The transactions in blockchain framework, based cryptocurrencies are publicly available,
thereby accessible to all users by design. However, the anonymity of blockchain …

Image watermarking can provide ownership identification as well as tamper protection.
Transform domain based image watermarking has been proven to be more robust than the …

The amount of data collected by various organizations about individuals is continuously
increasing. This includes diverse data sources often for data of high dimensionality. Most of …

In this paper, we study dedicated quantum collision attacks on SHA-256 and SHA-512 for
the first time. The attacks reach 38 and 39 steps, respectively, which significantly improve the …

A framework for maintaining security & preserving privacy for analysis of sensor data from
smart homes, without compromising on data utility is presented. Storing the personally …

In this paper, we present preimage attacks on up to 43-step SHA-256 (around 67% of the
total 64 steps) and 46-step SHA-512 (around 57.5% of the total 80 steps), which significantly …

Physical unclonable functions (PUFs) serve as a hardware source of private information that
cannot be duplicated and have applications in hardware integrity and information security …

Traditional encryption algorithms are inefficient when applied to image encryption because
image data have the characteristics of large data sizes and strong correlations between …

In this paper, we analyze the collision resistance of SHA-2 and provide the first results since
the beginning of the NIST SHA-3 competition. We extend the previously best known semi …

In this work, we provide new and improved attacks against 22, 23 and 24-step SHA-2 family
using a local collision given by Sanadhya and Sarkar (SS) at ACISP'08. The success …