User profiles for Keitaro Hashimoto

Keitaro Hashimoto

National Institute of Advanced Industrial Science and Technology
Verified email at aist.go.jp
Cited by 88

An efficient and generic construction for signal's handshake (X3DH): post-quantum, state leakage secure, and deniable

K Hashimoto, S Katsumata, K Kwiatkowski, T Prest - Journal of Cryptology, 2022 - Springer
The Signal protocol is a secure instant messaging protocol that underlies the security of
numerous applications such as WhatsApp, Skype, Facebook Messenger among many others. …

Pharmacology of KB‐R7943: A Na+–Ca2+ exchange inhibitor

…, N Homma, K Hashimoto - Cardiovascular drug …, 2003 - Wiley Online Library
The Na + –Ca 2+ exchange (NCX) system plays a pivotal role in regulating intracellular Ca 2+
concentration in cardiomyocytes, neuronal cells, kidney and a variety of other cells. It …

Electrophysiologic, cardiohemodynamic and β-blocking actions of a new ultra-short-acting β-blocker, ONO-1101, assessed by the in vivo canine model in comparison …

…, A Takahara, K Hashimoto - Journal of cardiovascular …, 1999 - journals.lww.com
The purpose of this study was to assess the cardiovascular effects of an ultra-short-acting β-blocker,
ONO-1101, by using halothane-anesthetized beagle dogs in comparison with …

Effects of sodium-calcium exchange inhibitors, KB-R7943 and SEA0400, on aconitine-induced arrhythmias in guinea pigs in vivo, in vitro, and in computer simulation …

MS Amran, K Hashimoto, N Homma - Journal of Pharmacology and …, 2004 - ASPET
The sodium-calcium exchange (NCX) plays a pivotal role in regulating contractility and electrical
activity in the heart. However, the effects of NCX blockers on ventricular arrhythmias are …

Distribution and developmental change of vasopressin V1A and V2 receptor mRNA in rats

A Hirasawa, K Hashimoto, G Tsujimoto - European Journal of …, 1994 - Elsevier
With the reverse transcription-polymerase chain reaction (RT-PCR) method, we examined
the tissue distribution of vasopressin V 1A and V 2 receptor transcripts in newborn and adult …

A concrete treatment of efficient continuous group key agreement via multi-recipient PKEs

K Hashimoto, S Katsumata, E Postlethwaite… - Proceedings of the …, 2021 - dl.acm.org
Continuous group key agreements (CGKAs) are a class of protocols that can provide strong
security guarantees to secure group messaging protocols such as Signal and MLS. …

Sphingosine 1-phosphate induces sinus tachycardia and coronary vasoconstriction in the canine heart

…, Y Yatomi, Y Ozaki, K Hashimoto - Cardiovascular …, 2000 - academic.oup.com
Objective: Sphingosine 1-phosphate is a naturally occurring biologically active lysophospholipid.
Recent studies suggested that sphingosine 1-phosphate is released into the blood flow …

Pravastatin prevents arrhythmias induced by coronary artery ischemia/reperfusion in anesthetized normocholesterolemic rats

…, K Harada, A Fujimura, K Hashimoto - Journal of …, 2003 - jstage.jst.go.jp
HMG-CoA reductase inhibitors (statins) have been shown to decrease cardiovascular
mortality. Since ventricular tachyarrhythmias are closely related to cardiovascular mortality, we …

Cardiac effects of Salvia miltiorrhiza/Dalbergia odorifera mixture, an intravenously applicable Chinese medicine widely used for patients with ischemic heart disease …

…, BM Zhu, A Takahara, Y Satoh, K Hashimoto - Circulation …, 2002 - jstage.jst.go.jp
Methods All experiments were performed in accordance with the rules and regulations of
the Committee for Research of the Yamanashi Medical University. Animals were obtained …

Unrestricted and compact certificateless aggregate signature scheme

K Hashimoto, W Ogata - Information Sciences, 2019 - Elsevier
A certificateless aggregate signature (CLAS) scheme employing a reduced signature size
eliminates the complexity of certificate management in a traditional public key cryptosystem. A …