HIGH SECURITY ENCRYPTION USING AES & VISUAL CRYPTOGRAPHY
ABSTRACT
A novel and highly secure encryption methodology using a combination of AES and visual crypto. With the ever increasing human dependency on The Internet for performing various activities such as banking, shopping or transferring money, there equally exists a need for safe and secure transactions. This need a system that automatically translates to the requirement of increased network security and better and fast encryption algorithms. This system addresses the above issue by introducing a novel methodology by utilizing the AES method of encryption and also further enhances the same with the help of visual cryptography.
CHAPTER I
General Introduction
1.1 Introduction
The Internet is the fastest growing communication medium and essential part of the infrastructure, nowadays. To cope with the growth of internet it has become a constant struggle to keep the secrecy of information and when profits are involved, protect the copyright of data. Security, as of now, is the techniques developed to securely guard information and information systems store on computers. Potential threats consist of the destruction of computer hardware, software, theft, unauthorized use, or disclosure of data. Computer and the information they contain are often considered confidential systems because their use is typically restricted to a limited number of users. This confidentiality can be exposed to danger in a variety of ways.
Encryption has become an important part due to the emergence of Internet, where sending and receiving data across computers need security of some standard. Various algorithms have been proposed in this field to encrypt and decrypt images [1]. The primary objective of image encryption is to transmit an image securely over a connected network so that no unauthorized user should be able to decrypt the image.
Research shows that using AES and Visual Cryptography to encrypt images is not entirely new. Hence, Kumar et al proposed an encryption scheme that splits the Image into R, G, and B components and encrypt them using AES [2]. Nikita et all also proposed an encryption scheme has been proposed that uses AES and Visual Cryptography to store bio metric data in the cloud [3]. However, these implementations do not disclose any information related to security in the private key generated using AES.
Cryptography involves converting a message text into an unreadable r. It provide some security of data neither of them alone is secure enough for sharing information over an unsecure communication channel and are vulnerably susceptible to intruder attacks. Albeit these techniques are often cumulated together to achieve higher calibres of security but still there is a desideratum of a highly secure system to transfer information over any communication media minimizing the threat of intrusion. Visual cryptography is the art of encrypting information such as handwritten text, images etc. in such a way that the decryption is possible without any mathematical computations and human visual system is sufficient to decrypt the information. The individuals who do not have cognizance of cryptography are indirectly getting involved in decryption.
1.2 Statement of the Problem
For data security AES and visual encryption are among the most used encryption algorithms. However each of them has weaknesses which render them vulnerable to intruders. AES has a challenge to achieve the key distribution because it uses third party channels to deliver the secret key. There is no control mechanisms in place for the third party which communicate the secret key. The probability that should be an intruder listening to discover the secret key is high. The symmetric encryption algorithms are more secured in terms of key size to encrypt huge data.
Visual encryption is asymmetric cryptography tried to fix the issue of sharing keys. The major advantages of asymmetric are use of two different keys and providing digital signatures to achieve authentication of sender. Even if visual cryptography algorithm has the aforementioned advantages its main problem is slowness to compute data. visual cryptography algorithm take longer than AES to encrypt and decrypt huge data. The intruder has enough space to detect mathematically the key while encrypting data due to low speed of processing time.
The achievement of the cryptography’s functionalities such as integrity, confidentiality and authentication and non-repudiation, by the use of only among above-mentioned algorithms is a challenge. The key distribution and authentication of data source become a major problem for AES because intruder can manage to get secret key. Then decrypt the data which can affect data confidentiality and data integrity. The AES doesn’t provide signature on the data transmitted, to ensure the authentication and non-repudiation. The visual cryptography algorithm is very slow and complex to implement. The slowness of visual cryptography gives an open window to attackers during the process then data encryption then integrity is affected.
1.3 Objectives of Study
The main objective of this study is to develop a High security encryption using AES and visual encryption. Other objectives of this study include:
- To identify vulnerabilities and issues of data encrypted using AES and visual cryptography.
- To analyze cryptography functionalities provided by AES and visual cryptography.
- To construct one hybrid encryption technique for data security using AES and visual encryption.
- To evaluate enhancement of data security provided by both encryption technique.
1.4 Scope of the study
This research is going to develop a High security encryption using AES and visual encryption. This study is based on organizations which have the option of storing and transmitting data. Theoretically the study will cover the attributes of identification, analysis, and construction of both technique to secure data.
1.5 Significance of the Study
Projects provide a flexible framework for engaging students in exploring curricular topics and developing important 21st century skills, such as communication, teamwork, and technology skills. In addition, students are motivated by the fun and creative format and the opportunity to make new friends around the world. For user, encrypting and decrypting of password enables quick and easy management of files.
1.6 Limitation of the Research
Usually, every work has some limitations and this study is not exempted. The two major limitations of this study are the high programming technique as well as financial constraints. The high programming technique constraint in Visual encryption prevents the researcher to have an in depth study and analysis on the subject matter. While the issue of financial constraint limits the frequency of investigation to/from the institution toward gathering the necessary information relevant for the study.
1.7 Definitions of Terms
Cryptography: – is a method of storing and transmitting data in a particular form so that only those for whom it is intended can read and process it.
Plaintext: – In cryptography, plaintext is information a sender wishes to transmit to a receiver. Cleartext is often used as a synonym.
Cyphertext:- In cryptography, ciphertext or cyphertext is the result of encryption performed on plaintext using an algorithm, called a cipher. Ciphertext is also known as encrypted or encoded information because it contains a form of the original plaintext that is unreadable by a human or computer without the proper cipher to decrypt it.
Decryption, the inverse of encryption, is the process of turning ciphertext into readable plaintext. Ciphertext is not to be confused with code text because the latter is a result of a code, not a cipher.
DES: – The Data Encryption Standard (DES) is an outdated symmetric-key method of data encryption. DES works by using the same key to encrypt and decrypt a message, so both the sender and the receiver must know and use the same private key.
Encryption: – is the most effective way to achieve data security. To read an encrypted file, you must have access to a secret key or password that enables you to decrypt it. Unencrypted data is called plain text; encrypted data is referred to as cipher text.
AES: – The Advanced Encryption Standard (AES), also known as Rijndael (its original name), is a specification for the encryption of electronic data established by the U.S. National Institute of Standards and Technology (NIST) in 2001.
HIGH SECURITY ENCRYPTION USING AES & VISUAL CRYPTOGRAPHY
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HIGH SECURITY ENCRYPTION USING AES & VISUAL CRYPTOGRAPHY
ABSTRACT
A novel and highly secure encryption methodology using a combination of AES and visual crypto. With the ever increasing human dependency on The Internet for performing various activities such as banking, shopping or transferring money, there equally exists a need for safe and secure transactions. This need a system that automatically translates to the requirement of increased network security and better and fast encryption algorithms. This system addresses the above issue by introducing a novel methodology by utilizing the AES method of encryption and also further enhances the same with the help of visual cryptography.
CHAPTER I
General Introduction
1.1 Introduction
The Internet is the fastest growing communication medium and essential part of the infrastructure, nowadays. To cope with the growth of internet it has become a constant struggle to keep the secrecy of information and when profits are involved, protect the copyright of data. Security, as of now, is the techniques developed to securely guard information and information systems store on computers. Potential threats consist of the destruction of computer hardware, software, theft, unauthorized use, or disclosure of data. Computer and the information they contain are often considered confidential systems because their use is typically restricted to a limited number of users. This confidentiality can be exposed to danger in a variety of ways.
Encryption has become an important part due to the emergence of Internet, where sending and receiving data across computers need security of some standard. Various algorithms have been proposed in this field to encrypt and decrypt images [1]. The primary objective of image encryption is to transmit an image securely over a connected network so that no unauthorized user should be able to decrypt the image.
Research shows that using AES and Visual Cryptography to encrypt images is not entirely new. Hence, Kumar et al proposed an encryption scheme that splits the Image into R, G, and B components and encrypt them using AES [2]. Nikita et all also proposed an encryption scheme has been proposed that uses AES and Visual Cryptography to store bio metric data in the cloud [3]. However, these implementations do not disclose any information related to security in the private key generated using AES.
Cryptography involves converting a message text into an unreadable r. It provide some security of data neither of them alone is secure enough for sharing information over an unsecure communication channel and are vulnerably susceptible to intruder attacks. Albeit these techniques are often cumulated together to achieve higher calibres of security but still there is a desideratum of a highly secure system to transfer information over any communication media minimizing the threat of intrusion. Visual cryptography is the art of encrypting information such as handwritten text, images etc. in such a way that the decryption is possible without any mathematical computations and human visual system is sufficient to decrypt the information. The individuals who do not have cognizance of cryptography are indirectly getting involved in decryption.
1.2 Statement of the Problem
For data security AES and visual encryption are among the most used encryption algorithms. However each of them has weaknesses which render them vulnerable to intruders. AES has a challenge to achieve the key distribution because it uses third party channels to deliver the secret key. There is no control mechanisms in place for the third party which communicate the secret key. The probability that should be an intruder listening to discover the secret key is high. The symmetric encryption algorithms are more secured in terms of key size to encrypt huge data.
Visual encryption is asymmetric cryptography tried to fix the issue of sharing keys. The major advantages of asymmetric are use of two different keys and providing digital signatures to achieve authentication of sender. Even if visual cryptography algorithm has the aforementioned advantages its main problem is slowness to compute data. visual cryptography algorithm take longer than AES to encrypt and decrypt huge data. The intruder has enough space to detect mathematically the key while encrypting data due to low speed of processing time.
The achievement of the cryptography’s functionalities such as integrity, confidentiality and authentication and non-repudiation, by the use of only among above-mentioned algorithms is a challenge. The key distribution and authentication of data source become a major problem for AES because intruder can manage to get secret key. Then decrypt the data which can affect data confidentiality and data integrity. The AES doesn’t provide signature on the data transmitted, to ensure the authentication and non-repudiation. The visual cryptography algorithm is very slow and complex to implement. The slowness of visual cryptography gives an open window to attackers during the process then data encryption then integrity is affected.
1.3 Objectives of Study
The main objective of this study is to develop a High security encryption using AES and visual encryption. Other objectives of this study include:
1.4 Scope of the study
This research is going to develop a High security encryption using AES and visual encryption. This study is based on organizations which have the option of storing and transmitting data. Theoretically the study will cover the attributes of identification, analysis, and construction of both technique to secure data.
1.5 Significance of the Study
Projects provide a flexible framework for engaging students in exploring curricular topics and developing important 21st century skills, such as communication, teamwork, and technology skills. In addition, students are motivated by the fun and creative format and the opportunity to make new friends around the world. For user, encrypting and decrypting of password enables quick and easy management of files.
1.6 Limitation of the Research
Usually, every work has some limitations and this study is not exempted. The two major limitations of this study are the high programming technique as well as financial constraints. The high programming technique constraint in Visual encryption prevents the researcher to have an in depth study and analysis on the subject matter. While the issue of financial constraint limits the frequency of investigation to/from the institution toward gathering the necessary information relevant for the study.
1.7 Definitions of Terms
Cryptography: – is a method of storing and transmitting data in a particular form so that only those for whom it is intended can read and process it.
Plaintext: – In cryptography, plaintext is information a sender wishes to transmit to a receiver. Cleartext is often used as a synonym.
Cyphertext:- In cryptography, ciphertext or cyphertext is the result of encryption performed on plaintext using an algorithm, called a cipher. Ciphertext is also known as encrypted or encoded information because it contains a form of the original plaintext that is unreadable by a human or computer without the proper cipher to decrypt it.
Decryption, the inverse of encryption, is the process of turning ciphertext into readable plaintext. Ciphertext is not to be confused with code text because the latter is a result of a code, not a cipher.
DES: – The Data Encryption Standard (DES) is an outdated symmetric-key method of data encryption. DES works by using the same key to encrypt and decrypt a message, so both the sender and the receiver must know and use the same private key.
Encryption: – is the most effective way to achieve data security. To read an encrypted file, you must have access to a secret key or password that enables you to decrypt it. Unencrypted data is called plain text; encrypted data is referred to as cipher text.
AES: – The Advanced Encryption Standard (AES), also known as Rijndael (its original name), is a specification for the encryption of electronic data established by the U.S. National Institute of Standards and Technology (NIST) in 2001.
HIGH SECURITY ENCRYPTION USING AES & VISUAL CRYPTOGRAPHY
Attached Files