Hash function Skein is one of the 14 NIST SHA-3 second round candidates. Threefish is a tweakable block cipher as the core of Skein, defined with a 256-, 512-, and 1024-bit block size. The 512-bit block size is the primary proposal of the authors. Skein had been updated after it entered the second round, the only differences between the original and the new version are the rotation constants. I...

The hash function Skein is one of the five finalists of the NIST SHA-3 competition; it is based on the block cipher Threefish which only uses three primitive operations: modular addition, rotation and bitwise XOR (ARX). This paper studies the boomerang attacks on Skein-512. Boomerang distinguishers on the compression function reduced to 32 and 36 rounds are proposed, with complexities 2 and 2 r...

The hash function ARIRANG is one of the 1st round SHA-3 candidates. In this paper, we present preimage attacks on ARIRANG with step-reduced compression functions. We consider two step-reduced variants of the compression function. First one uses the same feedforward1 as the original algorithm, and the other one has the feedforward1 working at the output of the half steps. Our attack finds a prei...

We investigated whether δ-opioid receptor (DOR)-induced neuroprotection involves the brain-derived neurotrophic factor (BDNF) pathway. We studied the effect of DOR activation on the expression of BDNF and other proteins in the cortex of C57BL/6 mice exposed to hypoxia (10% of oxygen) for 1-10 days. The results showed that: (1) 1-day hypoxia had no appreciable effect on BDNF expression, while 3-...

ObjectivesThere is scarce information about sedation in nursing homes at the end of life. We aimed to assess (1) use sedatives generally and “sedatives with continuous effect,” based on objective operational criteria, within last week life (2) factors associated this treatment.DesignRetrospective cohort study, using homes' medical records.Setting ParticipantsResidents who died 4 German from Jan...

In 2012, NIST standardized SHA-512/224 and SHA-512/256, two truncated variants of SHA-512, in FIPS 180-4. These two hash functions are faster than SHA-224 and SHA-256 on 64-bit platforms, while maintaining the same hash size and claimed security level. So far, no third-party analysis of SHA-512/224 or SHA-512/256 has been published. In this work, we examine the collision resistance of step-redu...

Corresponding Author 5 6 Daniel Johnston, Ph.D. 7 Center for Learning and Memory 8 The University of Texas at Austin 9 1, University Station Stop, C7000 10 Austin, TX 78712-0805, USA. 11 12 e-mail: [email protected] 13 Phone: 512-232-6564 14 Fax: 512-475-8000 15 16 17 † Present Address: 18 19 Rishikesh Narayanan, Ph.D. 20 Molecular Biophysics Unit 21 Indian Institute of Science 22 B...

Title: 1 Uniform spatial spread of population activity in primate parafoveal V1 2 3 Authors: 4 Chris R. Palmer, Yuzhi Chen, and Eyal Seidemann 5 Dept. of Psychology and Center for Perceptual Systems, University of Texas at Austin 6 Austin, TX 78712, USA 7 8 1 These authors contributed equally to this work 9 10 Running Head: 11 Uniform spread of V1 population activity 12 13 Corresponding author:...