An image edge based approach for image password encryption

Abstract

Authentication plays a major role in ensuring the security of the system by allowing only the authorized user. The traditional authentication system of using text-based passwords has many flaws in the aspects of usability and security issues. Hence, graphical passwords, which consist of clicking or dragging activities on the pictures rather than typing textual characters, were introduced to overcome this problem. However, it is found that these graphical passwords are susceptible to brute force and dictionary attack methods. To overcome this drawback, images can be used as password replacing alphanumeric and graphical passwords. The challenge lies in encrypting the image password and storing it in the database. An image edge password encryption (IEPE) algorithm is proposed to encrypt the image passwords based on its edge values. Experimental results are shown to prove that encrypted image passwords using IEPE algorithm requires a less internal storage space when compared with the existing password encryption techniques. It is also shown that IEPE algorithm scales better when compared with the existing text-based and graphical password authentication methods. Also, IEPE algorithm is shown to resist various password cryptanalytic attacks.

Color Image Encryption using Chaotic Algorithm and 2D Sin-Cos Henon Map for High Security

“…The method for protecting digital photographs is called picture encryption generation [9][10][11][12][13], and its fundamental idea is to encrypt the digital records that are contained within the digital photograph, as well as to acquire the completely exceptional encrypted photographs of the appearance and the genuine digital photograph. This ensures that the content of the digital photograph can't be viewed immediately.…”

A novel image encryption algorithm based on least squares generative adversarial network random number generator

“…Short cycle length is one of the important problems of chaotic keystream generators, which results from the finite precision of computers [24,35]. To solve the problem of randomness and insufficient security of keystream generated by the chaotic system, many scholars have developed several effective encryption algorithms by combining chaotic systems with other methods [10,25,37,47,57], such as breadth-first search [57], DAN coding [25,47], edge password [37], elliptic curve [10] and so on.…”