ImgFS: a transparent cryptography for stored images using a filesystem in userspace

Blockchain-Based Decentralized Authentication Model for IoT-Based E-Learning and Educational Environments

“…These encryption algorithms were selected based on comparing several ciphers presented in [44]. The processing speed of these algorithms is faster than the most popular ciphers such as the Advance Encryption Standard (AES) and the Rivest-Shamir-Adleman (RSA) encryption algorithms [45]. They require less power while being able to provide a reasonable level of security, making them suitable for implementation in resource-constrained IoT devices [5].…”

Secure Outsourcing and Sharing of Cloud Data Using a User-Side Encrypted File System

“…Therefore, data sharing is hard, and the access right granted to a user can be simply used to access the other owner's data stored on the source directory. Moreover, these file systems have no notion of individual files and decrypt all files stored on a particular mounting point each time a file system is mounted, imposing high overhead and high latency that severely limit scalability [14].…”

“…SiRiUS [39] is a multiuser file system depends on an implemented key management scheme to encrypt individual files, and enforce data access only for authorized users. ImgFS [14] is a userlevel file system built atop FUSE to provide a transparent encryption at a fine-grained level of individual stored images with ability to support image files sharing among multiple users. CryFS [33] is another FUSE-based encrypted file system designed to integrate with a third party cloud storage to protect the confidentiality and privacy of cloud data as well as metadata.…”

“…We tested OutFS against similar encryption file systems using ImgFS [14], EncFS [13], CryFS [33], CFS [35], and SiRiUS [39] on write and read operations with cryptographic processes. Figure 8 shows the measured times of writing and reading files of various sizes using these schemes.…”

“…The cryptographic file system can be built as a layer inside the kernel space of the operating system [9,10]. It can also be implemented as a file system in user space using FUSE technology [11] to build a cryptographic file system on top of local or remote storage systems [12,13,14]. Other schemes use a cloud-backed file system, such as S3FS [15], BlueSky [16], S3QL [17], which are implemented on remote file systems to provide encryption services to stored data in one or multiple clouds.…”