered, concealed, or protected", and graphein (γράφειν) meaning "writing"
Steganalysis ppt
This document discusses different types of steganalysis algorithms used to detect hidden messages embedded in digital files such as images, audio, and video. It describes specific steganalysis algorithms designed for certain embedding techniques as well as generic algorithms that can be applied broadly. Specific image steganalysis algorithms are discussed for formats like GIF, BMP, and JPEG. Audio steganalysis targets techniques like low-bit encoding, phase coding, spread spectrum coding, and echo hiding. Video steganalysis uses a framework with watermark attack and pattern recognition stages.
Chapter1 2
The document provides an overview of digital watermarking. It defines watermarking as imperceptibly altering a work to embed a message about the work. The document outlines the history of watermarking and discusses its applications, including owner identification, proof of ownership, broadcast monitoring, transaction tracking, and content authentication. It also compares watermarking to other techniques like cryptography and discusses the importance of digital watermarking for copyright protection in the digital age.
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Steganography Project
This document provides an overview of steganography. It discusses how steganography hides messages within carriers so that the message is concealed. The document then discusses the history of steganography dating back to ancient Greece. It also discusses modern uses of steganography during the Cold War and by terrorist groups. The document outlines the objectives of the study which are to provide security during message transmission. It then discusses steganography techniques like the LSB algorithm and provides snapshots of its implementation. Finally, it discusses the results of using LSB steganography and concludes with possibilities for further enhancement.
Steganography flooding
Steganography is the practice of concealing a file, message, image, or video within another file, message, image, or video. The goal is to hide messages in such a way that no one apart from the intended recipient knows about the message. Various media can be used for steganography including text, images, audio, and digital watermarking. Modern techniques allow hidden data to be embedded into files like images and audio in ways that are almost impossible to detect without the correct software and password. Steganography is commonly used by terrorists and criminals to covertly plan activities and share instructions.
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Art of Steganography
Steganography is the art of hiding secret messages within other cover messages. It works by embedding the secret message in a way that is imperceptible to anyone except the sender and recipient. Historically, secret messages were hidden on messengers' heads or in invisible inks or wax tablets. Steganography differs from cryptography in that it conceals the existence of the message rather than scrambling its contents. Common steganography techniques include least significant bit insertion into images, text, audio, and other file types. Steganalysis aims to detect the presence of hidden messages through statistical analysis, file properties, or signatures of steganography tools. Manual inspection with a hex editor can also reveal clues that steganography was used
Steganography ppt
Steganography is the practice of concealing a file, message, image, or video within another file, message, image, or video. The concealed message is hidden in a way that prevents detection. It differs from cryptography, which encrypts a message to hide its meaning but not its existence. Modern steganography techniques include least significant bit insertion to hide messages in image files with minimal distortion. Detection of concealed messages is called steganalysis and involves visual or statistical analysis to reveal alterations caused by message embedding.
Cox and kings project
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- 1. CYBER SECURITY BITS EDU CAMPUS COMPUTER SCIENCE DEPARTMENT
- 2. TOPIC: STEGANOGRAPHY Prepared by: Shruti Ghelani-140050107031 Taha Malampattiwala-140050107052 Jinal Mayavanshi-140050107056
- 3. INFORMATION HIDING • Information Hiding is a branch of computer science that deals with concealing the existence of a message • It is related to cryptography whose intent is to render messages unreadable except by the intended recipients • It employs technologies from numerous science disciplines: • Digital Signal Processing (Images, Audio, Video) • Cryptography • Information TheoryCoding Theory • Data Compression • Human Visual/Auditory perception • There are four primary sub-disciplines of Information Hiding • Steganography • Watermarking • Covert Channels • Anonymity
- 4. • Alice and Bob • Classical names given to the parties wishing to communicate • Sometimes, you may have a Carol and a Dave • Eve, an adversary, can listen to but not modify or forge a message • (think passive eavesdropping) • Wendy the Warden, another adversary, can monitor, modify, or forge a message • A passive warden simply listens (like Eve) • An active warden may modify a message • A malicious warden may forge a fake message BASIC TERMINOLOGY
- 5. What is Steganography? def’n: the art and science of hiding information by embedding it in some other data. cryptography - render message unintelligible steganography - conceal the existence of the message
- 6. • Steganography literally means “covered writing” • A stegosaurus has a covered back • Steganography’s primary goal is to hide data within some other data such that the hidden data cannot be detected even if it is being sought • Secondary goals: • prevent extraction from the cover file without destroying the cover • prevent destruction of the stego-message without destroying the cover • Most frequently, steganography is applied to images, but many other data or file types are possible • Audio • Video • Text • Executable programs
- 7. The cover provides a host for transporting the hidden info. info embed -file extract info
- 8. Digital Steganography • HTML message as cover? • computer program as cover? • network protocol headers • white space in text • unused space in buffer • least significant bits of image • slight distortion in sound file • “Easter eggs”
- 9. Steganography in Images Two types of compression: • lossless (gif) • lossy (jpeg) Sometimes concealed message inserted as a comment. Sometimes the accuracy of the image is sacrificed slightly. Common Tools • StegoDOS • White Noise Storm • S-tools • Outguess • Steghide
- 10. APPLICATIONS OF INFORMATION HIDING• Covert military communications • Covert police communications • Criminals have learned that police are nearby when they hear encrypted communications, so they abate their activity for the moment • A steganographic system would prevent this detection • Digital Rights Management – protecting intellectual property such as images, music, electronic books, etc. • Embedding textual data in medical images would better ensure that the picture belongs to a particular patient • This technique could apply to personal pictures, sounds, and movies • Tamper proofing – ensuring a data file has not been changed • Communicating in an oppressive country w/o free speech
- 11. NEFARIOUS APPLICATIONS OF INFORMATION HIDING • You won’t find these applications in the book • money laundering • drug running • child pornography • spying (good or bad depending upon which side you’re on!) • terrorism • Unfortunately, these uses are also possible • The technology itself isn’t bad, but like many things, it can be (and is) abused • Since there are nefarious uses, law enforcement and the military is also interested in understanding hiding techniques and detecting hidden data • There are some projects right here at UTSA that have done research for the Air Force
- 12. STEGANALYSIS • Steganalysis is the detection of data that has been hidden • It is a cat and mouse game – as one group of researchers come up with better ways to hide stuff, another group figures out how to detect it or perhaps just destroy it • In the summer course last year, one student thought he had a hiding system that was undetectable • His lab partner wrote a statistical analysis program that exposed the hidden message • The first student modified his program to defeat the attack • His lab partner modified his analyzer and still found the message
- 13. THANKYOU.