Results 21 to 30 of about 30,217 (176)
Efficient non-malleable codes and key derivation for poly-size tampering circuits [PDF]
, 2016 Non-malleable codes, defined by Dziembowski, Pietrzak, and Wichs (ICS '10), provide roughly the following guarantee: if a codeword c encoding some message x is tampered to c' = f(c) such that c' ≠ c , then the tampered message x' contained in c' reveals ...
Faust, Sebastian +3 more
core +1 more source
Tamper Detection in Audit Logs [PDF]
, 2004 Audit logs are considered good practice for business systems, and are required by federal regulations for secure systems, drug approval data, medical information disclosure, financial records, and electronic voting. Given the central role of audit logs, it is critical that they are correct and inalterable.
Richard T. Snodgrass +2 more
openaire +1 more source
On Resampling Detection and its Application to Detect Image Tampering [PDF]
2006 IEEE International Conference on Multimedia and Expo, 2006 Usually digital image forgeries are created by copy-pasting a portion of an image onto some other image. While doing so, it is often necessary to resize the pasted portion of the image to suit the sampling grid of the host image. The resampling operation changes certain characteristics of the pasted portion, which when detected serves as a clue of ...
S. Prasad, K. Ramakrishnan
openaire +2 more sources
Non-malleable codes for space-bounded tampering [PDF]
, 2017 Non-malleable codes—introduced by Dziembowski, Pietrzak and Wichs at ICS 2010—are key-less coding schemes in which mauling attempts to an encoding of a given message, w.r.t.
A Faonio +30 more
core +2 more sources
Detecting digital tampering by blur estimation [PDF]
First International Workshop on Systematic Approaches to Digital Forensic Engineering (SADFE'05), 2006 With powerful computer and mighty software, seasoned users could turn digital media into what they want. The detection of digital tampering has become a crucial problem. In most of the time, digital tampering is not perceptible by human: however, some traces of digital tampering may be left in the media during the process.
Hsiao, Dun-Yu, Pei, Soo-Chang
openaire +2 more sources
A bit toggling approach for AMBTC tamper detection scheme with high image fidelity.
PLoS ONE, 2020 The existing tamper detection schemes for absolute moment block truncation coding (AMBTC) compressed images are able to detect the tampering. However, the marked image qualities of these schemes can be enhanced, and their authentication methods may fail ...
Wien Hong +4 more
doaj +1 more source
Blur detection of digital forgery using mathematical morphology
网络与信息安全学报, 2017 Aiming at the fuzzy operation commonly used in image tampering,a new fuzzy detection scheme using smooth filter preserving edges and mathematical morphological methods was studied.By using the sharpening function and denoising function of both methods ...
Hui-fen HUANG +2 more
doaj +3 more sources
A two-stage detection method of copy-move forgery based on parallel feature fusion
EURASIP Journal on Wireless Communications and Networking, 2022 The copy-move forgery refers to the copying and pasting of a region of the original image into the target region of the same image, which represents a typical tampering method with the characteristics of easy tampering and high-quality tampering.
Wujian Ye +4 more
doaj +1 more source
An investigation of an MPEG-4 embedded spatial digital watermark developed for tamper detection and characterization [PDF]
, 2003 The widespread adoption of digital video techniques has generated a requirement for authenticity verification in applications such as criminal evidence, insurance claims and commercial databases.
Bull, DR +3 more
core +2 more sources
SPR sensor for tampering detection in biofuels [PDF]
2015 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Proceedings, 2015 This work presents a sensor based on surface plasmon resonance phenomenon and combined with dc-sheet resistance monitoring for detecting tampering of ethanol fuel. To demonstrated the feasibility of the proposed sensor, hydrated and anhydride ethanol fuel were tested.
Leiva Casemiro Oliveira +5 more
openaire +2 more sources