Three Level Security System Using Image Based Aunthentication
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This document describes a three-level security system using image-based authentication. It proposes using a sequence of click points on a series of images for login authentication. This adds a second factor of authentication using a personal handheld device. It aims to provide stronger security than text passwords alone by combining passwords, images, and device authentication. The system has three security levels that incorporate different authentication methods such as usernames, color patterns, image recognition, optical codes and character buttons.
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Three Level Security System Using Image Based Aunthentication
This document describes a three-level security system using image-based authentication. It proposes using a sequence of click points on a series of images for login authentication. This adds a second factor of authentication using a personal handheld device. It aims to provide stronger security than text passwords alone by combining passwords, images, and device authentication. The system has three security levels that incorporate different authentication methods like color patterns, image axis identification, and optical character recognition.
Image Based Authentication System
This document outlines a minor project on an Image Based Authentication System (IBAS) undertaken by three computer science students - Pratishtha Singh, Prince Pranav, and Vivek Singh. The project aims to provide high security web login using randomly generated questions based on images to authenticate users. It details the objective, scope, requirements, design, implementation plan, and specifications for the IBAS project being developed for the Computer Science department at NRI Institute of Information Science & Technology, Bhopal.
Graphical password authentication
This document discusses authentication methods and focuses on graphical passwords. It begins with an overview of common authentication methods like text passwords, tokens, and biometrics. It then discusses the drawbacks of text passwords and introduces graphical passwords as an alternative. The document surveys recall-based and recognition-based graphical password techniques and provides examples like Draw-A-Secret and Passfaces. It concludes by noting the advantages of graphical passwords in usability and security but also disadvantages like longer login times and storage requirements.
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 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 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.
Image based authentication
Image-based authentication (IBA) uses a set of user-selected images rather than a password for authentication. The IBA system displays an image set including key images mixed with other images. The user is authenticated by correctly identifying their key images. The document discusses IBA in detail, including potential vulnerabilities and methods to counter threats like observation attacks, brute force attacks, and frequency analysis attacks. It also covers the use of CAPTCHAs to distinguish humans and machines.
graphical password authentication
The document discusses and compares various authentication methods, including recognition-based, recall-based, and graphical password techniques. It provides an overview of common techniques such as Dhamija and Perrig's picture selection scheme, Sobrado and Birget's pass-object selection scheme, and Jermyn et al.'s Draw-A-Secret scheme. While graphical passwords may be easier for users to remember than text passwords, they have limitations such as taking longer to create and register, requiring more storage space, and not being very mature yet compared to traditional text-based passwords. The document evaluates the security and usability of different authentication methods.
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Three Level Security System Using Image Based Aunthentication
This document describes a three-level security system using image-based authentication. It proposes using a sequence of click points on a series of images for login authentication. This adds a second factor of authentication using a personal handheld device. It aims to provide stronger security than text passwords alone by combining passwords, images, and device authentication. The system has three security levels that incorporate different authentication methods like color patterns, image axis identification, and optical character recognition.
Image Based Authentication System
This document outlines a minor project on an Image Based Authentication System (IBAS) undertaken by three computer science students - Pratishtha Singh, Prince Pranav, and Vivek Singh. The project aims to provide high security web login using randomly generated questions based on images to authenticate users. It details the objective, scope, requirements, design, implementation plan, and specifications for the IBAS project being developed for the Computer Science department at NRI Institute of Information Science & Technology, Bhopal.
Graphical password authentication
This document discusses authentication methods and focuses on graphical passwords. It begins with an overview of common authentication methods like text passwords, tokens, and biometrics. It then discusses the drawbacks of text passwords and introduces graphical passwords as an alternative. The document surveys recall-based and recognition-based graphical password techniques and provides examples like Draw-A-Secret and Passfaces. It concludes by noting the advantages of graphical passwords in usability and security but also disadvantages like longer login times and storage requirements.
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 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 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.
Image based authentication
Image-based authentication (IBA) uses a set of user-selected images rather than a password for authentication. The IBA system displays an image set including key images mixed with other images. The user is authenticated by correctly identifying their key images. The document discusses IBA in detail, including potential vulnerabilities and methods to counter threats like observation attacks, brute force attacks, and frequency analysis attacks. It also covers the use of CAPTCHAs to distinguish humans and machines.
graphical password authentication
The document discusses and compares various authentication methods, including recognition-based, recall-based, and graphical password techniques. It provides an overview of common techniques such as Dhamija and Perrig's picture selection scheme, Sobrado and Birget's pass-object selection scheme, and Jermyn et al.'s Draw-A-Secret scheme. While graphical passwords may be easier for users to remember than text passwords, they have limitations such as taking longer to create and register, requiring more storage space, and not being very mature yet compared to traditional text-based passwords. The document evaluates the security and usability of different authentication methods.
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Watch my videos on snack here: --> --> http://sck.io/x-B1f0Iy
@ Kindly Follow my Instagram Page to discuss about your mental health problems-
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@ Appreciate my work:
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Thank-you !
Intrusion Detection System(IDS)
In this ppt I have included mainly three topics.
1.Introduction of IDS
2.Technologies used in IDS
3.Detection types
SHA
The Secure Hash Algorithm (SHA) was developed by NIST and NSA to generate a 160-bit message digest from inputs of less than 264 bits. SHA-1 works by padding the input message, appending the length, dividing into 512-bit blocks, initializing chain variables, and processing each block through 80 iterations involving logical, shift, and addition operations to update the variables. Each iteration uses a constant and the previous output to calculate the next output in order to make it difficult to determine the input from the digest or find colliding messages. Later versions such as SHA-256 increased security by lengthening the digest and number of steps.
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"
Steganography document
A brief over overview of steganographical security techniques and how it has been applied, is applied and will continue to be applied in maintaining confidentiality between two communication parties
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This document discusses graphical passwords as an alternative to alphanumeric passwords. Graphical passwords work by having users select images or points on images in a specific order. They are generally easier for users to remember but harder for others to guess compared to alphanumeric passwords. The document compares graphical and alphanumeric passwords and describes some simple graphical password schemes, advantages like improved security, and disadvantages like longer login times and vulnerability to shoulder surfing. It proposes solutions like triangle-based and movable frame-based schemes to address the shoulder surfing issue.
Authentication scheme for session password using Images and color
This document summarizes a seminar presentation on developing a graphical password system as an alternative to textual passwords. The system aims to avoid vulnerabilities of textual passwords like eavesdropping, dictionary attacks, shoulder surfing. It consists of modules for user registration, image selection, color rating authentication and stores data in tables. The system architecture diagrams show how registration and authentication processes would work. Installation and maintenance aspects are also covered. It concludes the graphical password system would be more secure than existing systems and discusses potential future applications.
Image Steganography
Steganography is the practice of concealing a file, message, image, or video within another file, message, image, or video. The document discusses steganography techniques for hiding data in digital images. It describes how the least significant bit of pixels can be altered to embed hidden messages, leaving the image nearly indistinguishable to human eyes. An example algorithm is provided that replaces the least significant bit of each pixel with a bit from the secret message. Applications are discussed including secure file transfers and hidden communication between governments. The document also outlines pros and cons of steganography and summarizes how the students successfully created an application to encrypt and decrypt hidden messages in images using least significant bit substitution.
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.
Watermarking
Digital Watermarking describes methods and technologies that hide information, for example a number or text, in digital media, such as images, video. The embedding takes place by manipulating the content of the digital data, which means the information is not embedded in the frame around the data. The hiding process has to be such that the modifications of the media are imperceptible. For images this means that the modifications of the pixel values have to be invisible.
A digital watermark is a message which is embedded into digital content (video, images or text) that can be detected or extracted later. Moreover, in image the actual bits representing the watermark must be scattered throughout the file in such a way that they cannot be identified and manipulated. Watermarking is the insertion of imperceptible and inseparable information into the host data for data security & integrity. They are characterizing patterns, of varying visibility, added to the presentation media as a guarantee of authenticity, quality, ownership, and source. However, in digital watermarking, the message is supposed not to visible (or at least not interfering with the user experience of the content), but (only) electronic devices can retrieve the embedded message to identify the code. Another form of digital watermarking is known as steganography, in which a message is hidden in the content without typical citizens or the public authorities noticing its presence. Only a limited number of recipients can retrieve and decode the hidden message. Unlike a traditional watermark on paper, which is generally visible to the eye, digital watermarks can be made invisible or inaudible. They can, however, be read by a computer with the proper decoding software.
Message digest 5
MD5 is a cryptographic hash function that produces a 128-bit hash value for a message of any length. It was originally designed to provide authentication of digital signatures but is no longer considered reliable for cryptography due to techniques that can generate collisions. MD5 operates by padding the input, appending the length, dividing into blocks, initializing variables, processing blocks through 4 rounds of operations with different constants each round, and outputting the hash value. While it was intended to be difficult to find collisions or recover the input, MD5 is no longer considered cryptographically secure due to attacks demonstrating collisions.
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, 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.
Intrusion detection system
hey guys here comes my new implementation of my learning i.e the IDS a concept of network security go through it and add your valuable comments
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.
Project Synopsis
This document describes a fingerprint authentication system for ATMs. It discusses capturing fingerprint images using an optical sensor, extracting minutiae features like ridge endings and bifurcations, and matching fingerprints by comparing minutiae triplets. The system aims to provide biometric security for ATM transactions by verifying a user's identity based on their fingerprint and PIN code. It proposes encrypting fingerprint images during transmission and extracting encryption keys from the images to protect biometric data.
Cryptography
This document discusses cryptography and its various aspects. Cryptography is the science of securing communication and information. It involves encryption to encode data into an unreadable format and decryption to decode it. There are different types of cryptography like symmetric key, public key, and hash functions. Symmetric key uses a single key for encryption and decryption while public key uses different keys. Hash functions create a unique digest from data but the data cannot be recovered from the digest. Cryptography provides security features like authentication, privacy, integrity and non-repudiation. Keys are numerical values used in encryption algorithms. The document outlines advantages like privacy and disadvantages like the time needed for encryption and decryption.
Graphical password authentication system ppts
This document discusses different types of authentication systems including token-based, biometric-based, knowledge-based, recognition-based, pure recall-based, cued recall-based, and hybrid systems. It then focuses on graphical passwords, describing how they work by having users select images in a specific order. The document outlines a project to create an Android application for graphical password authentication to unlock private files using a cued recall system where users must select images in the correct sequence from a random grid. It discusses security considerations like guessing attacks and proposes that this approach provides stronger passwords while increasing the workload for attackers.
Digital watermarking
Digital watermarking embeds invisible identifying information into digital content like audio, video, and images. This allows copyright owners to establish ownership and prevents unauthorized distribution even if the content is copied. There are different types of watermarks that can be embedded, including robust watermarks that are difficult to remove and fragile watermarks that are destroyed if the content is tampered with. However, watermarks are not impossible to attack, as image processing techniques can potentially disable or overwrite them.
Cryptography - A Brief History
An introductory 2002 tour of cryptography for beginners, covering the basics of the technology and the social context cryptography operates in.
History of cryptography
The document provides a history of cryptography from ancient times to modern day. It describes early manual encryption techniques used by ancient Greeks and Romans. In the Middle Ages, Arabic scholar Al-Kindi developed frequency analysis to break ciphers. During the Renaissance period, the polyalphabetic cipher was introduced. In World War 1 and 2, mechanical encryption machines like the Enigma and SIGABA were widely used. Modern cryptography began with Claude Shannon's mathematical foundations and the introduction of the Data Encryption Standard (DES) in the 1970s. Public key cryptography was then introduced in the 1970s through Diffie-Hellman key exchange.
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Watch my videos on snack here: --> --> http://sck.io/x-B1f0Iy
@ Kindly Follow my Instagram Page to discuss about your mental health problems-
-----> https://instagram.com/mentality_streak?utm_medium=copy_link
@ Appreciate my work:
-----> behance.net/burhanahmed1
Thank-you !
Intrusion Detection System(IDS)
In this ppt I have included mainly three topics.
1.Introduction of IDS
2.Technologies used in IDS
3.Detection types
SHA
The Secure Hash Algorithm (SHA) was developed by NIST and NSA to generate a 160-bit message digest from inputs of less than 264 bits. SHA-1 works by padding the input message, appending the length, dividing into 512-bit blocks, initializing chain variables, and processing each block through 80 iterations involving logical, shift, and addition operations to update the variables. Each iteration uses a constant and the previous output to calculate the next output in order to make it difficult to determine the input from the digest or find colliding messages. Later versions such as SHA-256 increased security by lengthening the digest and number of steps.
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"
Steganography document
A brief over overview of steganographical security techniques and how it has been applied, is applied and will continue to be applied in maintaining confidentiality between two communication parties
Graphical password
This document discusses graphical passwords as an alternative to alphanumeric passwords. Graphical passwords work by having users select images or points on images in a specific order. They are generally easier for users to remember but harder for others to guess compared to alphanumeric passwords. The document compares graphical and alphanumeric passwords and describes some simple graphical password schemes, advantages like improved security, and disadvantages like longer login times and vulnerability to shoulder surfing. It proposes solutions like triangle-based and movable frame-based schemes to address the shoulder surfing issue.
Authentication scheme for session password using Images and color
This document summarizes a seminar presentation on developing a graphical password system as an alternative to textual passwords. The system aims to avoid vulnerabilities of textual passwords like eavesdropping, dictionary attacks, shoulder surfing. It consists of modules for user registration, image selection, color rating authentication and stores data in tables. The system architecture diagrams show how registration and authentication processes would work. Installation and maintenance aspects are also covered. It concludes the graphical password system would be more secure than existing systems and discusses potential future applications.
Image Steganography
Steganography is the practice of concealing a file, message, image, or video within another file, message, image, or video. The document discusses steganography techniques for hiding data in digital images. It describes how the least significant bit of pixels can be altered to embed hidden messages, leaving the image nearly indistinguishable to human eyes. An example algorithm is provided that replaces the least significant bit of each pixel with a bit from the secret message. Applications are discussed including secure file transfers and hidden communication between governments. The document also outlines pros and cons of steganography and summarizes how the students successfully created an application to encrypt and decrypt hidden messages in images using least significant bit substitution.
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.
Watermarking
Digital Watermarking describes methods and technologies that hide information, for example a number or text, in digital media, such as images, video. The embedding takes place by manipulating the content of the digital data, which means the information is not embedded in the frame around the data. The hiding process has to be such that the modifications of the media are imperceptible. For images this means that the modifications of the pixel values have to be invisible.
A digital watermark is a message which is embedded into digital content (video, images or text) that can be detected or extracted later. Moreover, in image the actual bits representing the watermark must be scattered throughout the file in such a way that they cannot be identified and manipulated. Watermarking is the insertion of imperceptible and inseparable information into the host data for data security & integrity. They are characterizing patterns, of varying visibility, added to the presentation media as a guarantee of authenticity, quality, ownership, and source. However, in digital watermarking, the message is supposed not to visible (or at least not interfering with the user experience of the content), but (only) electronic devices can retrieve the embedded message to identify the code. Another form of digital watermarking is known as steganography, in which a message is hidden in the content without typical citizens or the public authorities noticing its presence. Only a limited number of recipients can retrieve and decode the hidden message. Unlike a traditional watermark on paper, which is generally visible to the eye, digital watermarks can be made invisible or inaudible. They can, however, be read by a computer with the proper decoding software.
Message digest 5
MD5 is a cryptographic hash function that produces a 128-bit hash value for a message of any length. It was originally designed to provide authentication of digital signatures but is no longer considered reliable for cryptography due to techniques that can generate collisions. MD5 operates by padding the input, appending the length, dividing into blocks, initializing variables, processing blocks through 4 rounds of operations with different constants each round, and outputting the hash value. While it was intended to be difficult to find collisions or recover the input, MD5 is no longer considered cryptographically secure due to attacks demonstrating collisions.
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, 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.
Intrusion detection system
hey guys here comes my new implementation of my learning i.e the IDS a concept of network security go through it and add your valuable comments
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.
Project Synopsis
This document describes a fingerprint authentication system for ATMs. It discusses capturing fingerprint images using an optical sensor, extracting minutiae features like ridge endings and bifurcations, and matching fingerprints by comparing minutiae triplets. The system aims to provide biometric security for ATM transactions by verifying a user's identity based on their fingerprint and PIN code. It proposes encrypting fingerprint images during transmission and extracting encryption keys from the images to protect biometric data.
Cryptography
This document discusses cryptography and its various aspects. Cryptography is the science of securing communication and information. It involves encryption to encode data into an unreadable format and decryption to decode it. There are different types of cryptography like symmetric key, public key, and hash functions. Symmetric key uses a single key for encryption and decryption while public key uses different keys. Hash functions create a unique digest from data but the data cannot be recovered from the digest. Cryptography provides security features like authentication, privacy, integrity and non-repudiation. Keys are numerical values used in encryption algorithms. The document outlines advantages like privacy and disadvantages like the time needed for encryption and decryption.
Graphical password authentication system ppts
This document discusses different types of authentication systems including token-based, biometric-based, knowledge-based, recognition-based, pure recall-based, cued recall-based, and hybrid systems. It then focuses on graphical passwords, describing how they work by having users select images in a specific order. The document outlines a project to create an Android application for graphical password authentication to unlock private files using a cued recall system where users must select images in the correct sequence from a random grid. It discusses security considerations like guessing attacks and proposes that this approach provides stronger passwords while increasing the workload for attackers.
Digital watermarking
Digital watermarking embeds invisible identifying information into digital content like audio, video, and images. This allows copyright owners to establish ownership and prevents unauthorized distribution even if the content is copied. There are different types of watermarks that can be embedded, including robust watermarks that are difficult to remove and fragile watermarks that are destroyed if the content is tampered with. However, watermarks are not impossible to attack, as image processing techniques can potentially disable or overwrite them.
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Authentication scheme for session password using Images and color
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The document provides a history of cryptography from ancient times to modern day. It describes early manual encryption techniques used by ancient Greeks and Romans. In the Middle Ages, Arabic scholar Al-Kindi developed frequency analysis to break ciphers. During the Renaissance period, the polyalphabetic cipher was introduced. In World War 1 and 2, mechanical encryption machines like the Enigma and SIGABA were widely used. Modern cryptography began with Claude Shannon's mathematical foundations and the introduction of the Data Encryption Standard (DES) in the 1970s. Public key cryptography was then introduced in the 1970s through Diffie-Hellman key exchange.
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Cryptography is the practice of securing communications through techniques like encryption and decryption. It involves constructing algorithms to protect information from adversaries and ensure data confidentiality, integrity, and authentication. The main types are transposition ciphers, which rearrange letters, and substitution ciphers, which replace letters. Modern cryptography expanded with computers to encrypt any data and uses symmetric key cryptography, where senders and receivers share a key, and public key cryptography, where they have different keys. It has many applications including ATMs, email, remote access, and smart cards.
Cryptography
Cryptography is the practice and study of securing communication through techniques like encryption. It has evolved through manual, mechanical, and modern eras using computers. Cryptography aims to achieve goals like authentication, confidentiality, integrity, and non-repudiation. Common attacks include brute force, chosen plaintext, and differential power analysis. Symmetric cryptography uses a shared key while asymmetric uses public/private key pairs. Digital signatures and watermarks can authenticate documents. DRM and watermarks control digital content distribution.
Cryptography.ppt
This document provides an overview of cryptography. It begins with basic definitions related to cryptography and a brief history of its use from ancient times to modern ciphers. It then describes different types of ciphers like stream ciphers, block ciphers, and public key cryptosystems. It also covers cryptography methods like symmetric and asymmetric algorithms. Common types of attacks on cryptosystems like brute force, chosen ciphertext, and frequency analysis are also discussed.
Cryptography
Cryptography is the science of using mathematics to encrypt and decrypt data.
Cryptography enables you to store sensitive information or transmit it across insecure networks so that it cannot be read by anyone except the intended recipient.
Cryptography
This PPT explains about the term "Cryptography - Encryption & Decryption". This PPT is for beginners and for intermediate developers who want to learn about Cryptography. I have also explained about the various classes which .Net provides for encryption and decryption and some other terms like "AES" and "DES".
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.
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Implementation of Knowledge Based Authentication System Using Persuasive Cued...
This document presents a graphical password authentication system called Persuasive Cued Click Points (PCCP) that uses images and sound signatures. PCCP aims to improve usability and security over traditional text passwords. A user selects a sequence of click points, one on each of 5 images. Each click point is associated with a sound signature to help the user recall it. The system creates a profile vector from the click points. At login, the user's click points are compared to the profile vector. If they match within a tolerance level, the user is authenticated. The document discusses related work, the proposed system's algorithms and design, and concludes PCCP increases the effective password space while allowing user choice. Users found P
Engineering Project of Venkata Krishna
The document discusses defenses against large-scale online password guessing attacks using persuasive click points. It introduces the proposed system which uses a click-based graphical password with a randomly positioned viewport during password creation. This guides users to select more random passwords that are difficult for attackers to guess. The system aims to improve password security while maintaining usability. It will provide functionality for user registration, password creation and login and allow users to perform transactions after authentication. A feasibility study found the system to be technically and economically viable.
7. 9589 1-pb
This document describes a new password authentication method that combines textual passwords with a modified cued click points technique for increased security. The method uses a special key display interface that breaks the user's password into a combination of four passwords plus three additional strings. These seven strings are then encrypted using a novel one-way encryption algorithm called One-time Data Division (ODD). This produces a 256-character encrypted password that is stored in the database for authentication. The encryption is complex and lossy, making the original password irrecoverable even by an administrator. The method aims to provide strong security while maintaining usability.
Persuasive Cued Click Based Graphical Password with Scrambling For Knowledge ...
This document describes a graphical password authentication technique called Persuasive Cued Click Based Graphical Password with Scrambling. The technique aims to encourage users to select stronger passwords while maintaining memorability. It uses a picture and persuades users to click points on the image in a certain order and number as their password. The images are scrambled during login to make image recognition more complex and protect against common attacks on graphical passwords. The scrambling technique and persuasive cues are meant to address security and usability issues with traditional text passwords and other authentication methods.
Persuasive Cued Click Point Password with OTP
Authentication plays a major role in Digital environment. In this environment we have different methods which generally use alphanumeric characters and special characters for password creation. These methods have some problems like hard to remember password because it has no meaning and easily breakable by third parties or attackers. To address these issues, many techniques for authentication are proposed from which graphical password method is best in terms of cost and usage. Basically, Graphical passwords use images for password creation and it has some demerits like hotspot and shoulder surfing problem. A persuasive cued click-point based method reduces hotspot problem. To prevent persuasive cued click-point based method from shoulder surfing we include one time password. For more user convenience we provide two login
methods one which requires internet and other which does not
require internet.
An03402300234
The document describes a proposed graphical password authentication system that integrates sound signatures. The system uses a Cued Click Points (CCP) scheme where users select one click point on each of five images as their password. Additionally, users select a sound signature for each click point to help recall the password. Evaluation showed the system had better usability, accuracy and speed than other authentication methods. Users found selecting one click point per image aided by sound signatures was easier than alternatives. The system addresses limitations of prior work by making password cracking more difficult through the addition of sound signatures.
Shoulder surfing resistant graphical
TEXTUAL passwords have been the most widely used authentication method for decades. Comprised of number sand upper- and lower-case letters, textual passwords are considered strong enough to resist against brute force
attacks. However, a strong textual password is hard to memorize and recollect .Therefore, users tend to choose passwords that are either short or from the dictionary, rather than random alphanumeric strings.
Various graphical password authentication schemes
were developed to address the problems and weaknesses associated with textual passwords. Based on some studies such as those in , humans have a better ability to memorize images with long-term memory(LTM) than verbal representations. Image-based passwords were proved to be easier to recollect in several user studies As a result, users can set up a complex authentication password and are capable of recollecting it after a long time even if the memory is not activated periodically.
The human actions such as choosing bad passwords for
new accounts and inputting passwords in an insecure way for later logins are regarded as the weakest link in the authentication chain [16]. Therefore, an authentication scheme should be designed to overcome these vulnerabilities.
In this paper, we present a secure graphical authentication system named Pass Matrix that protects users from becoming victims of shoulder surfing attacks when inputting passwords in public through the usage of one-time login indicators. A login indicator is randomly generated for each pass-image and will be useless after the session terminates. The login indicator provides better security against shoulder surfing attacks, since users use a dynamic pointer to point out the position of their passwords rather than clicking on
the password object directly.
A novel multifactor authentication system ensuring usability and security
User authentication is one of the most important part of information security. Computer security most
commonly depends on passwords to authenticate human users. Password authentication systems will be
either been usable but not secure, or secure but not usable. While there are different types of authentication
systems available alphanumeric password is the most commonly used authentication mechanism. But this
method has significant drawbacks. An alternative solution to the text based authentication is Graphical
User Authentication based on the fact that humans tends to remember images better than text. Graphical
password authentication systems provide passwords which are easy to be created and remembered by the
user. However, the main issues of simple graphical password techniques are shoulder surfing attack and
image gallery attack. Studies reveals that most of the graphical passwords are either secure but not usable
or usable but not secure. . In this paper, a new technique that uses cued click point graphical password
method along with the use of one-time session key is proposed. The goal is to propose a new authentication
mechanism using graphical password to achieve higher security and better usability levels. The result of
the system testing is evaluated and it reveals that the proposed system ensures security and usability to a
great extent.
finale.ppt.pptx
This document describes a graphical password authentication system project. The project aims to create a more secure authentication method than traditional text passwords by using images and click points. It will have hardware and software requirements and address problems with standard passwords like dictionary attacks. The objectives are to understand human memory for visual information and have users click points on an image as their password. It will provide security advantages over text passwords and be more user-friendly.
Efficient Securing System Using Graphical Captcha
The document proposes a new security system called CaRP (Captcha as graphical passwords) that integrates captcha technology into a graphical password scheme. CaRP allows users to set passwords by clicking on images in a captcha challenge. This addresses weaknesses in existing systems like vulnerability to brute force and dictionary attacks. The proposed system offers stronger security against online attacks while being easy for users. It is recommended for domains like banking that require enhanced security.
A graphical password authentication system (ieee 2011) 1
The document proposes a graphical password authentication system that combines graphical and text-based passwords. It describes how the system works: users select points of interest (POIs) on an image and associate text with each during registration. For login, users must correctly select the POIs in the correct order and provide the associated text. The system was implemented using Visual Basic .NET and aims to achieve the memorability of graphical passwords with the security of text-based passwords through multiple authentication factors.
Multiple grid based graphical text password authentication
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
A Graphical Password Scheme using Persuasive Cued Click Points
International Journal of Modern Engineering Research (IJMER) is Peer reviewed, online Journal. It serves as an international archival forum of scholarly research related to engineering and science education.
Graphical Password Authentication
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Graphical Based Password for Android Phones using Keystroke Dynamics - A Survey
Technology has elevated to grab an important position in humans life, the best example is smartphones. They offer access to network as well as online banking transactions, where simplification of human labour affects security and user authentication, and passwords are first line of defense, it’s crucial to pick a strong password. Online banking applications currently use alphanumerical usernames and passwords for authentication, which are exposed to eves dropping, attacks, and shoulder surfing. Users often choose either easy to remember passwords, which can be easily guessed or difficult ones, which tend to be forgotten. The paper revolves around the views, limitation of current system and offers a dynamic biometrics, as it can be easily integrated into the existing computer security systems with minimal alteration and user intervention. The main objective is to secure using cued click point (CCP), which is one click based graphical password scheme for sequence of images and measuring, assessing humans typing rhythm, it’s based upon the human tendency to memorize graphical passwords more comfortably.
Graphical Based Password for Android Phones using Keystroke Dynamics - A Survey
Technology has elevated to grab an important position in humans life, the best example is smartphones. They offer access to network as well as online banking transactions, where simplification of human labour affects security and user authentication, and passwords are first line of defense, it’s crucial to pick a strong password. Online banking applications currently use alphanumerical usernames and passwords for authentication, which are exposed to eves dropping, attacks, and shoulder surfing. Users often choose either easy to remember passwords, which can be easily guessed or difficult ones, which tend to be forgotten. The paper revolves around the views, limitation of current system and offers a dynamic biometrics, as it can be easily integrated into the existing computer security systems with minimal alteration and user intervention. The main objective is to secure using cued click point (CCP), which is one click based graphical password scheme for sequence of images and measuring, assessing humans typing rhythm, it’s based upon the human tendency to memorize graphical passwords more comfortably.
Securing online password guessing attack
This document discusses defenses against password guessing attacks using persuasive click points. It introduces traditional graphical password systems and classifications of passwords. It outlines the disadvantages of existing systems like tokens, knowledge-based passwords, and biometrics. The document then describes Persuasive Cued Click Points (PCCP), which uses a viewport to guide users to select more random passwords within an image. PCCP provides advantages like being easier to remember than alphanumeric passwords while providing better security against brute force and dictionary attacks.
CARP: AN IMAGE BASED SECURITY USING I-PAS
— A CAPTCHA means "Completely Automated
Public Turing test to tell Computers and Humans Apart". It is a
type of challenge-response test used in computing to determine
whether or not the user is human. CaRP is both a Captcha and a
graphical password scheme. CaRP addresses a number of
security problems altogether, such as online guessing attacks,
relay attacks, and, if combined with dual-view technologies,
shoulder-surfing attacks. Particularly, a CaRP password can be
found only probabilistically by automatic online guessing attacks,
even if the password is in the search set. CaRP also offers an
approach to address the well-known image hotspot problem in
popular graphical password systems, such as PassPoints, which
often leads to weak password choices. Thus, a variant to the
login/password scheme, using graphical scheme was introduced.
But it also suffered due to shoulder-surfing and screen dump
attacks. Thus it introduces a framework to proposed (IPAS)
Implicit Password Authentication System, which is protected to
the common attacks suffered by other authentication schemes.
Research ppr
This summary provides the key details about a research paper on secure user authentication and graphical passwords using cued click-points:
1. The paper proposes a graphical password scheme called Persuasive Cued Click-Points (PCCP) to improve usability and security over text passwords. PCCP aims to discourage users from selecting weak passwords by influencing them to choose more random click points.
2. In PCCP, users select a click point on a series of images to create their password. The system aims to minimize "hotspots" by nudging users to select click points farther from common areas.
3. An evaluation found PCCP passwords were more secure than the original Cued Click
J0704055058
This document proposes an image-based authentication system for email to increase security. It aims to prevent shoulder surfing, TEMPEST, and brute force attacks. The system uses a three-level security approach involving a text password, image-based authentication where the user selects an image, and a one-time numeric password sent to the user's mobile phone. Communication between the client and server uses AJAX for increased interaction and speed. The system is analyzed against existing password and authentication methods and is concluded to be highly secure and user-friendly while preventing certain attacks. Future work plans to implement more secure encryption algorithms like MD5.
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Three Level Security System Using Image Based Aunthentication
- 1. loading
- 3. THREE LEVEL SECURITY SYSTEM USING IMAGE BASED AUTHENTICATION
- 5. CONTENTS Introduction Existing System Propose System Hardware Specification Software Specification SECURITY LEVEL 1 SECURITY LEVEL 2 SECURITY LEVEL 3 FLOW CHART
- 6. INTRODUCTION
- 7. Texts passwords are the most commonly used technique for authentication and have several drawbacks. Graphical passwords provide a promising alternative to traditional alphanumeric passwords due to the fact that humans can remember pictures better than text.
- 8. In this paper, we propose a simple graphical password authentication system that consists of a sequence of ‘n’ images and the user have to select the click points associated with one of the ‘n’ image in correct sequence for successful login. This authentication system employs the user’s personal handheld device as the second factor of authentication.
- 9. With the increasing popularity of handheld devices such as cell phones, our approach can be leveraged by many organizations to overcome threats such as key-loggers, shoulder surfing, weak passwords. Click cued points is a click-based graphical password scheme, a cued-recall graphical password technique. Users Click on one point per image for a sequence of images.
- 10. Existing System
- 11. Security-sensitive environments protect their access control mechanisms. resources against unauthorized access by enforcing Text based passwords are not secure enough for such applications. User authentication can be improved by using both text passwords and structured images.
- 12. The existing system is Pass Points. It proposed Passwords which could be composed of several points anywhere on an Image. They also proposed a scheme with three overlapping grids, allowing for login attempts that were approximately correct to be accepted
- 13. Propose System
- 14. A password authentication system should encourage strong passwords while maintaining memo ability. We propose that authentication schemes allow user choice while influencing users toward stronger passwords In our system, the task of selecting weak passwords (which are easy for attackers to predict) is more tedious, discouraging users from making such choices. In effect, this approach
- 16. PROCESSOR : Dual Core HARD DISK : 256 GB RAM : 1 GB KEYBOARD : 104 keys Standard Keyboard MONITOR : 15” Color Monitor MOUSE : Standard 3 Button Mouse
- 18. Operating System : Windows XP, -Windows8 Front end : JAVA Swing Back end : MYSQL
- 19. SECURITY LEVEL 1
- 20. Username Password & Color Patten SECURITY LEVEL 1
- 21. SECURITY LEVEL 2
- 22. Axis identifying the image SECURITY LEVEL 2
- 23. SECURITY LEVEL 3
- 24. Opt code & Character button SECURITY LEVEL 3
- 25. FLOW CHART