Picture arithmetic cryptosystem using symmetric key enhanced algorithm with legitimate pictures-abstract
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The document presents a new encryption technique using pictures as keys to enhance the security of secret message transmission over networks. It describes two encryption processes: the first using the Vigenere cipher with a picture-derived key, and the second utilizing a 10x26 table generated from the first key, which collectively increases the difficulty of breaking the system. Additionally, the system's performance improves with the number of pictures used, making it more resilient to attacks compared to traditional text-based encryption methods.
Picture arithmetic cryptosystem using symmetric key enhanced algorithm with legitimate pictures-abstract
- 1. PICTURE ARITHMETIC CRYPTOSYSTEMS USING SYMMETRIC KEY ENCHANCED ALGORITHM WITH LEGITIMATE PICTURES ABSTRACT The secret messages passed through network are hacked and algorithms are not efficient to the expected level. A powerful encryption technique is introduced and performs a large variety of generating keys to encrypt the message in the form of pictures. The arithmetic operations are performed over the picture key to make the technique even more powerful. First encryption is done with the help of vigenere cipher and the key is generated through picture. Second encryption is done with the help of newly designed 10x26 table and the key is generated from the first key. The decryption is done by the reverse of encryption process.
- 2. EXISTING SYSTEM The cryptographic systems use the key to encrypt messages in the form of text or string. Vigenere cipher can be broken using counting diagram.Total number of combinations required to break the system using counting diagram is very small. Large key size makes the system less efficient. The secret key to perform encryption is more reliable to attack because it is an easily recognizable format. PROPOSED SYSTEM The encryption of the message is done using the picture key which is difficult to break. Total number of combinations required to break the system exceeds hundred digit number and more with increase in number of pictures. The system performances increases with increase in key size. The system uses two main operations to make the key stronger. The first operation is LOCK-10(Logical Crypto Key)is performed over the secret code to get the picture sorting key.LOCK-10 involves 10 different operations and these are performed over the secret code to get the picture sorting key. The operation LOCK-10 can be performed in 10 factorial ways .The picture sorting key is obtained and the ‘N’ pictures are arranged in one of the ‘N’ factorial ways. The PACK(Picture Arithmetic Crypto Key) operation is performed over the picture key to get the first key. The second key is generated from the first key by performing LOCK-5 operation over the first key. The vigenere encryption is performed over the first key and encryption is performed over the second key with the help of 10x26 matrix. Increase in number of pictures used for ciphering, increases the system performance proportionally.
- 3. REQUIREMENT SPECIFICATIONS HARDWARE REQUIREMENT Processor : Pentium IV or above Ram : 512 MB Hdd : 80 GB SOFTWARE REQUIREMENT Operating system : windows Platform : c#.Net 4.0 Front End : C Sharp